HP XP P9000 Business Copy for Mainframe Systems User Guide Abstract This guide explains how to use HP XP P9000 Business Copy for Mainframe Software to create nondisruptive, high-speed internal copies of information stored by open-systems hosts on HP XP P9000 disk arrays and attached heterogeneous external storage systems. Topics include how to create, split, suspend, resynchronize, and troubleshoot Business Copy pairs using the Remote Web Console web client.
© Copyright 2010, 2013 Hewlett-Packard Development Company, L.P. Confidential computer software. Valid license from HP required for possession, use or copying. Consistent with FAR 12.211 and 12.212, Commercial Computer Software, Computer Software Documentation, and Technical Data for Commercial Items are licensed to the U.S. Government under vendor's standard commercial license. The information contained herein is subject to change without notice.
Contents 1 Business Copy Z overview...........................................................................7 How Business Copy Z works......................................................................................................7 Hardware and software components...........................................................................................7 Volume pairs (primary volumes and secondary volumes)...........................................................8 Remote Web Console GUI...........
Reserving a consistency group..................................................................................................35 System options that affect performance......................................................................................35 Setting performance options................................................................................................36 5 Performing pair operations........................................................................37 Pair operations workflow.
HP websites......................................................................................................................68 Conventions for storage capacity values....................................................................................68 Typographic conventions.........................................................................................................68 A Pair operations using PPRC........................................................................
Edit Mirror Units dialog box...................................................................................................117 Change Options dialog box..................................................................................................117 Add Reserve Volumes Wizard................................................................................................118 Add Reserve Volumes window...........................................................................................
1 Business Copy Z overview Business Copy Z (BC Z) uses local mirroring technology to create and maintain a full copy of any volume in the storage system. With BC Z software you can create one or more copies of a data volume within the same storage system. You can use BC Z copies as backups, with secondary host applications, for data mining, for testing, and other uses — while business operations continue without stopping host application I/O to the production volume.
Volume pairs (primary volumes and secondary volumes) A pair consists of the P-VOL and secondary data volume. Each P-VOL can be paired with up to three S-VOLs. Thus, you can create three pairs using one P-VOL. During most operations, the P-VOL remains available to the host for I/O operations. Updating the P-VOL regularly copies the new data, the differential data, to the S-VOL. Because S-VOLs are updated asynchronously, the P-VOL and S-VOLs may not be identical.
Initial and update copy operations Creating a pair causes the storage system to create an initial copy. The storage system asynchronously copies updates received by the P-VOL to the S-VOL. Initial copy Creating a pair causes the storage system to start the initial copy and copies all the data in the P-VOL to the S-VOL. Before the pair is created, the pair’s status is SMPL. While the initial copy is in progress, the status is PENDING.
Though the volumes are paired (DUPLEX status), data in the P-VOL and S-VOLs may not be the same because update copying occurs asynchronously, and therefore later data exists in the P-VOL. You can ensure that P-VOL and S-VOLs data are the same at a certain point in time, by splitting pair. Also, data in the P-VOL and the data in the S-VOL may not be the same if a copy operation is completed without host I/O. As mentioned above, the P-VOL and S-VOLs can be made the same by splitting the pair.
2 Requirements and planning This chapter describes system requirements and recommendations for planning a BC Z system. System requirements The following table shows minimum requirements for BC Z. Item Requirement BC Z license capacity Based on purchased capacity. For more information, see “License capacity requirements” (page 15). License key Must be installed. For more information about installation, see the HP XP P9000 Remote Web Console User Guide.
Item Requirement Pair volumes • Number of P-VOLs per S-VOL: one • Number of S-VOLs per P-VOL: one to three • Volume Capacity: P-VOL and S-VOLs must have the same capacity. • Supported emulation types—See “Supported emulation types for pair volumes” (page 12). • Supported volume types: - Internal system volumes. - External volumes. External Storage (Ext Stor) license required. - Custom-sized volumes. Virtual LVI required. Pair volumes must have same capacity and emulation type.
The following table shows the combinations that you can use to create BC Z pairs.
P-VOL S-VOL 3390-3/3R • 3390-3/3R • 3390-3A • 3390-3B • 3390-3C 3390-3A • 3390-3/3R • 3390-3A 3390-3B • 3390-3/3R • 3390-3B 3390-3C • 3390-3/3R • 3390-3C 3390-9 • 3390-9 • 3390-9A • 3390-9B • 3390-9C 3390-9A • 3390-9 • 3390-9A 3390-9B • 3390-9 • 3390-9B 3390-9C • 3390-9 • 3390-9C 3390-L • 3390-L • 3390-LA • 3390-LB • 3390-LC 3390-LA • 3390-L • 3390-LA 3390-LB • 3390-L • 3390-LB 3390-LC • 3390-L • 3390-LC 3390-M • 3390-M • 3390-MA • 3390-MB • 3390-MC 3390-MA • 3390-M • 3390-MA 3
P-VOL S-VOL • 3390-MB 3390-MC • 3390-M • 3390-MA 3390-A 3390-A 3390-V None supported Note: Combinations not listed are not supported. License capacity requirements The total capacity of pair volumes must be less than the maximum volume capacity licensed to you. After operations begin, you should be aware of capacity requirements in order to keep volumes’ total size within purchased capacity. • P-VOLs, S-VOLs, and volumes are reserved for use as S-VOLs must have licensed capacity.
The following table shows the number of differential and pair tables and the number of volumes allowed per additional shared memory. The maximum number of pairs is half the number of volumes shown, when P-VOLs and S-VOLs are in a one-to-one relationship. For example, if additional shared memory is not installed, since the number of volumes is 16,384, then the number of pairs you can create is 8,192. This example assumes one S-VOL per P-VOL.
Round up the total number to the nearest whole number. For example, if the emulation type is 3390-3 and if the number of the cylinders of the volume is 3390, then the total number of the differential tables is calculated as follows: ((3,339 +6) x 15) ÷ 20,448 = 2.4537. Rounding up 2.4537 to the nearest whole number changes it to 3. In this example, the total number of the differential tables for one pair is 3.
Planning for performance Pair operations affect I/O performance on the storage system. The following information is provided to help calibrate your system: • • • Performance versus number of pairs. Compare the importance of performance with the number of pairs and copy pace (rate at which data is copied). ◦ Assigning multiple S-VOLs to a P-VOL uses more system resources and lowers performance.
The following is a list of requirements and restrictions: • BCM is required to run this and all operations on the pairs in the consistency group. If you have performed pair operations using the RWC after creating pairs using BCM, you cannot use At-Time Split. With PPRC, you can split the pairs in a consistency group but not at a specified time. For more information about splitting pairs, see “Pair operations using PPRC” (page 70).
The following takes place when you run At-Time Split with shared Cnt Ac-J Z volumes: 1. Cnt Ac-J Z restore journal data created before the split time is restored to Cnt Ac-J Z S-VOLs (BC Z P-VOLs). 2. Restore journal operations are suspended when Cnt Ac-J Z detects restore journal data with a time stamp later than the split time. After the Cnt Ac-J Z suspension, the BC Z split operations run. 3. When BC Z split operations are completed, Cnt Ac-J Z resumes the suspended restore journal operations.
Requirements, restrictions, and recommendations for shared volumes The following is a list of the requirements, restrictions, and recommendations for using the At-Time Split with shared Cnt Ac-S Z or Cnt Ac-J Z volumes: • BCM is required. • You must share the BC Z P-VOLs with the Cnt Ac-J Z or Cnt Ac-S Z S-VOLs. • The BC Z pairs must be registered in the same BC Z consistency group to ensure consistent backup operations.
For more information, see the Business Continuity Manager User Guide. • With Cnt Ac-J Z, you can delete pairs when split time is set for an BC Z consistency group. The specified split time is deleted when you delete the following pairs: ◦ All BC Z pairs belonging to the BC Z consistency group. ◦ All Cnt Ac-J Z pairs belonging to the Cnt Ac-J Z restore journal.
