HP StorageWorks XP24000/XP20000 Continuous Access Journal Software User Guide Abstract This guide explains how to use HP StorageWorks XP Continuous Access Journal Software to replicate data between local and remote HP StorageWorks XP disk arrays and to achieve disaster tolerance with maximum application performance. Topics include setting up remote copy connections, configuring the storage system, creating and monitoring remote copies, recovering from a disaster, and troubleshooting.
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Contents 1 Overview of HP StorageWorks XP Continuous Access Journal Software..............8 XP Continuous Access Journal....................................................................................................8 Features..................................................................................................................................9 Benefits...................................................................................................................................
Suspend Types...................................................................................................................40 Suspension Condition.........................................................................................................41 3 Preparing for XP Continuous Access Journal Operations................................43 Requirements and Restrictions...................................................................................................43 System Requirements............
Hardware Configuration................................................................................................87 Setup Procedure............................................................................................................88 Requirements for Creating an XP Continuous Access Journal Pair for the Delta Resync Operation....................................................................................................................
5 Configuring Storage Systems and Logical Paths..........................................143 Reviewing System Configuration Tasks.....................................................................................143 Configuring Port Attributes.....................................................................................................144 Configuring Storage System Options.......................................................................................
8 Usage Monitor Operations......................................................................199 Reviewing the Usage Monitor Window....................................................................................199 Starting and Stopping Usage Monitoring.................................................................................199 Displaying the Usage Monitor Graph......................................................................................199 Saving Monitoring Data in Text Files.......
1 Overview of HP StorageWorks XP Continuous Access Journal Software This chapter provides an overview of HP StorageWorks XP Continuous Access Journal Software and describes its features and benefits.
Features XP Continuous Access Journal provides the following key features: • • Heterogeneous Storage System Support ◦ Used with the storage system, XP Continuous Access Journal software enables storage management and disaster recovery in heterogeneous systems, providing maximum flexibility and support of enterprise-class environments.
• • ◦ Reduces overhead and application impact at the production site by placing more of the workload on the remote site ◦ Centralizes operations for management resources and provides secure management of data-related operational risk Improve Operational Efficiency and Resiliency ◦ Simplifies consolidation/aggregation and mapping of data value to the cost of storage ◦ Supports planned site outages ◦ Keeps logging changes in the event of network problems between sites ◦ Reduces costs—requires onl
2 About XP Continuous Access Journal Operations This chapter describes how XP Continuous Access Journal provides a storage-based, XP hardware solution for disaster recovery that enables fast and accurate system recovery.
Figure 1 XP Continuous Access Journal Operations for a Fibre Channel Connection Journal Obtain Journal obtain is the function that stores data from the primary data volume as a base-journal in the primary site journal volume. The journal obtain function, with every update of the primary data volume according to the write instruction from the host, then stores the write data as journal data in the journal volume.
data volume according to the write sequence number. This will ensure write sequence consistency between the primary and secondary data volumes. After the journal data is restored to the secondary data volume, the journal data is discarded at the secondary site.
Figure 3 Configuration for Multiple Secondary Storage Systems Storage Systems XP Continuous Access Journal operations involve the storage systems at the primary and secondary sites. The primary storage system consists of the main control unit (primary storage system) and SVP. The secondary storage system consists of the remote control unit (secondary storage system) and SVP.
system). This virtual storage system is called a logical DKC or an LDKC (logical disk controller). There is one LDKC in the storage system, and number 00 is assigned to the LDKC. Each LDKC controls 255 CUs. However, the number of CUs that can be used for storage system program products is up to 255. Therefore, the maximum number of volumes that can be used for storage system program products is 65,280 volumes for an LDKC.
The specifications for consistency group numbers are different from the specifications for journal group numbers. One storage system has a total of 256 (0 to 255) consistency groups for the primary and secondary data volumes (numbers 0 to 255) are assigned). Note: The consistency group number of the primary and secondary data volumes to be paired must be same.
The XP Continuous Access Journal remote copy configuration between the primary storage system and secondary storage system has the following requirement (see “Setting up Remote Copy Connections” (page 52)): • XP Continuous Access Journal supports a 1-to-1 remote copy connection in one journal group pair. In one journal group pair, one primary storage system can be connected to only one secondary storage system.
Caution: Data volumes and journal volumes that belong to different LDKCs cannot coexist in a journal group. For detailed information about the specification of journal groups, see “Journal Group Specifications” (page 49). Data Volume Pairs XP Continuous Access Journal performs remote copy operations for data volume pairs created by the user. Each XP Continuous Access Journal pair consists of one primary data volume and one secondary data volume, which can be located in different storage systems.
Table 2 Emulation Types for Journal Volumes Emulation Category Supported Emulation Types DKU (drive) OPEN-V Note: You can only use OPEN-V volumes for journal volumes. • Volumes and their capacity: You can use CVS volumes for journal volumes. Journal volumes in the same journal group can have different capacities. A master journal volume and the corresponding restore journal volume can have different capacities.
Adding journal volumes during a remote copy operation may not change the journal data usage rate until the journal volumes are used. To check the journal data usage rate, use the Usage Monitor window (see “Usage Monitor Operations” (page 199)).
XP Continuous Access Journal Remote Copy Operations This section describes the remote copy operations using XP Continuous Access Journal. Figure 5 (page 21) illustrates the two types of XP Continuous Access Journal remote copy operations: initial copy and update copy. Figure 5 Remote Copy Operations This section describes the following topics that are related to remote copy operations with XP Continuous Access Journal.
The base-journal data is stored in the entire data volume or the area for the difference. The journal data for the entire data volume is created when the data volume pair is created. The difference journal data is obtained when the pair status of the data volume changes from the Suspending status to the Pair resync status. Merging the difference bitmaps that are recorded on both primary and secondary data volumes enables you to obtain the journal data for only the difference.
is written to the primary data volume is obtained as an update journal. The update journal is copied to the secondary storage system, and then restored to the secondary data volume. The primary storage system obtains the update data that the host writes to the primary data volume as update journals. • Update journals are stored in journal volumes in the journal group of the primary data volume.
read fails, the redundancy provided by the RAID1 or RAID5 technology recovers the failure. The primary storage system does not read the XP Continuous Access Journal secondary data volume for a recovery. Write and Update Copy / Write Failure When a primary storage system receives a write I/O for a primary data volume with PAIR status, the operation is executed at the primary storage system.
Difference Management The differential data (updated by write I/Os during a split or suspension) between the primary data volume and the secondary data volume is stored in each track bitmap. When a split/suspended pair is resumed (pairresync), the primary storage system merges the primary data volume and secondary data volume bitmaps, and the differential data is copied to the secondary data volume.
secondary data volume in the same order as the primary data volume, according to the sequence number information in the journal. Note: XP Continuous Access Journal processing continues uninterrupted if the SVP reboots or even if the SVP fails. Types of Journals In addition to the journal data for updating, the primary storage system sends control information to the secondary storage system.
When journal data S2 arrives, the secondary storage system selects S2 as the next journal data to be settled. The journal data selected by the secondary storage system is marked as host-dirty and treated as formal data.
by the delta resync operation; you need not wait long before you can again access the XP Continuous Access Journal data volumes. A delta resync operation consists of two processes: preparation before the failure occurs (see “Journal Obtain at XP Continuous Access Synchronous Secondary Site” (page 28)) and the recovery after a failure has occurred (see “Switching the Master Journal Group of XP Continuous Access Journal” (page 30)).
Figure 7 Delta Resync Setting 3DC Multi-Target Configuration - Before Failure Occurs As shown in Figure 7 (page 29), an XP Continuous Access Journal pair created with the delta resync operation is defined as a pair (HOLD status) but an actual copy operation is not performed until the failure occurs and the delta resync operation is performed. There are several requirements to create an XP Continuous Access Journal pair for the delta resync operation, such as specifying the unused mirror ID.
obtained in the XP Continuous Access Synchronous secondary site because of the failure in the master journal volume or occurrence of the pinned track. If the status of the XP Continuous Access Journal pair for the delta resync operation changes to HLDE, follow the steps in “Restoring a Pair of Data Volumes (Pairresync)” (page 192) and change the pair status to HOLD again.
Figure 8 Delta Resync Setting 3DC Multi-Target Configuration - After Failure Occurs For the latest information on the availability of the delta resync function, contact HP technical support. As illustrated in Figure 8 (page 31), after a failure occurs in primary site A, the horctakeover command is used to reconfigure the former XP Continuous Access Synchronous secondary site as the primary site B.
In the delta resync operation, the status of the XP Continuous Access Journal pair changes to PAIR (not COPY). This is because the delta resync operation uses journal copy to copy only the missing journal data instead of copying all the data in the primary volume. Therefore, the delta resync operation requires less time to recover the XP Continuous Access Journal pair after a failure occurs.
You can view the detailed pair status information at the Remote Web Console computer (XP Continuous Access Journal Detailed Information window) or at the UNIX/Computer server host (RAID Manager Pairdisplay command). Table 4 (page 33) shows the relationships.
When an XP Continuous Access Journal data volume pair is split or suspended, the primary storage system generates a service information message (SIM) to notify the host(s). If SNMP is installed and operational for the storage system, this SIM results in an SNMP trap that indicates the reason for suspension.
Table 5 XP Continuous Access Journal Data Volume Pair Status (continued) Pair Status Description PAIR This data volume pair is synchronized. Updates Read / Write to the primary data volume are duplicated on the secondary data volume. *3 Read Only This data volume pair is not synchronized, Read / Write because the user has split this pair (pairsplit-r) (pair suspended-split) or because the user has released this pair from (see “XP Continuous the secondary storage system (pairsplit-S).
Table 5 XP Continuous Access Journal Data Volume Pair Status (continued) Pair Status Description Primary Data Volume Access PSUE This data volume pair is not synchronized Read/write; because the primary storage system or Read only if (pair secondary storage system has suspended the fenced*3 suspended-error) pair due to an error condition.
Table 5 XP Continuous Access Journal Data Volume Pair Status (continued) Pair Status Description Primary Data Volume Access Suspending This pair is not synchronized. This pair is in Read / Write transition from PAIR or COPY to PSUS/PSUE. When the split/suspend pair operation is requested, the status of all affected pairs changes to Suspending. When the split/suspend operation is complete, the status changes to PSUS/PSUE. *3 Read Only Deleting (releasing) This pair is not synchronized.
whose status is not HOLD. If the 3DC configuration of three XP Continuous Access Journal sites, the host cannot write data regardless of the status of the mirror whose status is not HOLD. *3: Remember that the host cannot write data to the XP Continuous Access Journal primary data volume that belongs to the journal group that was registered when the system option mode 707 is set to ON.
Tracking Journal Data: The primary storage system and secondary storage system keep track of any journal data that was discarded during the pairsplit operation.
Table 7 Consistency Status for Split/Suspended XP Continuous Access Journal Secondary Data Volumes Consistency Status (shown at secondary storage system) Description Volume This XP Continuous Access Journal data volume pair was split or suspended alone. Update sequence consistency between this secondary data volume and other secondary data volumes in this journal group is not ensured. This secondary data volume cannot be used for disaster recovery at the secondary site.
When the suspended XP Continuous Access Journal pair is resumed (pairresync), the primary and secondary storage systems perform the following operations: • The secondary storage system sends the secondary data volume bitmap to the primary storage system. • The primary storage system merges the primary data volume and secondary data volume bitmaps to determine which cylinders/tracks are out-of-sync.
• The journal data that reached the secondary storage system, but has not yet been restored. After marking these primary data volume tracks as modified, the primary storage system discards this journal data. Therefore, the secondary storage system can check and mark the journal data that has not been restored. The primary storage system does not discard journal data from the master journal volume until the primary storage system receives the sequence numbers of the restored journal volumes.
3 Preparing for XP Continuous Access Journal Operations This chapter describes the prerequisites and preparations to make to begin operations: • “Requirements and Restrictions” (page 43) • “Installing the Hardware” (page 51) • “Configuring the Primary and Secondary Storage Systems for XP Continuous Access Journal Operations” (page 54) • “Using Multiple Primary and Secondary Storage Systems” (page 55) • “Enabling the XP Continuous Access Journal Option” (page 71) • “Interoperability with Other Pro
• • Remote copy connections−Fibre Channel (see “Setting up Remote Copy Connections” (page 52)): ◦ Multimode or single-mode optical fibre cables are required at both the primary storage system and secondary storage system. ◦ For distances up to 0.5 km, multimode optical short-wave fiber cables are required between the primary storage system and secondary storage system. ◦ For distances from 0.5 km to 1.
usual for 30 days. After 30 days, you can only split or release the XP Continuous Access Journal pairs. • Connection with an XP12000/XP10000 Disk Array XP Continuous Access Journal can execute remote copy operations by connecting an XP24000/XP20000 Disk Array with an XP12000/XP10000 Disk Array.
Table 11 Supported Data Volumes and Journal Volumes Type Support Specifications Data Volume CVS volume Journal Volume Available The volume that is set for Cache Available Residency Manager Unavailable Maximum volume capacity The maximum capacity of a volume for each emulation type Minimum volume capacity The minimum capacity for a CVS volume The minimum capacity for a CVS volume.
Table 14 RAID Level Configuration of XP Continuous Access Journal Item Support Specifications RAID configuration of the data volume and journal volume RAID1, RAID5, and RAID6 can coexist. RAID1, RAID5, and RAID6 can coexist in the same journal group. Maximum Number of Pairs The number of pairs that can be created in a storage system is limited. Use the number of cylinders and bitmap areas to calculate the maximum number of pairs that can be created in a storage system.
Table 15 Relationship Between Additional Shared Memory and Total Number of Bitmap Areas in the Storage System Additional Shared Memory for XP Continuous Access Journal Total Number of Bitmap Areas in the Storage System No additional shared memory for XP Continuous Access Journal 0 Additional shared memory for XP Continuous Access Journal is installed 7,424 Extension 1 16,384 Extension 2 32,768 Extension 3 (available only for XP24000 Disk Array) 44,256 Extension 4 (available only for XP24000 Disk A
Table 16 Journal Group Specifications Item Support Specifications Number of journal groups Up to 256 journal groups (Number 0 to 255) per storage system The recommended number of journal groups is up to 16. Number of data volumes in a journal group Up to 8,192 In the 3DC configuration which consists of three Continuous Access Journal sites, up to 16,384.
Table 17 Volume Specifications in a Journal Group Item Support Specifications Emulation type Same or different emulation types are available. Note: Only OPEN-V can be used for journal volumes. Volume capacity Same or different amount of capacity is available. CLPR Journal volumes and data volumes in the same journal group can belong to different CLPRs. Journal volumes must belong to the same CLPR.
Duplicate Volumes Since the contents of the primary data volume and secondary data volume of an XP Continuous Access Journal pair are identical, the secondary data volume can be considered a duplicate of the primary data volume. Since the host operating system does not allow duplicate volumes, the host system administrator must take precautions to prevent system problems related to duplicate volumes.
6. Network Relay Devices” (page 155) for further information on powering off/on the primary storage systems and secondary storage systems. HP Service Representative: Install the XP Continuous Access Journal remote copy connections between the primary storage system(s) and secondary storage system(s). This hardware (optical fibre cables, switches, and so on) is supplied by the user. See “Setting up Remote Copy Connections” (page 52) for remote copy configurations.
The remote copy connection between the primary and secondary storage systems can be configured in three ways: • Direct connection (see Figure 10 (page 53)) • Switch connection (see Figure 11 (page 53)) • Extender connection (see Figure 12 (page 53)) Figure 10 Direct Remote Copy Connections * To set ports, use LUN Manager and set the port topology to Fabric off, FC-AL.
Configuring the Primary and Secondary Storage Systems for XP Continuous Access Journal Operations After you have installed the XP Continuous Access Journal hardware and software, you can configure the primary storage systems and secondary storage systems for XP Continuous Access Journal operations. To configure the primary storage systems and secondary storage systems for XP Continuous Access Journal operations: 1. 2. 3.
11. Restart Performance Monitor, when necessary. On a primary storage system and a secondary storage system, you will start Performance Monitor. 12. Repeat steps 3 through 9 for each storage system that will function as an XP Continuous Access Journal primary storage system.
Figure 14 Example 1: When the Consistency Group Contains Multiple Journal Groups Figure 15 Example 2: When the Consistency Group Contains Multiple Journal Groups 56 Preparing for XP Continuous Access Journal Operations
Figure 16 Example 3: When the Consistency Group Contains Multiple Journal Groups Basic Behavior When Using Multiple Primary and Secondary Storage Systems This section explains the basic behavior of XP Continuous Access Journal under the following conditions: • There are two primary storage systems and two secondary storage systems. • Two storage systems are defined in the RAID Manager configuration definition file. • All XP Continuous Access Journal pairs are in PAIR status.
4. 5. 6. 7. 8. 9. this point, two kinds of information, the time stamp information issued from RAID Manager and the sequence number indicating the write order, are added to the journal data. The journal copy function allows XP Continuous Access Journal to copy the journal data in the primary journal volume to the paired restore journal volume. Journal copying is performed asynchronously with journal obtaining.
If the above-mentioned conditions are all fulfilled, and when an error occurs to one of the journal groups, the error will be communicated to other journal groups. If you use RAID Manager, and if a journal group is in the normal status, it will be shown as PJNN. When an error occurs, the status of the journal group changes from normal to PJSE. In case of the capacity overflowing, the status changes to PJSF.
Figure 18 Flow of Transferring the Business Tasks from the Remote to Primary Site When the System Consists of Multiple Primary and Secondary Storage Systems 3DC Multi-target Configuration of Three XP Continuous Access Journal Sites You can set the system option mode 767 in the XP24000/XP20000 disk arrays. If you set the system option mode 767 to ON in each of the three sites and then register new journal groups, you can define a multi-target configuration combining three sites.
there is one primary site and two secondary sites. If secondary data volumes in two XP Continuous Access Journal secondary sites are combined, you can create a XP Continuous Access Journal pair for delta resync operation. If you create a XP Continuous Access Journal pair for delta resync operation, you can restart your business tasks by duplicating volumes in a short time without a long disaster recovery operation that copies all volumes in the site.
6. 7. 8. Create an XP Continuous Access Journal pair of the second mirror in the primary site. Specify the primary journal group and the primary data volume used for the first mirror as the primary journal group and the primary data volume of the XP Continuous Access Journal pair. Select any mirror ID from 0 to 3 except the one used in Step 4. Wait until the status of the XP Continuous Access Journal pair becomes PAIR.
• When the primary data volume of the XP Continuous Access Journal pair of the first mirror is in COPY status, the pair of the second mirror cannot be created. • When multiple mirrors are registered in the journal group, if the primary data volume of the pair of one mirror is in COPY status, the pair of another mirror cannot be resynchronized.
requirements. In the following cases, delta resync operation will not be performed because the necessary journal data does not exist when: ◦ After splitting the XP Continuous Access Journal pair, the secondary data volume of the XP Continuous Access Journal pair associated with the secondary data volume of the XP Continuous Access Journal pair for delta resync operation is updated.
4. 5. 6. Execute the delta resync command (pairresync –swaps) on the XP Continuous Access Journal pair for delta resync operation in the primary site. The storage system reverses the primary and the secondary data volumes to restore and resynchronize the pair. Confirm the execution result of the delta resync command (pairresync –swaps). The XP Continuous Access Journal pair for delta resync becomes the XP Continuous Access Journal primary data volume.
• An XP Continuous Access Journal primary site (Primary site whose mirror ID is an arbitrary number M) • An XP Continuous Access Journal intermediate site (Secondary site whose mirror ID is an arbitrary number M, and primary site whose mirror ID is an arbitrary number N) • An XP Continuous Access Journal secondary site (Secondary site whose mirror ID is an arbitrary number N) Figure 21 Cascading Configuration Combining Three XP Continuous Access Journal Sites The data in the primary data volume is wr
8. Create an XP Continuous Access Journal pair for delta resync operation by using the data volumes in the primary and the secondary sites. Create an XP Continuous Access Journal pair for delta resync operation as follows: • Specify the primary data volume in the primary site of the first mirror as the primary data volume. • Specify the secondary data volume in the secondary site of the second mirror as the secondary data volume.
NOTE: In the journal group, even if the specified pair satisfies requirements, an error may occur when any XP Continuous Access Journal pair does not satisfy the requirements. • Status of the primary data volume is HOLD. • The XP Continuous Access Journal pair for delta resync operation uses a volume of one mirror in the journal group as the primary data volume. ◦ If you use the primary volume of one mirror in the journal group, the pair status should be PAIR.
• The primary data volume in the XP Continuous Access Journal pair for delta resync operation is updated and then the capacity of the journal data exceeds 70% of the journal volume in the primary site of a XP Continuous Access Journal pair for delta resync operation. • After creating the XP Continuous Access Journal pair for delta resync operation, no volumes (including volumes after failover or failback) in the primary site are updated.