The following are examples of when you can perform At-Time Split based on status of the BC Z pairs in the consistency group: • Example 1 The are six BC Z pairs in a consistency group. Two of the pairs are paired (“DUPLEX” status), two are in “PENDING” status, and two are in “Split/SUSPOP” status. In this case, you can perform At-Time Split, and doing so changes the status of all of the pairs in the consistency group to “Split/SUSPOP”.
3 Sharing Business Copy Z volumes You can share BC Z volumes with other HP software product volumes. This chapter discusses requirements, recommendations, and restrictions for sharing volumes. Cache Residency You can use volumes with Cache Residency settings as BC Z P-VOLs and S-VOLs. NOTE: For important information about the operation and volumes with Cache Residency settings, see the bullet on Quick Restore in “Planning for performance” (page 18).
Thin Provisioning Z and Smart Tiers Z You can use Thin Provisioning Z (THP Z) and Smart Tiers Z (Smart Z) volumes as BC Z P-VOLs and S-VOLs. THP Z and Smart Z volumes can be used as BC Z reserved volumes. The following restrictions apply: • THP Z and Smart Z volumes should be used for both the BC Z P-VOL and S-VOLs, rather than one or the other. • If you create a THP Z or Smart Z volume with only the P-VOL, or only the S-VOL, you cannot perform the Quick Restore operation.
Continuous Access Journal Z You can share Cnt Ac-J Z volumes with BC Z volumes. • You can share BC Z P-VOLs with Cnt Ac-J Z P-VOLs and S-VOLs. • You cannot share BC Z S-VOLs with Cnt Ac-J Z S-VOLs. • You cannot share BC Z pair volumes with Cnt Ac-J Z journal volumes. • You cannot perform the Quick Restore operation on the BC Z pair when the Cnt Ac-J Z pair is suspended. • You can use PPRC to query pair status for BC Z and Cnt Ac-J Z shared volumes.
Figure 1 BC Z volumes in a 3-Cnt Ac-J Z DC multi-target configuration In these configurations, BC Z pair operations are dependent on the pair status of the Cnt Ac-J Z local-intermediate pair and the local-remote pair. The following table shows the supported BC Z operations when the P-VOL is shared with Cnt Ac-J Z P-VOL. Cnt Ac-J Z local-intermed. pair status Cnt Ac-J Z intermed.
The following table shows the supported BC Z operations when the P-VOL is shared with Cnt Ac-J Z S-VOL (intermediate or remote site). Cnt Ac-J Z* pair status BC Z operations Create, Split, Suspend, Delete, Resync -- Reverse Copy, Quick Restore Resync--Normal Copy, Quick Resync DUPLEX or PENDING YES NO Suspend/SSWS YES YES * Note: • If the BC Z P-VOL is shared with the intermediate site’s Cnt Ac-J Z S-VOL, then check Cnt Ac-J Z status for the local-intermediate pair.
The following table shows the BC Z operations that you can perform when the S-VOL is shared with Cnt Ac-J Z P-VOL at local site. Cnt Ac-J Z local-intermed. pair status BC Z operations Pair create Pair split Suspend, Delete Resync - all types DUPLEX NO NO YES NO PENDING NO NO YES NO Suspend/SSWS NO YES YES YES The following table shows the BC Z operations that you can perform when the P-VOL is shared with Cnt Ac-J Z S-VOL/P-VOL at intermediate site. Cnt Ac-J Z local-intermed.
The BC Z operations that you can perform depend on the pair status of the other pairs. The following tables show the supported operations. Table 3 BC Z operations at the intermediate site Cnt Ac-S Z local-intermed.
Figure 3 Cnt Ac-J Z, Cnt Ac-S Z, and BC Z Shared Volume Configuration 1 Figure 4 Cnt Ac-J Z, Cnt Ac-S Z, and BC Z Shared Volume Configuration 2 You can perform all BC Z operations, with the following exceptions, in the intermediate site, irrespective of Cnt Ac-S Z pair status. The Cnt Ac-J Z delta resync pair’s status must be HOLD or HLDE: • You can perform Reverse Copy only when the Cnt Ac-S Z and Cnt Ac-J Z pair status is Suspended. • You cannot perform the Quick Restore.
Virtual LVI You can assign Virtual LVI volumes to BC Z pairs, provided that the T-VOL has the same capacity as the S-VOL. Auto LUN You can assign the following BC Z volumes to Auto LUN migration volumes: • L1 P-VOL with up to two S-VOLs. • L2 P-VOL with one S-VOL. • Reserved volumes. To assign or reserve BC Z volumes to Auto LUN migration volumes, complete the following: 1. Delete the BC Z pairs. 2. Unreserve the reserved BC Z S-VOLs. 3. Assign the BC Z volumes to Auto LUN migration volumes.
Table 5 Volume access attribute and BC Z pair operations Volume access attributes specified for the BC Z pair BC Z operations P-VOL S-VOL Create, Split, Suspend, Resync (forward) Resync (reverse) Delete Read/Write Read/Write or Read Only YES YES YES Protect NO NO YES Read/Write or Read Only YES YES YES Protect NO NO YES Read/Write, Read Only, or Protect NO NO YES Read Only Protect Table 6 Access attributes and BC Z reserve attribute change operations Volume access attributes sp
4 Performing configuration operations This chapter provides instructions for configuring BC Z. Configuration workflow Setup for BC Z consists of the following operations. You must have Storage Administrator (Local Copy) role to perform BC Z operations. • “Setting up primary and secondary volumes” (page 34). • “Reserving secondary volumes” (page 34). (Optional.) • “Reserving a consistency group” (page 35). (Optional.) • “System options that affect performance” (page 35). (Optional.
Related information • “Removing reserve attribute from a volume” (page 55) Reserving a consistency group A consistency group number is required when assigning pairs to a consistency group. Once you have assigned pairs to a consistency group, you can perform pair operations on the pairs in the group, including At-Time Split. Prerequisite information • 1. 2. 3. 4. 5. The consistency group must be created before reserving it, using BCM.
NOTE: • Your service representative must enable the Copy Threshold option. Copy Pace options. Reduce the effect on host I/O performance by suppressing copy processing in DUPLEX status. The system uses this option when pairs are in DUPLEX status only. This option does not have an effect if the pair is in other statuses. You can choose from three levels of processing-suppression/performance-improvement: ◦ Copy Pace Ext. None (usable since program version 70-03-01-xx/xx).
5 Performing pair operations This chapter provides instructions for performing BC Z pair operations using RWC. Also included is an operation for splitting pairs by consistency group, using RAID Manager. Pair operations workflow A typical workflow for performing pair operations consists of the following. You must have Storage Administrator (Local Copy) role to perform BC Z operations. • “Check pair status” (page 37). Each operation requires a pair to have a specific status.
• If the P-VOL is already paired with other S-VOLs, before creating the new pair, check the permitted status of existing S-VOLs. For more information, see “Status of unaffected S-VOLs, operations permitted ” (page 52). • Because pair creation affects performance on the host, observe the following: ◦ Create a pair when I/O load is light. ◦ Limit the number of pairs that you create simultaneously.
Use 1. 2. 3. 4. the following workflow: In the Pair Configuration window, set Number of Secondary Volumes at 2. In the Select Primary Volume window, select two LDEVs as P-VOLs. In the Select Secondary Volumes window, select 3 LDEVs from the Available LDEVs table as the S-VOL. In the Selected Pairs table, delete the unwanted row by selecting it and clicking Remove. Creating pairs 1. 2. 3. In the tree, click Replications > Local Replications. In the Pairs tab, click Create Pairs.
speed and better performance with Slower, faster speed but more impact to performance with Faster. 9. Click Next. 10. In the Select Primary Volumes window, in the Available LDEVs table, select an LDEV to be a P-VOL, then click Add. The LDEV is moved to the Selected LDEVs table. You can make multiple selections. 11. Click Next. 12. In the Select Secondary Volumes window, assign LDEVs as S-VOL to the P-VOL LDEV (or LDEVs) selected in the Select Primary Volumes window.