Figure 22 Configuration when Transferring Business Tasks from the XP Continuous Access Journal Intermediate Site to the Primary Site Restoring the XP Continuous Access Journal Intermediate site and the Cascading Configuration If you remove failures from the intermediate site, you can transfer your business tasks back to the primary site using RAID Manager and the following procedure: 1. 2. 3. 4.
Figure 23 Configuration when Restoring the XP Continuous Access Journal Intermediate Site and the Cascading Configuration Enabling the XP Continuous Access Journal Option To operate the XP Continuous Access Journal software, a computer for Remote Web Console is required. For further information on Remote Web Console operations, see the HP StorageWorks XP24000/XP20000 Remote Web Console User Guide or contact your HP service representative.
Table 19 Whether Non-XP Continuous Access Journal Volumes Can Be Used as XP Continuous Access Journal Volumes Functions and Volumes Can the Volumes Be Used as Primary Data Volumes? Can the Volumes Be Used as Secondary Data Volumes? Can the Volumes Be Used as Journal Volumes? Yes Yes No P-VOL in PSUS status Yes Yes No P-VOL in COPY(RS-R) status No No No P-VOL that is also used as an XP Continuous Access P-VOL or XP Continuous Access S-VOL Yes Yes No P-VOL (none of the above) Yes Yes No
Table 19 Whether Non-XP Continuous Access Journal Volumes Can Be Used as XP Continuous Access Journal Volumes (continued) Functions and Volumes Can the Volumes Be Used as Primary Data Volumes? Can the Volumes Be Used as Secondary Data Volumes? Can the Volumes Be Used as Journal Volumes? V-VOL No No No Pool-VOL No No No Yes3 Yes3 No Yes Yes No No No No P-VOL in COPY status No No No P-VOL in PAIR status Yes4 No No P-VOL in PSUS status Yes4 No2 No P-VOL in PSUE status Yes4 No
Table 19 Whether Non-XP Continuous Access Journal Volumes Can Be Used as XP Continuous Access Journal Volumes (continued) Functions and Volumes Can the Volumes Be Used as Primary Data Volumes? Can the Volumes Be Used as Secondary Data Volumes? Can the Volumes Be Used as Journal Volumes? Yes4 No No No No No Volume with the Read/Write attribute Yes Yes Yes Volume with the Protect attribute Yes Yes No Volume with the Read Only attribute Yes Yes No Volume that is disabled for use as an S-V
Table 19 Whether Non-XP Continuous Access Journal Volumes Can Be Used as XP Continuous Access Journal Volumes (continued) Functions and Volumes Can the Volumes Be Used as Primary Data Volumes? Can the Volumes Be Used as Secondary Data Volumes? Can the Volumes Be Used as Journal Volumes? Yes Yes Yes Volume to which a path is defined Yes Yes No Volume to which no path is defined No No No Volume to which LUN security is applied Yes Yes No Yes Yes No Virtual LUN volume LUN Manager XP Thin
Journal primary data volume or secondary data volume, you must delete the pair first to return the volume to SMPL status. When creating an XP Continuous Access Journal pair consisting of two Virtual LUN volumes, make sure that the primary data volume and secondary data volumes have the same capacity. Cache Residency Manager You can perform Cache Residency Manager operations on XP Continuous Access Journal primary data volumes and secondary data volumes.
Table 20 (page 77) describes the host pair status reporting for XP Continuous Access Journal volumes, XP Business Copy volumes, and XP Continuous Access Journal/XP Business Copy shared volumes. Table 21 (page 77) shows the currency of the data on a shared XP Continuous Access Journal/XP Business Copy volume based on the XP Continuous Access Journal and XP Business Copy pair status.
Figure 24 Shared XP Continuous Access Journal Primary Data Volume and XP Business Copy P-VOL • XP Continuous Access Journal/XP Business Copy configurations that share the XP Continuous Access Journal secondary data volume and XP Business Copy P-VOL Figure 25 (page 78) shows an example of an XP Continuous Access Journal secondary data volume that is also functioning as an XP Business Copy P-VOL.
Figure 26 Shared XP Continuous Access Journal Primary Data Volume and XP Business Copy P-VOL, and XP Continuous Access Journal Secondary Data Volume and XP Business Copy P-VOL • XP Continuous Access Journal/XP Business Copy configuration where an XP Business Copy S-VOL in PSUS status is used as an XP Continuous Access Journal primary data volume In the following example, an XP Business Copy S-VOL in PSUS status is also functioning as an XP Continuous Access Journal primary data volume.
8. 9. Execute the RAID Manager pairsplit -r command on the XP Business Copy pair to put the pair in PSUS status (see Figure 35 (page 81)). Execute the RAID Manager paircreate command on the XP Continuous Access Journal pair to recreate the pair (see Figure 36 (page 82)).
Figure 32 Restoring an XP Business Copy P-VOL - Step 5 Figure 33 Restoring an XP Business Copy P-VOL - Step 6 Figure 34 Restoring an XP Business Copy P-VOL - Step 7 Figure 35 Restoring an XP Business Copy P-VOL - Step 8 Interoperability with Other Products and Functions 81
Figure 36 Restoring an XP Business Copy P-VOL - Step 9 XP Continuous Access Synchronous (3DC Cascading Configuration) The XP24000/20000 Disk Array provides a function to combine XP Continuous Access Journal and XP Continuous Access Synchronous. This combination is intended to ensure that the response time against host I/Os is comparable, regardless of whether the distance between the primary and the secondary sites are short or long.
Note that the 3DC cascading configuration of XP Continuous Access Journal and XP Continuous Access Synchronous is not available in the system that consists of multiple primary and secondary storage systems. The response time for host I/Os will roughly be the sum of the response time for XP Continuous Access Synchronous operation and the creation time of journal data in an intermediate site.
Figure 38 Basic Behavior in a 3DC Cascading Configuration Use differential copy, in a 3DC cascading configuration, to resynchronize either a suspended XP Continuous Access Synchronous or a suspended XP Continuous Access Journal pair. To perform disaster recovery from a failure at the primary site in a 3DC cascading configuration, you must ensure that the fence level of the XP Continuous Access Synchronous P-VOL is Data.
1. 2. 3. 4. Install XP Continuous Access Synchronous and XP Continuous Access Journal. Configure the ports and journal groups. Issue a request for creating an XP Continuous Access Synchronous pair to the primary storage system where XP Continuous Access Synchronous is installed. Wait until the status of the XP Continuous Access Synchronous pair becomes PAIR. Issue a request for creating an XP Continuous Access Journal pair to the XP Continuous Access Journal primary storage system.
Figure 39 3DC Multi-Target Configuration (Combining XP Continuous Access Journal with XP Continuous Access Synchronous) In this configuration, the primary volume at the primary site is paired with the secondary volume for XP Continuous Access Synchronous. This primary volume is also paired with the secondary volume for XP Continuous Access Journal.
Multi-Target Configuration” (page 212) and “Changing to a 3DC Multi-Target Configuration After Recovering from Primary Site Failures” (page 93). If a failure occurs in both the primary volume and the XP Continuous Access Synchronous secondary volume, you can resume your business tasks by using the XP Continuous Access Journal secondary data volume.
Access Journal pair for the delta resync operation. For details, see “Recovering from Primary Site Disaster in a 3DC Multi-Target Configuration” (page 212). ◦ • To use the delta resync function that uses remote command devices, a remote command device must be created on the XP Continuous Access Synchronous primary site and the XP Continuous Access Journal secondary site. For details about creating a remote command device, see the HP StorageWorks XP24000/XP20000 External Storage Software User Guide.
8. 9. Assign the remote command device to the mirror ID of the XP Continuous Access Journal pair for the delta resync operation on the XP Continuous Access Synchronous secondary site. Additionally, assign remote command device to the mirror ID 00. Assign the remote command device to the mirror ID of the XP Continuous Access Journal pair on the XP Continuous Access Journal secondary site.
• Status of the primary data volume is HOLD. • Using the volume of XP Continuous Access Synchronous pair as the primary data volume: ◦ If you use XP Continuous Access Synchronous P-VOL, the pair status should be PAIR. ◦ If you use XP Continuous Access Synchronous S-VOL, the pair status should be SSWS.
• When the secondary data volume is updated after splitting the XP Continuous Access Journal pair. • When, after splitting the XP Continuous Access Journal pair and as a result of the update of the primary data volume, the capacity of the journal data exceeds 80% of the journal volume in the XP Continuous Access Synchronous secondary site.
Figure 40 Configuration of the Delta Resync Operation that utilizes Remote Command Devices To create above configuration, perform following operations: 1. Configure paths between external ports and target ports. For details about external ports, see the HP StorageWorks XP24000/XP20000 External Storage Software User's Guide. For instructions on setting paths, see theHP StorageWorks XP24000/XP20000 LUN Manager User Guide. 2. Create command devices in all sites.
If the Continuous Access Synchronous pair, the Continuous Access Journal pair, and the Continuous Access Journal pair for delta resync operation are all deleted when the remote command device cannot be communicated because of a failure or a disaster, the assigned remote command devices to mirrors cannot be released automatically.
Figure 42 Transferring Business Tasks from the XP Continuous Access Secondary Site to the Primary Site (in a 3DC Cascading Configuration) Transferring Business Tasks from the XP Continuous Access Secondary Site to the Primary Site (in a 3DC Multi-target Configuration) If you remove failures from the primary site and other locations, and then the system is changed to a 3DC multi-target configuration (see “Recovering from Primary Site Disaster in a 3DC Multi-Target Configuration” (page 212) and “Changing to
Figure 43 Transferring Business Tasks from the XP Continuous Access Secondary Site to the Primary Site (in a 3DC Multi-target Configuration) Transferring Business Tasks from XP Continuous Access Secondary Site to Primary Site (When Delta Resync Operation is Performed in 3DC Multi-target Configuration) To transfer your business tasks back to the primary site, follow the described in this section. RAID Manager is used in this procedure: 1.
Table 22 XP Continuous Access Journal Pair Status Changes by Delta Resync Operation XP Pair Status before Delta Resync Operation Pair Status after Delta Resync Operation Continuous Secondary Data Primary Data Volume Secondary Data Access Primary Data Volume Volume Journal Volume Pair XP HOLD Continuous Access Journal pair between XP Continuous Access Synchronous primary site and XP Continuous Access Journal secondary site HOLD PAIR or COPY PAIR or COPY XP PAIR, PSUS, or Continuous PSUE Access Journal pa
Table 23 Pair Status and Operation after Recovery of the Primary Site Invalid Pair Status Perform This Operation before Transferring Business Tasks Back to the Primary Site 1. Make sure that the status of the pair in the primary site is PSUE or PSUS. XP Continuous Access Journal secondary site: HOLD 2. Release the XP Continuous Access Journal pair from the primary site. 3. Make sure that all the pairs belonging to the journal group in the primary site are released. 4.
Figure 44 Transferring Business Tasks from the XP Continuous Access Secondary Site to the Primary Site (When Delta Resync Operation Is Performed in 3DC Multi-Target Configuration) For the latest information on the availability of the delta resync function, contact HP technical support.
Figure 45 Recovering from Failures at the Primary Site and the XP Continuous Access Synchronous Secondary Site Transferring Business Tasks from the XP Continuous Access Journal Secondary Site to the Primary Site If you follow the instructions in “Recovering from Failures at the Primary Site and the XP Continuous Access Synchronous Secondary Site” (page 98), and then remove failures from the primary site and the XP Continuous Access Synchronous secondary site, you can transfer your business tasks back to th
Figure 46 Transferring Business Tasks from the XP Continuous Access Journal Secondary Site to the Primary Site XP Continuous Access Synchronous (2DC Configuration) Using XP Continuous Access Journal in combination with XP Continuous Access Synchronous, you can set the system option mode 707 of the XP24000/XP20000 Disk Array in the intermediate site.
Figure 47 2DC Configuration of XP Continuous Access Journal and XP Continuous Access Synchronous In the 2DC configuration shown above, the I/O data on the XP Continuous Access Synchronous P-VOL is first copied to the XP Continuous Access Journal master journal volume, which is located in the intermediate site in short distance. This copying processing is done by XP Continuous Access Synchronous.
Figure 48 Basic Behavior (2DC Configuration of XP Continuous Access Journal and XP Continuous Access Synchronous) The I/O data from the primary site host is stored in the XP Continuous Access Synchronous P-VOL. If the system option mode 707 is set in the intermediate site, the P-VOL data will not be stored in the XP Continuous Access Synchronous S-VOL (XP Continuous Access Journal primary data volume) in the intermediate site.
The XP24000/XP20000 Disk Array needs the following conditions in these sites: • • Primary site ◦ XP Continuous Access Synchronous program product ◦ XP Continuous Access Synchronous P-VOL Intermediate site ◦ • The following program products must be installed: – XP Continuous Access Journal – XP Continuous Access Synchronous – XP Thin Provisioning ◦ A volume used as both an XP Continuous Access Synchronous S-VOL and an XP Continuous Access Journal primary data volume ◦ an XP Continuous Access
Restrictions About 2DC This section explains important considerations to keep in mind when configuring a 2DC configuration by using XP Continuous Access Journal and XP Continuous Access Synchronous with the system option mode 707.
primary volume is in PAIR or COPY status, the XP Continuous Access Synchronous pair becomes suspended by error. ◦ • To release an XP Continuous Access Journal pair, the primary data volume must not share the volume with XP Continuous Access Synchronous pair. Notes on XP Continuous Access Synchronous pair operations ◦ For the P-VOL, specify a volume that is not used by an XP Continuous Access Journal pair (2DC configuration with the system option mode 707).
Figure 49 Transferring Business Tasks to the Recovered Primary Site (2DC Configuration) Data Retention Utility You can create an XP Continuous Access Journal pair by using volumes to which the access attribute is assigned by Data Retention Utility. However, you cannot specify a volume with the S-VOL Disable attribute as the secondary data volume of the pair. Table 24 shows the access attribute and whether you can specify the volume for the Continuous Access Journal pair.
Table 24 The Access Attribute and Whether You Can Specify the Volume for the Continuous Access Journal Pair Whether You Can Specify the Volume As the Continuous Access Journal P-VOL As the Continuous Access Journal S-VOL Access Attribute Read/Write OK OK Read Only OK OK Protect OK OK S-VOL Disable OK No Read Only and S-VOL Disable OK No Protect and S-VOL Disable OK No Table 25 (page 107) shows the pair status and availability of Data Retention Utility operations from Storage Navigator.
Performance Monitor The Performance Monitor software product provides detailed information on the I/O activity and hardware performance of the storage systems. Performance Monitor can be used to monitor the storage systems that will be (or already are) performing XP Continuous Access Journal operations.
Planning of Journal Volumes This section explains what you need to consider when deciding on journal volume specifications. Data transfer speed for journal groups is affected by the specifications of journal volumes that the journal groups use. Therefore, you need to think about specifications of journal volumes to be used by journal volumes, in order to achieve the data transfer speed that you want.
increase in data to be transferred. If the data transfer speed of journal volumes is below the amount of temporary increase in the data to be transferred, the journal data for the temporary increase in the data to be transferred will not be stored in journal volumes in a timely manner.
Figure 51 Data Transfer Speed with XP Continuous Access Journal (Influence on Journal Volume Capacity) The following factors determine the required journal volume capacity: • The period of time during which the data transfer can continue between the hosts and the primary storage system when a temporary increase in transferred data occurs or when a communications path failure occurs between the primary and secondary storage system • The data transfer speed for the period of time that is mentioned above
If you do not want to reverse the primary data volume and the secondary data volume, you will be able to cope with a temporary increase in data transfers and a communications path failure between the primary storage system and the secondary storage system if the master journal volume satisfies the conditions mentioned earlier. Therefore, the data transfer speed and the volume capacity required for the restore journal volumes are smaller than those required for the master journal volumes.
Performing Remote Copy Between an XP12000/XP10000 Disk Array and an XP24000/XP20000 Disk Array XP Continuous Access Journal can be used to perform remote copy operations between an XP24000/XP20000 Disk Array and an XP12000/XP10000 Disk Array. Data can be copied from the XP24000/XP20000 Disk Array to the XP12000/XP10000 Disk Array, or vice versa.
Figure 53 Logical Path Between LDKC00 on the HP XP24000/XP20000 Disk Array and the HP XP12000/XP10000 Disk Array Volume that can Be Used to Create Pairs When you create an XP Continuous Access Journal pair consisting of an HP XP24000/XP20000 Disk Array volume and an HP XP12000/XP10000 Disk Array volume, the HP XP24000/XP20000 Disk Array volume must be a volume of LDKC00. The CU:LDEV number of LDKC00 is between 00:00 and 3F:FF.
For detailed information about the 3DC cascading configuration, see “XP Continuous Access Synchronous (3DC Cascading Configuration)” (page 82). For detailed information about the 3DC multi-target configuration, see “Data Volume Pairs” (page 18).
4 Using the XP Continuous Access Journal GUI This chapter describes how to use the XP Continuous Access Journal GUI: • “Journal Operation Window” (page 116) • “Pair Operation Window” (page 122) • “DKC Operation Window” (page 130) • “Usage Monitor Window” (page 136) • “History Window” (page 137) • “Optional Operation Window” (page 141) Journal Operation Window Use the Journal Operation window to configure journal groups.
Table 27 Journal Operation Window Details Item Description Tree Lists the journal groups in the local storage system, which is the storage system you log in to. The tree shows the journal groups used with XP Continuous Access Journal, and does not display the journal groups used with Universal Replicator for Mainframe. • Journal Groups: This item is located at the top of the tree. When you select this item, the upper-right list displays the journal groups in the local storage system.
Table 27 Journal Operation Window Details (continued) Item Description Restore: A restore journal group. Journal volumes and secondary data volumes are registered in this journal group. When this column is blank, neither journal volumes nor data volumes are registered in this journal group. Master/Restore: A journal group whose attribute is master/restore. Journal volumes, primary volumes, and secondary volumes are registered in this journal group.
Table 27 Journal Operation Window Details (continued) Item Description • JNLG (LDKC): Indicates the number of a journal group in the local storage system. The LDKC number is enclosed in parentheses following the journal group number (for example, 01,00). The journal group number ending in [&], indicates the journal group is in a 2DC configuration by using XP Continuous Access Journal and XP Continuous Access Synchronous (for example, 01 (00) [&]).
Table 27 Journal Operation Window Details (continued) Item Description Halt: An operation for splitting or deleting the mirror is in progress. The primary data volume and the secondary data volume are not synchronized. Stopping: An operation for splitting or deleting the mirror is in progress. The primary data volume and the secondary data volume are not synchronized.
Table 27 Journal Operation Window Details (continued) Item Description • Controller ID: The controller ID (name indicating the model) of the remote storage system. The controller ID for an XP24000/XP20000 Disk Array is 5. This column is blank if the attribute of the journal group is neither Master nor Restore. • Path Gr. ID: Displays path group IDs, which are used to identify path groups (for example, groups of logical paths). Up to eight logical paths can be registered in one path group.
Table 27 Journal Operation Window Details (continued) Item Description Apply Applies settings in the Preview list to the storage systems Cancel Cancels settings in the Preview list Information on the Journal Operation window will be updated when you do one of the following: • Click Apply. • Select another tab, and then click the Journal Operation tab again. • Select File, Refresh on the menu bar of the Remote Web Console main window. • Select Modify mode when you are in View mode.
Figure 56 Volume List in the Pair Operation Window Table 28 Pair Operation Window Details Item Description Tree Lists the ports in the local storage system. Host groups appear below each port. Selecting a port or a host group, lists the volumes for the port or the host group. You can select only one port or one host group at one time; you cannot select two or more simultaneously.
Table 28 Pair Operation Window Details (continued) Item Description • VOL: Identifies the volumes in the local storage system. A device ID ending in # (for example, 00:00:3C #) indicates the LDEV is an external volume. For details on an external volume, see the HP StorageWorks XP24000/XP20000 External Storage Software User Guide. A device ID ending in X (for example, 00:00:3C X) indicates the LDEV is an XP Thin Provisioning virtual volume.
Table 28 Pair Operation Window Details (continued) Item Description PAIR: The volume is paired with another volume. The two volumes are fully synchronized. All updates from the host to the primary data volume are duplicated at the secondary data volume. PSUS: The pair has been split by the user (pairsplit-r), or the pair has been released by the user from the secondary storage system (pairsplit-S). The primary data volume and the secondary data volume are not synchronized.
Table 28 Pair Operation Window Details (continued) Item Description • JNLG-MirrorID: A journal group number and a mirror ID. The number on the left of the hyphen (-) is a journal group number. The number on the right of the hyphen is a mirror ID. A journal group number ending in [M] indicates the journal group is in a 3DC configuration with three Continuous Access Journal sites (e.g., 01[M] - 03).
Table 28 Pair Operation Window Details (continued) Item Description • Sync: If the volume in the local storage system is a primary data volume, this column shows progress of an initial copy operation. If the volume in the local storage system is a secondary data volume, this column shows information in the following ways: ◦ If the volume pair is not split, this column shows nothing.