• To sort the Available LDEVs and Selected Pairs tables according to the capacity, click Capacity near the top of the window. • The remaining number you have to select refers to the P-VOLs that do not have an assigned S-VOL, as seen in the Selected Pairs table. • Sort in the middle-left allows you to sort the Selected Pairs table. • Change Options in the middle-right allows you to change Split Type and Copy Pace (applies to all new pairs). • To change MU numbers, complete the following: a.
3. In the Suspend Pairs window, type a Task Name and click Apply. Pair split Host updates to the P-VOL and periodic copying to the S-VOL continue until the pair is split. After the pair is split, updates continue to the P-VOL but are not copied to the S-VOL; data in the S-VOL is ensured at the time of the split. Update data that accrues during the split is stored in differential bitmaps until it is copied to the S-VOL during resynchronization.
Prerequisite information for splitting pairs • Pair status must be one of the following: ◦ DUPLEX, or PENDING, when splitting an existing pair. ◦ SIMPLEX, when creating and immediately splitting a pair. • The P-VOL and S-VOL are synchronized when pair status changes from SP-Pend/TRANS or V-Split/SUSPVS to Split/SUSPOP. • To ensure that the data in the P-VOL matches data in the S-VOL after the pair split, stop write operations from the host server to the P-VOL before running the operation.
4. In Copy Pace, select the pace at which data is to be copied. Values: Slower, Medium, or Faster. Processing speed and system performance are affected by the pace you select; you see slower speed and better performance with Slower, faster speed but more impact to performance with Faster. 5. 6. Click Finish. In the Confirm window, type a Task Name then click Apply.
Pair resynchronization You resynchronize a pair that is split or suspended by the system. Resynchronizing updates the S-VOL so that it is again paired with the P-VOL. CAUTION: Resynchronizing the pair does not guarantee that P-VOL data is the same as S-VOL data. Data in the two volumes is the same only if the P-VOL is offline and the pair has been split and is in Split/SUSPOP status.
- Business Copy Z (BC Z) pair when the P-VOL is shared with an FC Z/FCSE volume • Quick Restore, P-VOL and S-VOL are swapped. NO data is copied, and the pair is placed in DUPLEX status. Differential data is copied to the S-VOL during update copy operations. ◦ Differential data is copied during update copying. ◦ The P-VOL and S-VOL are inaccessible during this operation. When the operation completes, the P-VOL is accessible.
3. In the Resync Pairs window, select a Resync Type. For more information, see “Types of resync operations” (page 45). 4. Select a Copy Pace, which is the rate that data is to be copied. Values: Slower, Medium, or Faster. Processing speed and system performance are affected by the pace you select; you see slower speed and better performance with Slower, faster speed but more impact to performance with Faster. 5. 6. Click Finish. In the Confirm window, enter a Task Name and click Apply.
Prerequisite information for deleting pairs • The P-VOL and S-VOL must be synchronized. Before deleting, wait until all write I/O operations to the P-VOL are completed, set the P-VOL offline, then split the pair. • Pair deletion cannot be performed when the pair status is V-Split/SUSPVS. • When a pair is created, the processor blade allocated to the P-VOL's LDEV is also allocated to the S-VOL's LDEV.
6 Monitoring and maintaining the system This chapter provides information and instructions for monitoring and maintaining the BC Z system. Monitoring the system Monitoring helps you keep track of pairs and volumes and their current and past conditions. Monitoring should be an ongoing activity. This section provides information for the following: • “Monitoring pair activity, status ” (page 49). Status definitions and permitted operations for each status are included.
Pair status definitions Pair status descriptions are provided in the following table. Click Refresh View for the most current data. The RWC status names shown here are also used in BCM. Status Description Host status P-VOL access S-VOL access SIMPLEX The volume is not assigned to a pair. The storage system accepts read/write for volumes that are not reserved. S-VOL = SIMPLEX N/A N/A TVOL = SIMPLEX NOTE: If the volume is in SIMPLEX status, the status is not shown In the RWC.
Status Description Host status P-VOL access S-VOL access Suspend/SUSPER The pair is suspended by the storage system. S-VOL = PPRI-PNDG Read/write-enabled Read/write-disabled The system continues accepting host updates T-VOL = to the P-VOL. Update copy operations are PSEC-PNDG stopped to the S-VOL. The system marks the entire P-VOL track map as differential data, meaning that the entire P-VOL is copied to the S-VOL when the suspended pair is resynchronized.
Oper. Pair status SIMPLEX Pend. DUPLEX SP-Pend /TRANS V-Split/SUSPVS Split/SUSPOP Resync/PENDING Resync-R/REVRSY Suspd./SUSPER Resync Pair (reverse) NO NO NO2 NO NO YES NO NO2 NO Delete Pair NO YES YES YES NO YES YES YES YES 1. With BCM, the command terminates normally but pair status does not change because resync processing is not performed. 2.
Clicking Refresh View shows the latest synchronous rate. If you close the window, information in the Local Replications window may not be the latest. Click Refresh View again. Related information • “View Pair Synchronous Rate window” (page 95) Monitoring consistency groups You can check the number of consistency groups and the details and individual properties for consistency groups. • View the number of consistency groups in the Summary section of the Local Replications window.
4. The Description column shows the operation that was run. The following table shows a list of the codes. Code Description Explanation 4710 DUPLEX START Initial copy began. 4720 DUPLEX END Initial copy completed and pair status changed to SIMPLEX. 4730 Split/SUSPOP START Pair split operation began. 4740 Split/SUSPOP END Pair split completed and pair status changed to Split/SUSPOP. 4750 SP-Pend/TRANS START Pair resync operation began.
Related information • “Removing reserve attribute from a volume” (page 55) • “Releasing a reserved consistency group” (page 55) • “Pair operations during system, device maintenance” (page 55)e Removing reserve attribute from a volume You can remove the reserve attribute from a volume. Prerequisite information • 1. 2. 3. 4. The volume is not assigned to a pair (SIMPLEX status). In the tree, click Replications > Local Replications. Click Reserve Volumes tab.
7 Troubleshooting This topic provides BC Z troubleshooting information. Business Copy Z Troubleshooting This section provides instructions for troubleshooting in BC Z. Operation and display troubleshooting The following table provides operation and display troubleshooting information for BC Z pairs. Error Corrective action RWC hangs, or BC Z operations do not function properly. • Make sure all BC Z requirements and restrictions are met. • Make sure the storage system is powered on and fully functional.
Service Information Messages (SIMs) The P9500 storage system generates a service information message (SIM) to notify users of events that have occurred in the storage system. SIMs can be generated by the storage system’s channel and storage path microprocessors or the service processor (SVP). The SVP reports all SIMs related to BC Z operations. The SIMs reported to the zSeries and S/390 host are logged in the SYS1.LOGREC dataset of the host operating system.
1. Do one of the following: • If you are using the RAID Manager-window log, locate the error code you are investigating. An example error code in the RAID Manager-window log is: It was rejected due to SKEY=0x05, ASC=0x20,SSB=0xB9E1,0xB901 on Serial#(64015) • If using the operation log file, locate the error code you are investigating. An example error code in the log file is: 11:06:03-37897-10413- SSB = 0xb9a0,2089 2. Locate the SSB1 and SSB2 codes.
Table 7 RAID Manager Error Codes (continued) SSB2 code Description 205B The pair operation was rejected for one of the following reasons: • An MU number already in use was specified. • MU number 0 was assigned to an L2 pair. 2060 The volume you specified as a P-VOL was a volume of a Cnt Ac-J pair. The pair operation was rejected because the status of the Cnt Ac-J pair was invalid. 2061 The volume you specified as an S-VOL was a volume of a Cnt Ac-J pair.
Table 7 RAID Manager Error Codes (continued) SSB2 code Description 2094 The volume you specified as a P-VOL was a Cnt Ac-S S-VOL. The Split operation was rejected because the consistency time of the consistency group is not equal to the consistency time of the Cnt Ac-S pair. 2097 The Quick Restore operation was rejected because of one of the following: • The P-VOL was also a Thin Provisioning V-VOL, but the S-VOL was a normal volume.
Table 7 RAID Manager Error Codes (continued) SSB2 code Description 20CA The emulation type of the S-VOL was 3390-A, and the pair operation was rejected for one of the following reasons: • Mainframe Fibre CHA was not mounted • Mainframe Fibre CHA was all blocked 20D0 The P-VOL rejected the paircreate operation because the THP pool is initializing in the Thin Provisioning or Smart Tiers V-VOL.
Table 7 RAID Manager Error Codes (continued) SSB2 code Description • The At-Time Split was rejected because some of the pairs in the consistency group were being resynchronized, split, or were already suspended. • The pair operation was rejected because the pair status of the P-VOL, the S-VOL, or both showed that the pair could not receive the issued command. 2312 The pair operation was rejected because the volume you specified as the S-VOL was online to the host.
Table 7 RAID Manager Error Codes (continued) SSB2 code Description 2337 The pair operation was rejected because the volume you specified as the P-VOL had already been an S-VOL. 233A The pairresync was rejected because the volume you specified as the P-VOL was not a BC Z P-VOL. 233B The pair operation was rejected because the volume you specified as the S-VOL was a root volume.
Table 7 RAID Manager Error Codes (continued) SSB2 code Description 235D The volume you specified as an S-VOL was a Cnt Ac-S P-VOL. The reverse copy or the Quick Restore operation was rejected because the Cnt Ac-S pair was not suspended (Suspend/SUSPER status) or split (Split/SUSPOP status). 236C The reverse copy or the Quick Restore operation was rejected because the volume you specified as the P-VOL has the S-VOL Disable attribute assigned by the Data Retention.
Table 7 RAID Manager Error Codes (continued) SSB2 code Description 23A8 The Quick Restore or reverse copy operation was rejected because the volume you specified as the volume was specified as the P-VOL for XRC. 23A9 The Quick Restore or reverse copy operation was rejected because the volume you specified as the volume was specified as the P-VOL for CC. 23AA The pair operation was rejected because the volume you specified as the S-VOL was specified as the P-VOL for XRC.
◦ The BC Z pair is in a status that does not allow the pairsplit operation. For more information, see “Monitoring pair activity, status ” (page 49). ◦ A BC Z pair volume is also used in a Cnt Ac-S (Cnt Ac-S) or Cnt Ac-J pair. The Cnt Ac-S or Cnt Ac-J pair is in a status that does not allow the pairsplit operation. After these factors are removed, perform the pairresync operation, and run the pairsplit command.
8 Support and other resources Contacting HP For worldwide technical support information, see the HP support website: http://www.hp.
In the Storage section, click Disk Storage Systems for hardware or Storage Software for software, and then select your product. HP websites For additional information, see the following HP websites: • http://www.hp.com • http://www.hp.com/go/storage • http://www.hp.com/service_locator • http://www.hp.com/support/manuals • http://www.hp.com/support/downloads • http://www.hp.
Table 8 Document conventions (continued) Convention Element Monospace text • File and directory names • System output • Code • Commands, their arguments, and argument values Monospace, italic text • Code variables • Command variables Monospace, bold text WARNING! CAUTION: IMPORTANT: NOTE: TIP: Emphasized monospace text Indicates that failure to follow directions could result in bodily harm or death. Indicates that failure to follow directions could result in damage to equipment or data.
A Pair operations using PPRC You can perform BC Z pair operations using TSO PPRC and ICKDSF PPRCOPY commands. PPRC requirements, commands, and examples are provided in this topic. However, all instructions for using the PPRC TSO and ICKDSF commands are not provided. For more information, see the IBM user documentation. Overview of PPRC commands supported by Business Copy Z You can perform most BC Z pair operations using PPRC, including the following: • Add pairs. • Add and split pairs.
Because BC Z and Cnt Ac-S Z support PPRC, a failure to meet these requirements could result in a PPRC command executed on a Cnt Ac-S Z pairs instead. Preparing the system with PSF and DEVSERV PSF commands (perform storage system function) enable PPRC commands and user requests in the storage system. The following table shows how PSF commands interact with BC Z pair. Table 9 How PSF commands operate with BC Z Item Interaction Device pair status See the following table.
Table 11 CESTPAIR parameters Parameter Value Description DEVN Device number NA PRIM Primary volume: SSID, serial number, channel connection address, and CU number. These parameters must be used for successful execution of the command. To request the Add and Split operation, set MSF00 instead of a serial number. This parameter is valid for MODE(COPY) or MODE(NOCOPY) only. To create pairs in a consistency group, set MAnn0 instead of a serial number. nn is a CTG ID.
Table 12 PPRCOPY ESTPAIR parameters (continued) Parameters PRI Value Description UNITADDRESS = ccuu = device number. name of the JCL statement which identifies the volume. Primary volume: SSID, serial number, channel connection address. These parameters must be used for successful execution of the command. To request the Add and Split operation, set MSF00 instead of a serial number. This parameter is valid for MODE(COPY) or MODE(NOCOPY) only.
Table 13 CSUSPEND parameters Parameter Value Description DEVN Device number NA PRIM Primary volume: SSID, serial number, channel connection address, and CU number. MPS00 is used for a Steady Split request. You can set MPS00 or MAnn0 instead of a serial number. nn is a CTG ID. MAnn0 is used for a Quick Split request on all pairs in a consistency group. Setting parameters other than the serial number, MPS00 or MAnn0, rejects the command.
SUSPEND example Resynchronizing pairs with CESTPAIR and PPRCOPY ESTPAIR Resynchronize pairs using the CESTPAIR and PPRCOPY ESTPAIR commands. • The commands are issued to the P-VOL. • The pair must be suspended (Split/SUSPOP or Suspend/SUSPER status). Parameters and examples are provided in the following. CESTPAIR (resynchronizing pairs The following table describes the CESTPAIR command parameters used to resynchronize pairs.
Table 15 CESTPAIR parameters (continued) Parameter Value Description ONLINSEC* YES You can Normal Copy whether the S-VOL is online or not. You can Reverse Copy whether the P-VOL and S-VOL are online or not. NO You cannot Normal Copy when the S-VOL is online. You cannot Reverse Copy when the P-VOL and S-VOL are online. * When you do not specify the parameter, the result is the same as when you specify NO for this parameter.
Table 16 PPRCOPY ESTPAIR parameters (resynchronizing pairs) (continued) Parameters Value Description MSGREQ YES NO Do not specify this parameter when MODE(RESYNC) is set, otherwise it ends abnormally (CC = 12). LSS P-VOL or S-VOL CU number. NA ONLINSEC* YES Forward pair resynchronization can be performed whether the S-VOL is online or not. Backward pair resynchronization can be performed whether the P-VOL and S-VOL are online or not.
Table 17 CDELPAIR parameters Parameter Value Description DEVN Device number NA PRIM Primary volume: SSID, serial number, channel connection address, and CU number. These parameters must be used for successful execution of the command. To delete all pairs in a consistency group, MAnn0 must be set. nn is the CTG ID. SEC Secondary volume: SSID, serial number, NA channel connection address, and CU number.
Setting up pairs in consistency groups 1. 2. 3. In the RWC, reserve a consistency group using the instructions in “Reserving a consistency group” (page 35) Using PPRC, create the pairs by running the CESTPAIR or PPRCOPY ESTPAIR command. In the RWC, in the CTG window, make sure that the pairs exist in the consistency group as expected. Splitting pairs in consistency groups 1. Run the CSUSPEND or the PPRCOPY SUSPEND command. The command splits all the pairs in the consistency group. NOTE: 2.
CQUERY example If the command is issued to the S-VOL in a consistency group, output for the SECONDARY serial number is shown in the following format: 00|S|@|000|30158 where: • S indicates that it belongs to a consistency group. • @ indicates the consistency group split operation. • 30158 is the serial number. PPRCOPY QUERY The following table shows the PPRCOPY QUERY command parameters used to show pair information.
QUERY example Output descriptions The following table shows the field descriptions of the output resulting when CQUERY TSO and QUERY ICKDSF commands are run. Table 21 Field descriptions for CQUERY TSO and the QUERY ICKDSF command output Field Description DEVICE Device number of the volume on which the CQUERY command is issued. LEVEL PRIMARY indicates that the volume is a P-VOL. SECONDARY indicates that the volume is a T-VOL. STATE Pair status PATH STATUS Invalid for BC; Active is shown.