Table 28 Pair Operation Window Details (continued) Item Description • Pair Copy Time: The time taken for the copy operation (from the start of the operation to the end). The time that is shown in Pair Copy Time differs from the time that is shown in Copy Time on the History window. To create a pair: 1. MCU receives a request to create a pair. 2. MCU receives a request to start the paircreate operation. 3.
Table 28 Pair Operation Window Details (continued) Item Description • CLPR: The number and the name of the CLPR where the data volume belongs. • Pair Copy Time: The time taken for the copy operation (from the start of the operation to the end). The time that is shown in Pair Copy Time differs from the time that is shown in Copy Time on the History window. To create a pair: 1. MCU receives a request to create a pair. 2. MCU receives a request to start the paircreate operation. 3.
Table 28 Pair Operation Window Details (continued) Item Description Preview The number to the left of the slash (/) indicates the number of items appearing in the Preview list. The number to the right of the slash indicates the maximum number of items that can appear in the Preview list. For example, if Preview 010/8192 appears, you can add another 8,182 items to the Preview list.
DKC is an acronym for disk controller, which controls an entire storage system. XP Continuous Access Journal windows use the term DKC to indicate a storage system. LDKC is an acronym for logical disk controller, and it also may be called logical DKC. LDKC controls the logical storage system that exists in a storage system. In the XP Continuous Access Journal window, the term LDKC indicates a logical storage system.
Table 29 DKC Operation Window Details (continued) Item Description Operation List Lists detailed information about one of the following: • Remote storage systems (see “Viewing Information about Remote Storage Systems” (page 132)) • Logical paths (see “Viewing Information about Logical Paths” (page 133)) • Ports on the local storage system (see “Viewing Information about Ports on the Local Storage System” (page 134)) Preview List Shows changes made in the window before the changes are applied to the sto
The Operation list shows the following information: Item Description Tree Lists the remote storage systems of each LDKC in the local storage system. The following information appears to the right of the icon of the remote storage system: • Controller ID of the remote storage system. The model name of the remote storage system. • Serial number of the remote storage system • Path group ID Note: The LDKC#01 cannot be used in this version of XP Continuous Access Journal.
1. 2. In the Display box, select DKC. Select a remote storage system from the tree. The list shows logical paths. Each row in the list indicates one logical path (Figure 61 (page 134)). Figure 61 Logical Path Information in the DKC Operation Window The Operation list shows the following information: Item Description Path Gr. ID The path group ID. The icon indicates the status of the path: • The logical path is in normal status. • A failure occurred at the logical path.
1. In the Display box, select Port. The tree shows a list of channel adapters and port attributes (Figure 61 (page 134)). 2. Do one of the following in the tree: • Select Subsystem. The list shows all the ports on the local storage system. • Select a channel adapter. The list shows ports on the channel adapter. • Select a port attribute. The list shows ports that have the selected port attribute.
Usage Monitor Window Use the Usage Monitor window (see Figure 63 (page 136)) to monitor the connected storage system. This window provides the remote copy I/O statistics for all volumes to be monitored on the connected storage system, and displays the status of remote copy usage monitoring.
History Window The History window (see Figure 64 (page 137)) displays the history of the operations for data volume pairs. For example, the window shows the date and time when data volume pairs are created or released. To open the History window, do one of the following: • • If XP Continuous Access Journal has not been started: ◦ Use your Web browser to open the storage device list. In the storage device list, select the select the storage system to log in.
Table 31 History Window Details Item Description Status The current status of operation history: • No history file exists: Operation history does not exist. • Reading a history file failed: An attempt to read operation history failed. • Updating ... n (%): Updating of operation history is now in progress, where n (%) indicates the progress (in %). When the updating is in progress, the checking process automatically continues until updating finishes. The updating process is checked at 10-second intervals.
Table 32 Operations Displayed in the History Window Displays Descriptions Pair definition A data volume pair was defined. Paircreate Start Creation of the data volume pair was started. Paircreate Complete Creation of the data volume pair was finished. Pairresync Start Restoring the data volume pair was started. Pairresync Complete Restoring the data volume pair was finished. Pairsplit-r Start Splitting (suspending) the data volume pair was started.
Table 32 Operations Displayed in the History Window (continued) Displays Descriptions Status Change by RCU (PSUS/PSUE to SMPL; Pairsplit-S Start) An operation for releasing a pair has been started at the secondary storage system. The status of the data volume pair will change from PSUS or PSUE to SMPL. Status Change by RCU (COPY to SMPL; Pairsplit-S Start) An operation for releasing a pair has been started at the secondary storage system.
• If a failure occurs with two or more data volume pairs at the same time, the number of pairs showing Pairsplit-r(Failure) or Ready for Delta resync(Failure) may not match the actual number of pairs where the failure occurs. • If a data volume pair consists of LUSE volumes, the list only displays the top LDEV numbers of the LUSE volumes. • The copy time might not be shown in the Copy Time column, even though Paircreate Complete or Pairresync Complete is shown in the Operation column.
Table 33 Optional Operation Window Details (continued) Item Description Preview List When you change settings in the Optional Operation window, the Preview list shows the changes. Here, the changes have not been applied to the storage system. Clicking Apply applies the changes to the storage system. Operation Indicates the operation that will occur when you click Apply: • Change System Option: Change storage system options. • Blank: Nothing will occur when you click Apply.
5 Configuring Storage Systems and Logical Paths This chapter describes how to set up XP Continuous Access Journal in your system and how to configure your system for remote copy operations.
• Display status of logical paths (see “Viewing the Status of Logical Paths” (page 152)). • Delete the relationship between the primary and the secondary storage systems (see “Removing the Relationship Between Primary and Secondary Storage Systems” (page 158)). Note: Throughout this chapter, the primary and the secondary storage systems are sometimes referred to as local storage systems or remote storage systems.
The port assigned to SLPR other than SLPR0 can be set to the target port attribute only. WARNINGS: • Before changing a Fibre Channel port to an initiator port, disconnect the port from the host, release all affected data volume pairs, delete all logical paths from the initiator port to the remote storage system, and then remove all channel paths to the port.
To change the option settings for the storage system: 1. Ensure that the Remote Web Console main window is in Modify mode. For detailed information about how to do this, see the HP StorageWorks XP24000/XP20000 Remote Web Console User Guide. 2. 3. Ensure that the Optional Operation window is open (see “Optional Operation Window” (page 141)). Select Subsystem in the tree. The list shows storage system options (see Figure 66 (page 146)). 4. 5. 6. 7. 8.
start the 65th pair until one of the other pairs is synchronized. When you change the Maximum Initial Copy Activities setting, the new setting applies to pairs created after the setting was changed, not to existing pairs. If the value of Maximum Initial Copy Activities is increased, the time for the initial copy processing is shortened. However, the host operation may be affected because the write processing to the tracks in which the copy operation is in progress is forced to wait.
9. Select Option. 10. In the DKC Option window, configure logical path options and storage system options. For detailed information about the options, see the next section and read the explanations in “DKC Option Window” (page 150). 11. Click Set to close the DKC Option window. 12. See the Preview list to check the settings that you have made. • To modify a setting, select and right-click the setting from the Preview list and then select Modify. A window opens and allows you to modify the setting.
TheAdd DKC window shows the following: • S/N: Enter the five-digit serial number of the remote storage system. • LDKC: Enter the LDKC number of the remote storage system. Enter 00 when the remote storage system is an XP12000/XP10000 Disk Array or USP V/VM. Note: LDKC#01 cannot be used in this version. • Controller ID: Enter the controller ID (model name that indicates the model) of the remote storage system. The controller ID for an XP24000/XP20000 Disk Array is 5. • Path Gr.
6. 7. 8. 9. On the DKC Option window (Figure 69 (page 150)), change the options as desired. For detailed information about the options, see the explanations below Figure 69 (page 150). Click Set to close the DKC Option window. See the Preview list to check the settings that you have made. • To modify a setting, select and right-click the setting from the Preview list, and then select Modify. A window opens and allows you to modify the setting.
1. 2. Make sure the remote copy connections are properly configured. Ensure that the Remote Web Console main window is in Modify mode. For detailed information about how to do this, see the HP StorageWorks XP24000/XP20000 Remote Web Console User Guide. 3. 4. 5. 6. 7. 8. 9. Ensure that the DKC Operation window is open (see “DKC Operation Window” (page 130)). In Display, select DKC. Do one of the following: • In the tree, select a remote storage system.
Figure 70 Add Path Window The Add Path window shows the following: • Port: Select an initiator port on the local storage system. When specifying a port, you can use the keyboard to enter the port number. When you enter the port number, you can abbreviate the port number to two characters. For example, you can enter 1A instead of CL1-A. You can use uppercase and lowercase letters. • Pair-Port: Select an RCU target port on the remote storage system.
3. 4. 5. Do one of the following: • Click LDKC from the tree. In the upper-right list, select and right-click a remote storage system. • Click the remote storage system from the tree. In the upper-right list, select and right-click a logical path. Select DKC Status. The DKC Status window opens (Figure 71 (page 153)).
• M-R Path: The type of channel interface between the local and the remote storage systems. This column displays Fibre. • Minimum Paths: The minimum possible number of paths between the local and the remote storage systems. • RIO MIH Time: The RIO MIH timer value, which is the wait time until a data transfer from the local storage system to the remote storage system is complete. • DKC Registered: The date and time when the local and the remote storage systems are associated with each other.
Deleting Logical Paths Before deleting the logical path(s), make sure that the remaining number of logical paths will be greater than the minimum number of paths setting (see “Changing Options for Logical Paths and Storage Systems” (page 149)). The delete path operation will fail if the number of remaining paths is equal to or less than the minimum number of paths. To delete the logical path(s), follow the described in this section.
When the Power is Removed from the Primary Storage System If power is removed from the primary storage system during remote copy operations, the primary storage system assumes that a failure occurred, and then splits all data volume pairs. If the primary storage system splits data volume pairs, the secondary storage system also assumes that a failure occurred, and then splits all data volume pairs.
If you turn the power off without changing the status of all data volume pairs to PSUS, and then you turn the power back on, the status of all data volume pairs could be suspended due to a failure. Power Off the Secondary Storage System To power off the secondary storage system during remote copy operations, you must ensure, before powering off the storage system, that all data volume pairs or mirrors (that is, pairs of journal groups) are split, and that the status of all the data volume pairs is PSUS.
data volume pair of the secondary storage system is PAIR, you must suspend the data volume pair of the secondary storage system by using Remote Web Console. After confirming that the status of the data volume pair of the primary and secondary storage system is PSUS, restore the data volume pair that has been split at the primary storage system.