Table 21 Field descriptions for CQUERY TSO and the QUERY ICKDSF command output (continued) Field Description PATHS Invalid for BC; 1 is shown. SAID DEST STATUS Invalid for BC; FFFF FFFF is shown. DESCRIPTION Invalid for BC; PATH ESTABLISH is shown. PERCENT OF COPY COMPLETE Invalid for BC; 100% is shown. SUBSYSTEM Invalid for BC, not valid content. WWN Invalid for BC, not valid content. LIC LEVEL Invalid for BC, not valid content.
B Interface support for BC Z operations and options This appendix lists BC Z operations and options, and consistency group operations and options, and the interfaces that support them.
Table 22 Operations by user interface (continued) Operation Options RWC RAID Manager BCM Command Option YES pairresync -c Normal Copy YES pairresync Quick Resync YES PPRC TSO command ICKDSF command YKRESYNC3 NO2 NO2 -fq normal YKRESYNC CESTPAIR PPRCOPY ESTPAIR pairresync -fq quick YKRESYNC CESTPAIR PPRCOPY ESTPAIR Reverse Copy YES pairresync -fq normal -restore YKRESYNC CESTPAIR PPRCOPY ESTPAIR Quick Restore YES pairresync -fq quick -restore YKRESYNC CESTPAIR PPR
Table 23 Consistency group operations by user interface (continued) Operation Option RWC RAID Manager BCM Command Option PPRC TSO command ICKDSF command User can specify CG number NO paircreate -m grp xx (xx = CTGID) YKMAKE CESTPAIR PPRCOPY ESTPAIR System allocates CG number NO paircreate -m grp (CTGID is omitted) NO NO NO No options NO NO NO YKSUSPND NO NO Steady Split NO NO NO YKSUSPND NO NO Quick Split NO NO NO YKSUSPND NO NO Steady Split NO when BC Z volumes sh
Table 23 Consistency group operations by user interface (continued) Operation Option RWC RAID Manager Command 1. 2. 3. 4. 5. 86 BCM Option Only Slow or Normal speeds can be selected. The default is Normal. Quick Split is used regardless of what you specify. Medium speed is used regardless of what you specify. You must use a RAID Manager pair group to run the command for the consistency group. Normal Resync is used regardless of what you specify.
C Business Copy Z GUI reference This appendix describes BC Z windows and dialog boxes In the RWC. Replications window Use this window to view pair information for local replication. Summary tab Item Description Licensed Capacity The used and licensed capacity of each product. Number of Replica LDEVs The number of LDEVs used for all local replication pairs. Number of FC Z/FCSE Relationships The number of relationships that Compatible FlashCopy and Compatible FlashCopy SE use.
Replica LDEVs tab Item Description LDEV ID The selected LDEV’s identifier LDEV Name The selected LDEV’s name Emulation Type The selected LDEV’s emulation type Capacity The selected LDEV’s capacity Copy Type Shows the following copy types: • BC-L1: BC L1 P-VOL or S-VOL • BC-L2: BC L2 P-VOL or S-VOL • FS: FS P-VOL or S-VOL • SS: SS P-VOL or S-VOL • BC Z: BC Z P-VOL or S-VOL • FC Z: Compatible FlashCopy relationship • FCSE: Compatible FlashCopy SE relationship Export button Click to open the dialo
Summary tab Item Description Number of Pairs The number of pairs for each local replication software type Number of Consistency Groups The number of consistency groups whose status is other than Free Number of Reserve Volumes The number of reserved volumes.
Item Description Snapshot Group (FS only.) The snapshot group name. If you have not set a snapshot group for FS pairs, this item is blank. For BC, BC Z, and SS, a hyphen (-) is shown. Status Shows the following icons and pair status names: (SIMPLEX and SMPL are not statuses that are shown In the RWC.) • The pair is being deleted. Status names are: BC, FS: SMPL(PD) BC Z: Deleting/TRANS • This icon is used for the following: The pair is being copied.
Item Description Status, continued • This icon is used for the following: The pair is split. Status names are: BC: PSUS BC Z: Split/SUSPOP The pair is being split in Quick Split mode. Status names are: BC: PSUS(SP)PSUS BC Z: V-Split/SUSPVS The pool is full. Status name is: FS, SS: PFUS • The pair is suspended. Status names are: BC: PSUE BC Z: Supend/SUSPER For more information, see “Pair status definitions” (page 50). Secondary Volume • LDEV ID: The S-VOL’s LDEV identifier.
Item Description Split Pairs button Click to open the Split Pairs window. Resync Pairs button Click to open the Resync Pairs window. View Pair Synchronous Rate* Opens the View Pair Synchronous Rate window. View Pair Properties* Opens the View Pair Properties window. Suspend Pairs* Opens the Suspend Pairs window. Delete Pairs* Opens the Delete Pairs window. Export* Opens the dialog box for downloading table information to a file. *An option you can choose from the More Actions menu.
Consistency Group tab Use this tab in the Local Replications window to view consistency group information for local replication, and to perform the following operations: • “Reserving a consistency group” (page 35) • “Releasing a reserved consistency group” (page 55) Item Description CTG ID The consistency group identifier. Click to open the Consistency Group Properties window. Status Possible values include: • BC Used: Consistency group used by BC.
Pair Properties tab Item Description Copy Type The type of pair: • Business Copy • Business Copy for Mainframe • Fast Snap • Snapshot Pool Name (ID) (FS and SS only.) The pool name and ID. If you have not set a pool name for FS pairs, this item is blank. For BC and BC Z, a hyphen (-) is shown. Most Recent Snapshot Date (FS and SS only.) The date and time that the most recent snapshot was acquired. If you have not set a most recent snapshot date for FS pairs, this item is blank.
Item Description The snapshot group name. If you have not set a snapshot group for FS pairs, this item is blank. For BC, BC Z and SS, a hyphen (-) is shown. Status The pair status. For more information, see “Pair status definitions” (page 50). Secondary Volume • LDEV ID: The S-VOL’s LDEV identifier. • LDEV name: The S-VOL’s LDEV name. • Emulation Type: The S-VOL’s emulation type. • Capacity: The S-VOL’s volume capacity. • CLPR: The S-VOL’s CLPR number.
Pairs table Item Description Primary Volume • LDEV ID: The P-VOL’s LDEV identifier. • LDEV Name: The P-VOL’s LDEV name. • CLPR: The P-VOL’s CLPR number. Copy Type Shows the following types of pairs: • BC-L1: BC L1 • BC-L2: BC L2 • FS: FS • SS: SS • BC Z: BC Z Snapshot Group (FS only.) The snapshot group name. If you have not set a snapshot group for FS pairs, this item is blank. For BC, BC Z and SS pairs, a hyphen (-) is shown. Status The pair status.
Item Description Mirror Unit The mirror unit number Refresh When clicked, updates the information in the Pairs table. View Histories window Use this window to review the operations that have been performed on pairs. You can view a maximum of 16,384 operation histories. For full information, see “Monitoring a pair’s operation history ” (page 53).
Histories table Item Description Date The operation date and time Primary Volume (Source Volume for FC Z/FCSE) • LDEV ID: The P-VOL/source volume’s LDEV identifier • Provisioning Type: The provisioning type. Values: - Basic: Internal volume - THP: THP V-VOL - External: External volume - External MF: Migration volume Secondary Volume (Target Volume for FC Z/FCSE) • LDEV ID: The secondary/target volume’s LDEV identifier. • Provisioning Type: The provisioning type.
Consistency Group Properties table Item Description CTG ID The consistency group identifier Status The consistency group status • BC Used: The consistency group is in use by BC. • BC Z Used (RAID Manager): The consistency group is used by BC Z and managed with RAID Manager. • BC Z Used (PPRC/BCM): The consistency group is used by BC Z and managed with PPRC/BCM. • FS Used: The consistency group is used by FS. • SS Used: The consistency group is used by SS.
Pairs table This table shows pairs for P-VOL and/or S-VOL to which you are allocated. Item Description Primary Volume • LDEV ID: The P-VOL’s LDEV identifier. • LDEV Name: The P-VOL’s LDEV name. • Emulation Type: The P-VOL’s emulation type. • Capacity: The P-VOL’s volume capacity. • CLPR: The P-VOL’s CLPR number. Copy Type Shows the following types of pairs: • BC-L1: BC L1 • BC-L2: BC L2 • FS: FS • SS: SS • BC Z: BC Z Snapshot Group (FS only.) The snapshot group name.
This wizard includes the following windows: • Select Pair Configuration window • Select Primary Volumes window • Select Secondary Volumes window • Confirm window For full information, see “Creating pairs” (page 39). Select Pair Configuration window Use this window to configure the pairs you will create. Item Description Copy Type The copy type. Values: Business Copy, Business Copy for Mainframe, FS, or Snapshot Emulation Type The emulation type. For FS or SS, you can only specify OPEN-V.
Item Description Use Primary Volumes of BC/SS Pairs (FS and SS only.) Indicates whether the P-VOLs are used. • Yes: Only FS and SS P-VOL LDEVs are shown in the Available LDEVs table. • No: Only unpaired LDEVs are shown in the Available LDEVs table. Port ID (BC/SS, FS, SS only.) The filters LDEVs in the Available LDEVs table according to the port ID. Host Group Name (BC/SS, FS, SS only.) The filters LDEVs in the Available LDEVs table according to host group name. Any is the default.
Item Description Number of Secondary Volumes The number of S-VOLs. (BC only) The number for an L1 pair does not include the number of L2 S-VOL. Primary Volumes (FS and SS only.) Information about the P-VOL when the LDEV is used as a S-VOL for an existing pair. Values: • LDEV ID: The LDEV identifier. • LDEV Name: The LDEV name. • Port ID: The port name of the LDEV’s LUN path. • Host Group Name: The host group name of the LDEV’s LUN path. • LUN ID: The LUN ID of the LDEV's LUN path.
Item Description CLPR The CLPR number Number of Secondary Volumes The number of S-VOL. (BC only) The number for an L1 pair does not include the number of L2 S-VOL. Primary Volume (FS and SS only.) The information about the P-VOL. Values: • LDEV ID: The P-VOL’s LDEV identifier: • LDEV Name: The P-VOL’s LDEV name. • Port ID: The port name of the P-VOL LDEV’s LUN path. • Host Group Name: The host group name of the P-VOL LDEV’s LUN path. • LUN ID: The LUN ID of the P-VOL LDEV's LUN path.
Item Description Exclude Paired Volumes (BC/SS only.) Select to hide the volumes that are already in a pair from the list. Default: Selected Port ID (BC/SS, FS, and SS only.) Filters LDEVs in the Available LDEVs table according to the port ID. Host Group Name (BC/SS, FS, and SS only.) Filters LDEVs in the Available LDEVs table according to host group name. Any is the default. Detail button Click to open the LDEV Properties window, which contains additional information for the selected LDEV.
Item Description Indicates whether LDEV is reserved as an S-VOL. Values: Yes or No Selected Pairs table Item Description Primary Volume The information about the P-VOL. • LDEV ID: The P-VOL’s LDEV identifier. • LDEV Name: The P-VOL’s LDEV name. • Port ID: The port name of the P-VOL LDEV’s LUN path. For BC Z, this item is blank. • Host Group Name: The host group name of the P-VOL LDEV’s LUN path. For BC Z, this item is blank. • LUN ID: The LUN ID of the P-VOL LDEV's LUN path.
Item Description The speed at which the split operation is performed. Values: Faster, Medium, Slower For FS and SS pairs, a hyphen (-) is shown. Pool Name (ID) (FS and SS only.) The pool name and ID number. For BC/SS and BC Z pairs, a hyphen (-) is shown. Confirm window Selected Pairs table Item Description Primary Volume • LDEV ID: The P-VOL’s LDEV identifier. • LDEV Name: The P-VOL’s LDEV name. • Emulation Type: The P-VOL’s emulation type. • Capacity: The P-VOL’s volume capacity.
Item Description Secondary Volume • LDEV ID: The S-VOL’s LDEV identifier. • LDEV Name: The S-VOL’s LDEV name. • Emulation Type: The S-VOL’s emulation type. • Capacity: The S-VOL’s volume capacity. • CLPR: The S-VOL’s CLPR number. Split Type (BC/SS and BC Z only.) • Non Split: Does not split the pair. • Quick Split: Splits the pair immediately • Steady Split: Splits the pair after all differential data is copied Copy Pace (BC/SS and BC Z only.) The speed at which the split operation is performed.
Selected Pairs table The same Selected Pairs table appears on the Confirm window and the Split Pairs window. Item Description Primary Volume • LDEV ID: P-VOL’s LDEV identifier • LDEV Name: P-VOL’s LDEV name • Emulation Type: P-VOL’s emulation type • Capacity: P-VOL’s volume capacity • CLPR: P-VOL’s CLPR number Copy Type Shows the following types of pairs: • BC-L1: BC/SS L1 • BC-L2: BC/SS L2 • FS: FS • SS: SS • BC Z: BC Z Snapshot Group (FS only.) The snapshot group name.
Item Description Secondary Volume • LDEV ID: S-VOL’s LDEV identifier • LDEV Name: S-VOL’s LDEV name • Emulation Type: S-VOL’s emulation type • Capacity: S-VOL’s volume capacity • CLPR: S-VOL’s CLPR number Pool Name (ID) (FS and SS only.) The pool name and ID number. For BC/SS and BC Z pairs, hyphen (-) is shown. Mirror Unit The mirror unit number Split Type list The split type.
Selected Pairs table Item Description Primary Volume • LDEV ID: The P-VOL’s LDEV identifier • LDEV Name: The P-VOL’s LDEV name • Emulation Type: The P-VOL’s emulation type • Capacity: The P-VOL’s volume capacity • CLPR: The P-VOL’s CLPR number Copy Type Shows the following types of pairs: • BC-L1: BC/SS L1 • BC-L2: BC/SS L2 • FS: FS • SS: SS • BC Z: BC Z Snapshot Group (FS only.) The snapshot group name. If you have not set a snapshot group for FS pairs, this item is blank.
For full information, see “Resynchronizing pairs” (page 46). Selected Pairs table Item Description Primary Volume • LDEV ID: The P-VOL’s LDEV identifier • LDEV Name: The P-VOL’s LDEV name • Emulation Type: The P-VOL’s emulation type • Capacity: The P-VOL’s volume capacity • CLPR: The P-VOL’s CLPR number Copy Type Shows the following types of pairs: • BC-L1: BC/SS L1 • BC-L2: BC/SS L2 • FS: FS • SS: SS • BC Z: BC Z Snapshot Group (FS only.) The snapshot group name.
Item Description Secondary Volume • LDEV ID: The S-VOL’s LDEV identifier • LDEV Name: The S-VOL’s LDEV name • Emulation Type: The S-VOL’s emulation type • Capacity: The S-VOL’s volume capacity • CLPR: The S-VOL’s CLPR number Snapshot Date (FS and SS only.) The date and time that a snapshot was acquired. For BC/SS and BC Z pairs, a hyphen (-) is shown. Pool Name (ID) (FS and SS only.) The pool name and identification number. For BC/SS and BC Z pairs, a hyphen (-) is shown.
Selected Pairs table Item Description Primary Volume • LDEV ID: The P-VOL’s LDEV identifier • LDEV Name: The P-VOL’s LDEV name • Emulation Type: The P-VOL’s emulation type • Capacity: The P-VOL’s volume capacity • CLPR: The P-VOL’s CLPR number Copy Type Shows the following types of pairs: • BC-L1: BC L1 • BC-L2: BC L2 • FS: FS • SS: SS • BC Z: BC Z Snapshot Group (FS only.) The snapshot group name. If you have not set a snapshot group for FS pairs, this item is blank.