6 Using Journal Groups This chapter describes how to set up XP Continuous Access Journal in your system and configure your system for remote copy operations. The primary site administrator and the secondary site administrator must configure journal groups, as well as ports and logical paths.
in to the secondary storage system and are using XP Continuous Access Journal, the secondary storage system is a local storage system and the primary storage system is a remote storage system. Registering Journal Volumes in a Journal Group To perform remote copy operations with XP Continuous Access Journal, the primary site administrator must register journal volumes in journal groups in the primary storage system.
6. Select Add. The JNL Volumes list shows the volumes that you want to register. The Operation column of the list shows Add. 7. 8. 9. Click Set to close the Edit JNL Volumes window. See the Preview list to check the settings that you have made. • To add volumes to register, select and right-click a volume in the Preview list, and then select Modify. A window opens and allows you to add volumes. • To cancel registering a volume, select and right-click the volume, and then select Cancel.
◦ CLPR: The number and the name of the CLPR where the journal volume belongs. ◦ Operation: Shows one of the following: Blank This column is usually blank. Add Indicates a volume to be added to a journal group. Delete Indicates a volume to be deleted from a journal group. • Add: Use this button to register volumes in journal groups. Select the volumes from Free Volumes, and then click Add to add the volumes to JNL Volumes. • Delete: Use this button to delete volumes from journal groups.
Figure 73 The Free Volumes List and the PG Button in the Edit JNL Volumes Window Figure 74 The Free Volumes List and the CU Button in the Edit JNL Volumes Window • JNL Group: The number of a journal group. A journal group number ending in [&] indicates the journal group is in a 2DC configuration with Continuous Access Journal and TrueCopy Synchronous (e.g., 01 [&]). A journal group number ending in [M] indicates the journal group is in a 3DC configuration with three Continuous Access Journal sites (e.g.
1. Ensure that the Remote Web Console main window is in Modify mode. For detailed information about how to do this, see the HP StorageWorks XP24000/XP20000 Remote Web Console User Guide. 2. 3. 4. Ensure that the Journal Operation window is open (see “Journal Operation Window” (page 116)). In the tree of the Journal Operation window, select one journal group under Registered. You cannot select more than one journal group.
Displaying Detailed Information about a Journal Group To view detailed information about journal groups in the primary storage system, log in to the primary storage system and then perform the following operation: 1. 2. 3. 4. 5. Ensure that the Journal Operation window is open (see “Journal Operation Window” (page 116)). In the tree of the Journal Operation window, select one journal group. You cannot select more than one journal group.
01 (00) [&]). A journal group number ending in [M] indicates the journal group is in a 3DC configuration with three Continuous Access sites (e.g., 01 (00) [M]). • Attribute: The attribute of the journal group. When one journal group uses multiple mirror IDs, Attribute indicates the attribute of the data volume in the journal group whose mirror ID is not Hold, Holding, or Hold(Failure). In the case of a master journal group, Attribute indicates Master.
• Speed of Line: The line speed (in megabits per second) of data transfer. One of the following appears: 256, 100, or 10. The recommended setting values are as follows: ◦ 10 is recommended if the line speed is from 10 Mb/s to 99 Mb/s. ◦ 100 is recommended if the line speed is from 100 Mb/s to 255 Mb/s. ◦ 256 is recommended if the line speed is 256 Mb/s and more. This setting does not take effect on master journal groups.
◦ Volume: The number of data volumes that are registered in the mirror. ◦ Capacity: The total capacity of data volumes that are registered in the mirror. ◦ Remote Command Device: Displays LDEV numbers if the remote command device is assigned to the mirror. This column is blank if the mirror is not assigned to the remote command device. • Previous: Displays detailed information about the previous journal group. • Next: Displays detailed information about the next journal group.
3. Do one of the following: • In the tree, right-click a journal group under Registered, and then select JNL Groups and Change JNL Option. • In the upper-right list, right-click the desired journal group, and then select JNL Groups and Change JNL Option. CAUTION: • 4. You can select Change JNL Option only when one of the following conditions is satisfied: ◦ The attribute of the journal group is Initial. ◦ The status of the journal group is Active. ◦ The status of the journal group is Stop.
Figure 76 Change JNL Option Window The Change JNL Option window shows the following: • Inflow Control: Specify whether to restrict inflow of update I/Os to the journal volume (in other words, whether to slow delay response to hosts). Yes indicates inflow will be restricted. No indicates inflow will not be restricted. If Yes is selected and the metadata or the journal data is full, the update I/Os may stop.
• Copy Pace: Specify the pace (speed) for an initial copy activity for one volume. The default is Low. ◦ Low: The speed of the initial copy activity is slower than Medium and High. ◦ Medium: The speed of the initial copy activity is faster than Low and slower than High. To specify Medium, ensure that the amount of I/Os (that is, write requests from hosts to primary data volumes) is 10 MB/s or less per one parity group. If it exceeds 10 MB/s, data volume pairs may become split (suspended).
This setting does not take effect on master journal groups. However, if the RAID Manager horctakeover command is used to change a master journal group into a restore journal group, this setting will take effect on the journal group. If you set Use, this setting takes effect on the journal volumes of RAID 5 or RAID 6 that are in the journal group. For external volumes, non-RAID 5 journal volumes, and non-RAID 6 journal volumes, Use works the same as Not Use.
5. 6. See the Preview list to check the journal groups that you want to delete. • To cancel deleting a journal group, select and right-click the journal group and then select Cancel. • If necessary, you can repeat steps 3 to 5 to specify other journal groups. Click Apply to apply the settings. If an error occurs, the error code appears in the right column of the Preview list. To view detailed information about the error, right-click the error code and select Error Detail.
Figure 77 Pairsplit-r Window The Pairsplit-r window shows the following: • S-VOL Write: Specify whether hosts can issue read I/O and write I/O to the secondary data volume after the mirror is split. The default is Disable. ◦ If you select Enable, hosts can issue read I/O and write I/O to the secondary data volume after you split the mirror. ◦ If you select Disable, hosts cannot issue read I/O and write I/O to the secondary data volume after you split the mirror. • Range: Specify the split range.
1. Ensure that the Remote Web Console main window is in Modify mode. For detailed information about how to do this, see the HP StorageWorks XP24000/XP20000 Remote Web Console User Guide. 2. 3. Ensure that the Journal Operation window is open (see “Journal Operation Window” (page 116)). Do one of the following: • In the tree, select a master journal group or a restore journal group under Registered.
3. Do one of the following: • In the tree, select a master journal group or a restore journal group under Registered. • In the tree, select Journal Groups or Registered, and then select a master journal group or a restore journal group from the list to the right. A list of mirrors appears. One row in the list represents one mirror. 4. 5. 6. 7. 8. Locate mirrors that are not in Initial status. From the mirrors, select and right-click the mirror(s) from which you want to delete data volumes.
Figure 78 Assign Remote Command Device Window The Assign Remote Command Device window displays the following settings. Using the Assign Remote Command Device window, you can assign two remote command devices to two mirrors in one operation: • Mirror ID: Selects mirror ID. To assign the remote command device to the mirror of XP Continuous Access synchronous pair in the 3DC multi-target configuration, specify 00 as the mirror ID.
7 Performing XP Continuous Access Journal Pair Operations This chapter discusses using the Pair Operation window of XP Continuous Access Journal.
Figure 79 Display Filter Window The Display Filter window shows the following: • GID: Select the group number of a host group to be displayed. If you select All, all host groups display in the list. • JNL Group: Select the journal group to be displayed. If you select All, all journal groups will be displayed in the list. • Mirror: Select the mirror to be displayed. If you select All, all mirrors display in the list. • P-VOL/S-VOL: Select the type of volumes to be displayed.
• Set: Applies the settings in the Display Filter window to the list. • Cancel: Discards the settings and closes the window. Saving Pair Status Information to a Text File The export function of XP Continuous Access Journal enables you to save pair status information to a text file. An example of the text file is shown in “Example of an Exported Text File” (page 180). You can use the export function only while the client file access is enabled.
• 00 is the LDCK number when the volume is a volume of an XP12000/XP10000 Disk Array or USP/VM. • A journal group number for the local storage system ending in [M] indicates the journal group is in a 3DC configuration with three XP Continuous Access Journal sites (e.g., 01 [M]). To save information in a text file: 1. 2. If necessary, follow the instruction in “Reviewing the Pair Operation Window” (page 178) to filter information in the list.
7. In S-VOL, specify the secondary data volume. • Use the left most drop-down list to specify a port. • Use the drop-down list in the middle to specify a GID, which is a group number of a host group. • Use the right most drop-down list to specify a LUN. If more than one primary data volume is specified in the list, you can specify secondary data volumes in three ways. For detailed information, see the explanation about the Select Other S-VOL(s) option later in this section. 8.
Figure 80 Paircreate Window Creating a Pair of Data Volumes (Paircreate) 183
The Paircreate window shows the following: • P-VOL: A primary data volume. The numbers indicate the port number, the GID, and the LUN of the primary data volume. The numbers in parentheses indicate the LDKC number, the CU number, and the LDEV number. The GID is a group number for a host group. This column shows only one primary data volume even when two or more primary data volumes are selected in the Pair Operation window. P-VOL shows only the primary data volume that has the smallest LUN (LU number).
• Mirror: Assigns a master journal group to the primary data volume, assigns a restore journal group to the secondary data volume, and also assigns a mirror ID to the volume pair. ◦ M-JNL: Assigns a master journal group to the primary data volume. M-JNL does not show journal group numbers used by Universal Replicator for Mainframe. ◦ Mirror ID: Assigns a mirror ID to the volume pair. ◦ R-JNL: Assigns a restore journal group to the secondary data volume.
Displaying Detailed Information about a Pair of Data Volumes Use the Detailed Information window to view detailed information about a pair of data volumes. To view detailed information about a pair of data volumes, follow the procedure described in this section. The primary storage system administrator and the secondary storage system administrator can perform this operation. 1. 2. 3. 4. 5. Ensure that the Pair Operation window is open (see “Pair Operation Window” (page 122)).