Item Description For BC/SS and BC Z pairs, a hyphen (-) is shown. Mirror Unit The mirror unit number. Suspend Pairs window Use this window to suspend pair creation. For full information, see “Suspending pair creation” (page 41). Selected Pairs table Item Description Primary Volume • LDEV ID: The P-VOL’s LDEV identifier. • LDEV Name: The P-VOL’s LDEV name. • Emulation Type: The P-VOL’s emulation type. • Capacity: The P-VOL’s volume capacity. • CLPR: The P-VOL’s CLPR number.
Item Description Secondary Volume • LDEV ID: The S-VOL’s LDEV identifier. • LDEV Name: The S-VOL’s LDEV name. • Emulation Type: The S-VOL’s emulation type. • Capacity: The S-VOL’s volume capacity. • CLPR: The S-VOL’s CLPR number. Mirror Unit The mirror unit number. Delete Pairs window Use this window to delete pairs. For full information, see “Deleting pairs” (page 48). Selected Pairs table Item Description Primary Volume • LDEV ID: The P-VOL’s LDEV identifier. • LDEV Name: The P-VOL’s LDEV name.
Item Description For more information, see “Pair status definitions” (page 50). Secondary Volume • LDEV ID: The S-VOL’s LDEV identifier. • LDEV Name: The S-VOL’s LDEV name. • Emulation Type: The S-VOL’s emulation type. • Capacity: The S-VOL’s volume capacity. • CLPR: The S-VOL’s CLPR number. Snapshot Date (FS and SS only.) The date and time that a snapshot was acquired. For BC/SS and BC Z, a hyphen (-) is shown. Pool Name (ID) (FS and SS only.) The pool name and identification number.
Item Description Split Type • Non Split: Does not split the pair • Quick Split: Splits the pair immediately. Specify this if you want to have the S-VOL available for read and write I/O immediately after the pair split operation is issued. Any remaining differential data is copied to the S-VOL in the background. • Steady Split: After all differential data is copied, the pair is split. Default: Non Split Copy Pace (BC/SS and BC Z only.) The speed at which the split operation is performed.
Available LDEVs table Item Description LDEV ID The LDEV identification number. LDEV Name The LDEV name Emulation Type The emulation Type of each LDEV Capacity The capacity of each LDEV Number of Paths The number of paths to each LDEV Selected LDEVs table Item Description LDEV ID The selected reserved volume’s LDEV identifier.
For full information, see “Removing reserve attribute from a volume” (page 55). Selected Reserve Volumes table Item Description LDEV ID The selected reserved volume’s LDEV identifier LDEV Name The selected reserved volume’s LDEV name Emulation Type The selected reserved volume’s emulation type Capacity The selected reserved volume’s capacity Number of Paths The number of paths to each LDEV Reserve Consistency Groups wizard Use this wizard to reserve consistency groups for BC Z.
Available and Selected Consistency Groups tables Item Description CTG ID The consistency group’s identifier Confirm window Available and Selected Consistency Groups tables Item Description CTG ID The consistency group’s identifier. Status The consistency group’s status. Mainframe Reserved is a reserved mainframe consistency group’s status. Release Reserve Mainframe CTGs window Use this window to release a mainframe consistency group.
Selected Reserved Consistency Groups table Item Description CTG ID The consistency group’s identifier whose reserved status is to be released. Status The consistency group’s status. Value: Mainframe Reserved: A reserved mainframe consistency group’s status. Edit Local Replica Option wizard Use this wizard to enable and disable options that affect performance. Edit Local Replica Option window Use this window to specify options that affect performance.
BC Z/FC Z/FCSE System Options table Item Description System Option The options that you can change. Values: • Swap & Freeze • Host I/O Performance • FC Slower Copy1 (FC Z and FCSE only) • FC Slower Copy2 (FC Z and FCSE only) • Copy Pace Ext. Slower1 • Copy Pace Ext. Slower2 • Copy Pace Ext. None For more information, see “Setting performance options” (page 36). Status Shows whether the option is currently enabled or disabled. Enable button Click to enable the selected option.
D Configuration operations (secondary window) This appendix provides instructions for configuring BC Z using the previous RWC GUI, which opens in a secondary window. Configuration workflow Setup for BC Z consists of the following: 1. Ensuring that source and target volumes are set up correctly. 2. (Optional) Reserving volumes for use as T-VOLs. 3. Setting the HOST I/O Performance option, which boosts I/O performance, though copy time slows as a result. (Optional.
7. In the Set Reserve Attribute dialog box, confirm that the volumes you want to reserve are shown and selected, then click OK. The selected volumes are shown in the Preview list. 8. In the Pair Operations window, click Apply. Reserving a consistency group A consistency group number is required when assigning pairs to a consistency group. Once you have assigned pairs to a consistency group, you can perform pair operations on the pairs in the group, including At-Time Split. 1.
Setting performance options You can enable and disable the following options that affect performance. For descriptions of these options, see “System options that affect performance” (page 35). If you have both BC Z and BC pairs, HP recommends that you enable this option on both; otherwise host I/O response may not improve. 1. In the RWC, click Actions > Local Replications > BC Z/FC Z > Option. 2. 3. 126 Change to Modify mode by clicking the icon.
E Pair operations (secondary window) This appendix provides instructions for performing pair operations using the previous RWC GUI, which opens in a secondary window. Pair operations workflow A typical pair-operations workflow follows: • Check pair status. Each operation requires a pair to have a specific status. You also check pair status to ensure that an operation completed successfully. • Create the pair, in which the T-VOL becomes a duplicate of the S-VOL.
3. In the tree, in the Pair Operations window, select the CU image where the volumes to be S-VOLs are located. Related volumes are shown in the volume list. 4. 5. In the volume list, select the volumes that are the S-VOLs. Do not select reserved volumes. Right-click your selections and select Add Pair. 6. In the Add Pair dialog box, verify that the desired S-VOLs are shown in the pair list. To remove a volume, right-click and select Delete. Select the S-VOL that you want to pair.
15. In the Pair Operation window, review the information in the Preview list. To change a selection, right-click it, select Modify, and make your changes. 16. Click Apply to commit the pairs to the storage system. Splitting pairs, creating and splitting pairs Update copying continues until the pair is split. After the pair is split, updates continue to the S-VOL but not to the T-VOL; data in the T-VOL is ensured at the time of the split.
6. 7. 8. For Split Volume Pair, complete the following: 1. Ensure the pairs that you want to split are shown. 2. Select the volume that is not assigned to a pair (SIMPLEX status) that you want to be the S-VOL in an L1 pair-create-and-split operation. From Copy Pace, select the pace at which the pairs are to be split, Slower, Medium, or Faster. Copy Pace affects the host I/O performance: a slower pace minimizes impact, a faster pace has the greatest impact.
16. In the Pair Operation window, review the information in the Preview list. To change a selection, right-click it, select Modify, and make your changes. 17. Click Apply to commit the operation to the storage system. Splitting consistency group pairs with At-Time Split You can split the BC Z pairs in a consistency group at a specified time. This is done using At-Time Split. BCM is required to run the operation. With PPRC, you can split the pairs in a consistency group though without a specified time.
3. In the tree, in the Pair Operations window, select the CU image where the pairs or volumes are located. Related volumes are shown in the volume list. If a volume is already paired, pair information is also shown. 4. Select the pairs that you want to suspend (or the volumes whose pairs you want to suspend), right-click the selected pairs to show the menu, and select the Suspend Pair command to open the Suspend Volume Pair dialog box.
Resynchronizing pairs You resynchronize a pair that was split by a user or suspended by the storage system. Resynchronizing updates the T-VOL so that it is again paired with the S-VOL. CAUTION: Resynchronizing the pair does not guarantee that S-VOL data is the same as T-VOL data. Data in the two volumes is the same only when the pair is split. • • • • You can forward resync—from S-VOL to T-VOL—and reverse resync—from T-VOL to S-VOL.
• With a Quick Restore, RWC may show outdated information. Click Refresh View to ensure the most up-to-date information. • To keep the S-VOL and T-VOL unsynchronized when performing a Quick Restore, enable the Swap&Freeze option prior to performing the operation. Update copy operations are then suppressed when the Quick Restore is completed, and the pair is in DUPLEX status.