Figure 81 Detailed Information Window The Detailed Information window shows the following: • Status: The status of the pair. If the pair is split (or suspended), Status also shows the suspend type. If the pair is waiting for initial copy, Status also shows the word (Queuing).
indicated by the arrow shaped icon is invalid. The copy direction is determined when you perform the delta resync operation. • Sync: If the volume in the local storage system is a primary data volume, Sync shows progress of an initial copy operation. If the volume in the local storage system is a secondary data volume, Sync shows information in the following ways: ◦ If the volume pair is not split, Sync shows nothing.
incorrect information appears. So, unless you have any special circumstances, do not change or delete the port ID, GID, or LUN that you specified when creating the pair. ◦ If a XP Continuous Access Journal pair for delta resync operation is displayed in a 3DC multi-target configuration with three Continuous Access Journal sites, the information about the remote volume (secondary volume) is displayed in the P VOL field. • CLPR: The CLPR number and the CLPR name of the volume in the local storage system.
for the currently shown 1,024 rows. The Display Filter settings (see “Filtering Information in the List in the Pair Operation Window” (page 178)) can affect how Previous or Next is recognized. • Refresh: Updates the pair status information. • Close: Closes the Detailed Information window. Changing Options for a Data Volume Pair Use the Change Pair Option window to change options for a pair of data volumes. Only the administrator of the primary storage system can perform this operation.
When the Change Pair Option window opens, the current option appears. • Set: Applies the settings to the Preview list in the Pair Operation window (“Pair Operation Window” (page 122)). • Cancel: Discards the settings and closes the window. Splitting a Pair of Data Volumes (Pairsplit-r) After the initial copy operation finishes, you can use the Pairsplit-r window to split the pair of data volumes. To split one or more pairs, follow the procedure described in this section.
The Pairsplit-r window shows the following: • • S-VOL Write: Specify whether to permit hosts to write data to the secondary data volume. The default is Disable (that is, do not permit). ◦ Disable: Hosts cannot write data to the secondary data volume while the pair is split. ◦ Enable: Hosts can write data to the secondary data volume while the pair is split. This option is available only when the selected volume is a primary data volume. Range: Specify the split range.
as modified, so that the primary storage system performs the equivalent of an entire initial copy operation when the pairs are resumed. The administrator of the primary storage system can follow the procedure described in this section to restore one or more pairs that have been split or to perform the delta resync operation. The administrator of the secondary storage system cannot perform the following operation. 1. Ensure that the Remote Web Console main window is in Modify mode.
Figure 84 Pairresync Window The Pairresync window shows the following: • Range: Specify the restore range. The default is LU if two or more pairs in the same consistency group are selected; the default is Group if not. The default setting is Group when the pair status is HOLD, HOLDING, or HLDE, and in that case, you cannot change the default setting. ◦ LU: Only the specified pairs are restored. ◦ Group: All pairs in the same consistency group(s) as the selected pair(s) are restored.
• • Resync Mode: Indicates the processing after recovery of the pairs. ◦ Normal: Split pair whose status is PSUS or PSUE is recovered. ◦ Delta: The delta resync operation is performed. For information about the requirements to perform the delta resync operation, see “Requirements for Performing the Delta Resync Operation” (page 89). ◦ Return to standby: The status of the pairs is recovered from HLDE to HOLD. Error Level: Specify the range used for splitting a pair when a failure occurs.
window (see “Displaying Detailed Information about a Pair of Data Volumes” (page 186)) to monitor the detailed status of each pair. To restore a pair that was released from the secondary storage system, first release the pair from the primary storage system, and then restore the pair using the appropriate initial copy option. Note: If a pair deletion is performed, it is possible that the deletion takes effect on the secondary data volume later than it takes effect on the primary data volume.
waiting for device-end from a primary storage system that cannot communicate with its the secondary storage system, thus allowing host operations to continue. If you specify Force when the pair status is other than SMPL, Range is set to Group. ◦ Normal: The pairs are released only if the primary storage system is able to change the pair status of the primary and secondary data volumes to SMPL.
If a pinned track occurs on an XP Continuous Access Journal secondary data volume that is in the 2DC configuration (that is, XP Continuous Access Journal and XP Continuous Access Synchronous with the system option mode 707), use the following procedure: 1. Connect to the XP Continuous Access Synchronous primary storage system (primary site). 2.
8 Usage Monitor Operations This chapter describes using the Usage Monitor window to follow the collection and display of performance monitoring statistics.
3. In the Display Item window (see “Display Item Window” (page 201)), select an appropriate option in Select Volume: • To view I/O statistics for all LDEVs to be monitored in the storage system, select All Volumes. • To view I/O statistics for a specific journal group, select JNL Group, and then enter a journal group number (00-FF). If you specify an unused journal group, the graph is not available.
Figure 86 Display Item Window Table 36 Remote Copy I/O Statistics Statistic Description Host I/O Write Record Count The number of write I/Os per second. Write Transfer Rate The amount of data that is written per second. The unit is kilobytes per second. Initial Copy Initial Copy Hit Rate The initial copy hit rate. The unit is percent. Average Transfer Rate The average transfer rate for initial copy operations. The unit is kilobytes per second.
Table 36 Remote Copy I/O Statistics (continued) Statistic Description M-JNL Total Number of Journal The number of journals at the primary storage system. M-JNL Average Transfer Rate The average transfer rate for journals in the primary storage system. The unit is kilobytes per second. M-JNL Average RIO Response The remote I/O process time on the primary storage system. The unit is milliseconds.
Table 38 I/O Stats in Asynchronous Copy and R-JNL When Journal Group Attribute is Master/Restore. Statistic Description Asynchronous Copy R JNL Asynchronous RIO count The number of asynchronous remote I/Os per second at the secondary storage system. R JNL Total Number of Journal The number of journals at the secondary storage system. R JNL Average Transfer Rate The average transfer rate for journals in the secondary storage system. The unit is kilobytes per second.
(1) Date and time when the operation finished (2) Time taken for copying (from the start to the end of copying). This is displayed only when the operation (see 7) is Paircreate Complete or Pairresync Complete.
9 Performing Disaster Recovery Operations This chapter describes how to determine the best approach for disaster recovery. The user should anticipate and plan for all types of failures and disasters.
XP Continuous Access Journal pairs enables your business tasks to be taken over to the secondary site, using secondary data volumes in the secondary site. • The horctakeover command checks the pair status of secondary data volumes and splits journal groups that will become an XP Continuous Access Journal pair. This ensures consistency of secondary data volumes and makes the secondary data volumes usable.
Resuming Normal Operations at the Primary Site Once the XP Continuous Access Journal volume pairs have been established in the reverse direction, you are ready to resume normal operations at the primary site. The following procedure explains how to resume normal operations at the primary site by using RAID Manager.
4. 5.
Figure 87 Recovery from Failure in the Primary Site (When Delta Resync Operation is Performed) Recovering from Primary Site Failures in XP Continuous Access Journal 3DC Cascading configuration If a disaster or failure occurs in the primary site in a 3DC cascading configuration combining XP Continuous Access Journal sites, you can use XP Continuous Access Journal primary data volumes in the intermediate site to enable the intermediate site to take over your business tasks.
Figure 88 Transferring Operations to the Intermediate Site from the Primary Site in the Case of Failure For detailed information about how to use RAID Manager, see the HP StorageWorks RAID Manager User Guide. When a disaster or failure occurs, the above procedure allows you to resume your business tasks by using the XP Continuous Access Journal pair volume in the intermediate site.
Figure 89 Transferring Operations to the Primary Site in the Case of Failure in the Intermediate Site Recovering from a Failure by Duplicating Volumes in a 3DC Cascading Configuration In the 3DC cascading configuration that consists of three Continuous Access Journal sites, if a failure occures between the primary site and the intermediate site of the Continuous Access Journal pair, the status of journal groups in the primary site and the intermediate site might remain Stopping (the pair status is Suspendi
1. 2. 3. Check the consistency of the XP Continuous Access Synchronous S-VOL in the intermediate site. Use RAID Manager to execute the horctakeover command on the XP Continuous Access Synchronous pair that exists between the primary site and the intermediate site. Wait until the XP Continuous Access Synchronous S-VOL in the intermediate site becomes suspended (in SSWS status) or changes to an XP Continuous Access Synchronous P-VOL.
Notes: • If you followed step a above, remove failures in the primary site and other locations, change the system to a 3DC multi-target configuration (see “Changing to a 3DC Multi-Target Configuration After Recovering from Primary Site Failures” (page 93)), and then follow the instructions in “Transferring Business Tasks from the XP Continuous Access Secondary Site to the Primary Site (in a 3DC Multi-target Configuration)” (page 94) in order to transfer the business tasks back to the primary site.
1. 2. 3. 4. Use RAID Manager to execute the horctakeover command on the XP Continuous Access Synchronous pair. Use the XP Continuous Access Synchronous S-VOL to resume your business tasks. Check the execution result of the horctakeover command.
Figure 91 Recovery from a Disaster in the Primary Site (When Delta Resync Operation Is Performed) Recovering from a Disaster in a 2DC Configuration of XP Continuous Access Journal and XP Continuous Access Synchronous If a disaster or a failure occurs on the primary site, which is part of the 2DC configuration by using XP Continuous Access Journal and XP Continuous Access Synchronous with the system option mode 707, you can continue your business tasks by using the XP Continuous Access Journal secondary vol
4. 5. Confirm that the XP Continuous Access Journal S-VOL has changed to SMPL status. When the XP Continuous Access Journal S-VOL status changes to SMPL, use that volume and resume the business tasks on the remote site. Note: Unlike the 3DC cascading configuration, the 2DC configuration does not allow you to continue your business tasks on the intermediate site.
Recovering the Primary Site from a Failure When the System Consists of Multiple Primary and Secondary Storage Systems If a disaster or a failure occurs on the primary site, where the system consists of multiple primary and secondary storage systems, you can continue the business tasks in the remote site and maintain the data consistency in the consistency group. If a disaster or a failure occurs on the primary site, first transfer the tasks from the primary to the secondary site.
10 Troubleshooting This chapter describes general troubleshooting errors and corrective actions: • “General Troubleshooting” (page 218) • “Checking XP Continuous Access Journal Error Codes” (page 223) • “Checking Service Information Messages (SIMs)” (page 241) • “Troubleshooting When Using RAID Manager” (page 224) • “Calling HP Technical Support” (page 243) General Troubleshooting Table 41 (page 218) provides general troubleshooting information for XP Continuous Access Journal.
Table 41 General Troubleshooting Information for XP Continuous Access Journal (continued) Error Corrective Action The pair status is suspended. Check the pair status in the Detailed Information window, and see “Troubleshooting Suspended XP Continuous Access Journal Pairs” (page 222). Paircreate or pairresync operation resulted in If the timeout error was caused by a hardware failure, a SIM a timeout error. is generated.
Table 42 Troubleshooting Problems with the Status of Logical Paths (continued) Path Status Description Resource Shortage The storage system rejected (Port) the request for establishing a logical path because all or resources in the local and Resource Shortage remote storage systems (Pair-Port) are being used for other connections. Corrective Action Delete the failed path, and also delete all paths and remote storage systems not currently in use.