6. From Copy Pace, select the pace at which the pairs are to be resynchronized, Slower, Medium, or Faster. Copy Pace affects the host I/O performance: a slower pace minimizes impact, a faster pace has the greatest impact. The pace you select is applied for all pairs in the operation. 7. Click OK. 8. In the Pair Operation window, review the information in the Preview list. To change a selection, right-click it, select Modify, and make any changes. 9.
6. 7. 8. 9. 136 If you selected a pair that you do not want to delete, select the pair on the Delete Pair dialog box, right-click, then click Delete. The pair is removed from the deletion list. Click OK. In the Pair Operation, review the information in the Preview list. Click Apply to commit the operation to the storage system.
F Monitoring and maintaining the system (secondary window) This appendix provides information and instructions for monitoring and maintaining the BC Z system using the previous RWC GUI, which opens in a secondary window. Monitoring the system (secondary window) Monitoring helps you keep track of pairs and volumes and their current and past conditions. Monitoring should be an ongoing activity. This section provides information for monitoring the following: • Pair status. • Pair and pair volume details.
3. From the volume list, complete the following: 1. Select and right-click the volume or pair whose information you want to see. 2. From the menu, select Detail. The Detail dialog box opens. Field descriptions are provided in the following table. Field Description S-VOL Information The volume ID: Shows LUN information using LDKC number:CU number:LDEV number format. CLPR: Shows CLPR number:CLPR name. Volume Information Shows the volume’s emulation type and capacity.
Reviewing pair, license information You can check the current state of your pairs and licensed capacity. Do this using the Information dialog box. 1. In the RWC, click Actions > Local Replications > BC Z/FC Z > Pair Operation. 2. Complete the following: 1. Right-click the volume list, in any location. 2. From the menu, select Information. The Information dialog box opens. Field descriptions are provided in the following table.
Field Description The following software use pair tables: • BC Z • Compatible FlashCopy • Compatible FlashCopy SE • SS • Auto LUN Used Capacity (TB) Shows license information used by BC Z, and the total license capacity reserved for BC Z. Unlimited is shown when there is no limit on license capacity for BC Z. Reviewing a pair’s operation history You can review the operations that have been performed on a pair using the History window. 1.
3. To change the order in which items are listed, click a column title in the list. The list is sorted based on the items in the clicked column. • If there are more than 16,384 records of operations, the list is divided into multiple pages and only the list which is currently shown is sorted. • 4. If you click the same column title again, you can switch the sorting order (Ascending or Descending). If the information on the list is not updated, click File and then Refresh.
Field Description Status The pair’s current status T-VOL The T-VOL’s LDKC number:CU number:LDEV number Sync The percentage of synchronization between S-VOL and T-VOL Emulation The pair’s emulation type Capacity (Cyl) The volume capacity by number of cylinders CLPR(S) The S-VOL’s cache logical partition CLPR(T) The T-VOL’s cache logical partition Maintaining the system (secondary window) Some maintenance tasks are a response to behavior discovered during system monitoring.
5. Select the pairs from which you want to remove the attribute, then click OK. The selected volumes display in the Preview list. 6. 7. To change a selection, right-click, select Modify, and make your changes. When ready, on the Pair Operations window click Apply.
G Business Copy Z GUI reference (secondary window) This appendix describes the BC Z windows and dialog boxes in the previous version of the RWC GUI, which opens in a secondary window. Pair Operation window Use this window to view BC Z pairs.
Field Description If you select storage system on the top of the tree, a volume is not shown. Volume list Pair information. For more information, see “Volume list” (page 145). Note: S-VOLs and T-VOLs listed In the RWC may end in special symbols. An LDEV number that ends with a pound or gate symbol (#) indicates an external volume (for example, 00:00:01#). Icons Indicate the following information: S-VOL T-VOL Reserved volume. In Preview list, this is a preview item. Error. Is shown in Preview list.
Field Description T-VOL T-VOL information in XX:YY:ZZ format. • XX:YY:ZZ is the LDKC number:CU number:LDEV number TvolMode Indicates whether the T-VOL has been written to, and whether it can be read. • A hyphen (-) indicates that it has not been written to and can be read. • W indicates that it has been written to • N indicates that it cannot be read Copy Pace Indicates the speed that data is copied according to pair status.
Field Description CLPR (T) The T-VOL’s cache logical partition Error Code If you click Apply and then the operations in the Preview list fail, an error code indicates the cause of the error. Data in the status bar below the Preview list indicate the number of changes, the type of change (the operation), and any command options. Pair Operation command menu Right-click a volume or pair to open the pair operation command menu. The following table describes the commands that display in the menu.
The filter settings you select are effective in the current session only. They reset when you select another software product. Field Description CLPR The cache logical partition (CLPR) Volume Type The internal or external volumes are specified. Both boxes are selected by default. Clear the box you do not want. Attribute • Volume Attribute. If you select the Reserved check box, only reserved volumes display. Reserved volumes include volumes specified as T-VOLs. • Pair Attribute.
Table 24 Reference Codes Code Message Description 4710 DUPLEX START The initial copy started. 4720 DUPLEX END The initial copy ended, and the pair status changed to DUPLEX. 4730 SUSPOP START The pair split started. 4740 SUSPOP END The pair split ended, and the pair status changed to Split/SUSPOP. 4750 PENDING START Resynchronization of pairs started. REVRSY START 4760 PENDING END REVRSY END Resynchronization of pairs ended, and the pair status changed to DUPLEX.
CTG window Use this window to view information about consistency groups that are reserved in a mainframe storage system. Field Description CTG Tree Select to show consistency groups: • Storage system shows all the consistency groups. • Reserved shows only reserved consistency groups.
Field Description • Free shows only unreserved consistency groups. • Used shows only the consistency groups that are currently used (meaning those with registered pairs). CTG list • CTG: Consistency group number • Group Status: Shows one of the following consistency group statuses: - Used (RAID Manager): Consistency group is used and managed with RAID Manager. - Used (PPRC/BCM): Consistency group is used and managed with PPRC or BCM. - Reserved: Consistency group is reserved.
Glossary allocation The ratio of allocated storage capacity versus total capacity as a percentage. Allocated storage refers to those logical devices (LDEVs) that have paths assigned to them. Allocated storage capacity is the sum of the storage of these LDEVs. Total capacity is the sum of the capacity of all LDEVs on the disk array. BC P9000 or XP Business Copy. An HP application that provides volume-level, point-in-time copies in the disk array.
to be associated with 1 to 36 LDEVs. Essentially, LUSE makes it possible for applications to access a single large pool of storage. M-VOL Main volume. MCU Main control unit. OPEN-x A general term describing any of the supported OPEN emulation modes (for example, OPEN-E). There are two types of OPEN-x devices: legacy OPEN-x devices with a fixed size (such as OPEN-3, OPEN-8, OPEN-9, and OPEN-E), and OPEN-V, which has a variable size and is a CVS-based volume.
Index Symbols F 3 Cnt Ac-J Z data center, sharing volumes with, 26 3 data center, sharing volumes with, 29, 30 FlashCopy, 24 A BC, BC Z - role required to perform operations, 34 BCM, requirements for, 11 Business Continuity Manager, 23 help obtaining, 67 Histories window, 97 history of pair operations, viewing, 53 Host I/O Performance option, 35, 126 how Business Copy Z works, 7 HP Subscriber's choice web site, 67 technical support, 67 C L Cache Residency Manager, 24 calculating number of pairs, 15
and pair status, 51 and status of unaffected S-VOL, 52 pinned track, 56 planning to create pairs, 15 PPRC commands, 70 Preview list, 146 Q Quick Restore, 46 Quick Restore and performance, 18 quick resync, 45 Quick Split, 42 service locator website, 68 text symbols, 69 troubleshooting At-Time Split operation, 65 general, 56 TSO and ICKDSF commands, 70 types of pair split, 42 types of resync, 45 typographic conventions, 68 U update copy, 9 R V RAID level, 11 RAID Manager description, 8 error codes, 58 p