Table 42 Troubleshooting Problems with the Status of Logical Paths (continued) Path Status Description Corrective Action Communication Failed The local storage system Make sure that the remote storage system port and connected to the remote network relay devices (for example, cables and storage system successfully, switches) are properly configured and functioning. but a logical communications timeout occurred. Logical Blockade A failure occurs at a local storage system port.
Table 43 Troubleshooting Suspended XP Continuous Access Journal Pairs Suspend Type Applies To Description Corrective Action PSUE, by RCU Primary data volume The primary storage system suspended a pair because the primary storage system detected an error condition at the secondary storage system. The suspend type for the secondary data volume is by MCU. Clear the error condition at the secondary storage system or secondary data volume.
Table 44 Resolving XP Continuous Access Journal Pair Suspension Classification Causes of Suspension SIM Primary storage system hardware or secondary storage system hardware Hardware redundancy has been lost DC0x due to a blockade condition. As a DC1x result, one of the following operations DC2x could not be completed: primary-secondary storage system communications, journal creation, copy operation, restore operation, staging process, or de-staging process.
Troubleshooting When Using RAID Manager When an error has occurred in an XP Continuous Access Journal pair operation using RAID Manager, identify the cause of the error by referring to the log displayed on the RAID Manager window or the RAID Manager operation log file. The RAID Manger operation log file is stored in the following directory by default: /HORCM/log*/curlog/horcmlog_HOST/horcm.log Where: • * is the instance number. • HOST is the host name.
Table 45 Error Codes and Error Contents When Operating RAID Manager Error Code (SSB1) Error Code (SSB2) B901 B901 B9E0 B9E0 B9E1 B9E1 B9E2 B9E2 B9E4 B9E4 D004 D004 Error Contents An error occurred in the XP Continuous Access Journal pair operation. 3703 A request of XP Continuous Access Journal Pairresync (suspend transition mode) was received. However, the command was rejected because the PIN data existed in the journal volume.
Table 45 Error Codes and Error Contents When Operating RAID Manager (continued) Error Code (SSB1) Error Code (SSB2) Error Contents A request for XP Continuous Access Journal Paircreate or XP Continuous Access Pairresync was received. However, the command was rejected because the XP Continuous Access pair was in a status other than suspending or was not used by XP Continuous Access in the 2DC configuration which consists of XP Continuous Access Journal and XP Continuous Access.
Table 45 Error Codes and Error Contents When Operating RAID Manager (continued) Error Code (SSB1) Error Code (SSB2) Error Contents 3744 A request of pair creation using journal group in the configuration where three XP Continuous Access Journal sites were combined was received. However, since the primary volume was used by other program, the command was rejected.
Table 45 Error Codes and Error Contents When Operating RAID Manager (continued) Error Code (SSB1) Error Code (SSB2) Error Contents 8F17 A request of XP Continuous Access Journal Paircreate was received. However, the command was rejected because the specified volume is in the state of online from the host. 8F18 A request of XP Continuous Access Journal Paircreate was received. However, the command was rejected because the specified volume is used in a pair of another program.
Table 45 Error Codes and Error Contents When Operating RAID Manager (continued) Error Code (SSB1) Error Code (SSB2) Error Contents A request of XP Continuous Access Journal Paircreate was received. However, the command was rejected because the specified volume was blocked.
Table 45 Error Codes and Error Contents When Operating RAID Manager (continued) Error Code (SSB1) B9E2 230 Troubleshooting Error Code (SSB2) B901 Error Contents XP Continuous Access Journal Pair could not be deleted because the mirror ID was invalid.
Table 45 Error Codes and Error Contents When Operating RAID Manager (continued) Error Code (SSB1) /B901/ Error Code (SSB2) Error Contents B902 XP Continuous Access Journal Paircreate cannot be performed because the mirror ID is invalid. /B9E1/ B907 The command was rejected because the volume status was SMPL. /B9E2/ B90A The S-VOL hide mode is not supported. B90D XP Continuous Access Journal Paircreate cannot be performed because the XP Continuous Access Journal program product is not installed.
Table 45 Error Codes and Error Contents When Operating RAID Manager (continued) Error Code (SSB1) Error Code (SSB2) Error Contents A request of XP Continuous Access Journal Paircreate was received. However, the command was rejected because the CLPR number of the specified volume differed from the CLPR number of the journal group. 232 Troubleshooting E846 A request from XP Continuous Access Journal Paircreate was received.
Table 45 Error Codes and Error Contents When Operating RAID Manager (continued) Error Code (SSB1) Error Code (SSB2) Error Contents E882 A request of XP Continuous Access Journal Paircreate was received. However, the command was rejected because the emulation type of the specified master journal group or the restore journal group was invalid. E883 The specified mirror ID number or the CTG number differs from the registered mirror ID number or the CTG number.
Table 45 Error Codes and Error Contents When Operating RAID Manager (continued) Error Code (SSB1) Error Code (SSB2) E8A9 XP Continuous Access Journal copy pair cannot be suspended because of the power-on processing. E8B6 A request of XP Continuous Access Journal Paircreate (journal suspend mode) was received. However, the command was rejected because the mirror ID of the specified restore journal group was already used.
Table 45 Error Codes and Error Contents When Operating RAID Manager (continued) Error Code (SSB1) Error Code (SSB2) Error Contents A request of XP Continuous Access Journal Pairresync was received. However, the command was rejected because the state of journal group was not Stop. EA1B A request of XP Continuous Access Journal Pairresync (suspend transition mode) was received.
Table 45 Error Codes and Error Contents When Operating RAID Manager (continued) Error Code (SSB1) Error Code (SSB2) Error Contents In the intermediate site in the cascading configuration combining three XP Continuous Access Journal sites, a request of XP Continuous Access Journal pair delete and suspend was received. However, since the journal group status of the mirror combined with a mirror in the specified journal group was Active, the command was rejected.
Table 45 Error Codes and Error Contents When Operating RAID Manager (continued) Error Code (SSB1) Error Code (SSB2) Error Contents In the configuration where three XP Continuous Access Journal sites are combined, a request of XP Continuous Access Journal pair resync (journal resync mode) was received, but since the specified option was wrong, the command was rejected. EAD0 A request of XP Continuous Access Journal Paircreate (journal suspend mode) was received.
Table 45 Error Codes and Error Contents When Operating RAID Manager (continued) Error Code (SSB1) Error Code (SSB2) Error Contents The specified XP Continuous Access Journal pair cannot execute the takeover because the specified XP Continuous Access Journal pair belongs to the journal group that dedicated XP Continuous Access Journal and XP Continuous Access combination (2DC configuration).
Table 45 Error Codes and Error Contents When Operating RAID Manager (continued) Error Code (SSB1) Error Code (SSB2) Error Contents A request of XP Continuous Access Journal Paircreate was received. However, the command was rejected because the path between the primary and the secondary storage systems was not valid. EB62 A request of XP Continuous Access Journal Paircreate was received. However, the command was rejected because the specified P-VOL was a command device.
Table 45 Error Codes and Error Contents When Operating RAID Manager (continued) Error Code (SSB1) Error Code (SSB2) EB88 Error Contents The XP Continuous Access Journal pair was not created because the specified S-VOL was in one of the following statuses: • The specified S-VOL was being used as the XP Business Copy S-VOL. • The specified S-VOL was Not Ready, which means that the hard disk drive cannot be used. EB89 A request of XP Continuous Access Journal Paircreate was received.
Table 45 Error Codes and Error Contents When Operating RAID Manager (continued) Error Code (SSB1) Error Code (SSB2) Error Contents The XP Continuous Access Journal Pairresync (journal resync mode that forcibly copies all data) was received because of the XP Continuous Access Journal Pairresync (journal resync mode) failed. The command was rejected because the XP Continuous Access Journal pair was not in the HOLD status. EBD9 A request of XP Continuous Access Journal Paircreate was received.
processing. Each time a SIM is generated, the amber Message LED on the control window (under the Ready and Alarm LEDs) turns on as an additional alert for the user. SIMs are classified into four categories according to severity for reporting and logging purposes: service, moderate, serious, or acute. All SIMs are recorded on the SVP and displayed on Remote Web Console computers. You can review the SIMs in the Status window of Remote Web Console.
Table 46 Typical SIMs Showing the Reference Code and SIM Type (continued) Reference Code Severity Description Byte 22 Byte 23 DC 4X Serious SIM Generated By A volume being used by the primary data Primary storage volume has been suspended. system SVP Log File SIM Log A data volume pair has been suspended at the secondary storage system. DC 5X Serious A volume being used by the primary data Primary storage volume has been suspended.
11 Support and Other Resources Related Documentation • HP StorageWorks RAID Manager User Guide • HP StorageWorks XP24000/XP20000 Data Retention Utility User Guide • HP StorageWorks XP24000/XP20000 LUN Expansion User Guide • HP StorageWorks XP24000/XP20000 Performance Monitor User Guide • HP StorageWorks XP24000/XP20000 Auto LUN Software User Guide • HP StorageWorks XP24000/XP20000 Performance Control User Guide • HP StorageWorks XP24000/XP20000 Business Copy Software User Guide • Hitachi Shad
HP Technical Support For worldwide technical support information, see the HP support website: http://www.hp.com/support Before contacting HP, collect the following information: • Product model names and numbers • Technical support registration number (if applicable) • Product serial numbers • Error messages • Operating system type and revision level • Detailed questions Subscription Service HP recommends that you register your product at the Subscriber’s Choice for Business website: http://www.
Glossary C CU Control unit. D DC Data center. Configurations can be either 2DC (two data centers) or 3DC (one primary and two secondary data centers). DKC Disk controller. E ESCON Enterprise systems connection An optical interface used to connect the mainframe to the control unit; a predecessor to FICON. H HBA Host bus adapter. J JNL Journal. L LCP Local control port. LUN Logical unit (also called device emulation or device type). M MCU Main control unit. N NVS Nonvolatile storage.
SIM Service information message. SMPL Simplex. SSID Subsystem identifier; storage system identifier. SVP Service processor. A computer built into a disk array. The SVP, used only by an HP service representative, provides a direct interface to the disk array. sync See . V VOL, vol Volume.
Index C components, 13 control units (CUs), 15 conventions storage capacity values, 244 D database recovery, 205 disaster recovery, 205 preparing for, 205 document related documentation, 244 documentation HP website, 244 providing feedback, 245 F file recovery, 205 H help obtaining, 245 HP technical support, 245 N no volumes, 91 P pinned track, 197, 198 point-in-time copy (PiT), 197 power off/on requirements, 155 primary site update, 90 R read and write I/O operations, 23 related documentation, 244 S