HP XP7 Business Copy User Guide Abstract This document provides instructions for setting up, planning, and operating Business Copy on the HP XP7 Storage (XP7) system.
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Contents 1 Business Copy overview..............................................................................6 Hardware and software components...........................................................................................6 Interface tools......................................................................................................................6 Remote Web Console......................................................................................................6 RAID Manager.....
System options that affect performance.................................................................................30 Enabling system options......................................................................................................31 5 Managing Business Copy pairs..................................................................34 Workflow for managing Business Copy pairs.............................................................................34 BC pair status checks....................
Pair user tasks during system and device maintenance............................................................74 7 Troubleshooting Business Copy...................................................................75 BC pair tasks and display troubleshooting.................................................................................75 Troubleshooting pinned tracks..................................................................................................75 Troubleshooting extended copy times.....
1 Business Copy overview Business Copy, also known as Business Copy (BC), uses local mirroring technology to create and maintain a full copy of a data volume within an HP XP7 Storage (XP7) system. You can use BC copies as backups, with secondary host applications, for data mining, for testing, as well as for other uses, while business operations continue without stopping host application input/output (I/O) to the production volume.
RWC communicates with the XP7’s service processor (SVP) over defined TCP/IP connections.RWC is LAN-attached to XP7. For more information about using RWC, see the HP XP7 Remote Web Console User Guide. RAID Manager RAID Manager is a tool that uses the command line interface to run commands that perform most of the same tasks you can do with the RWC. You run pair commands directly from the host or automate commands using scripts.
In cascaded pairs, the P-VOL for an L1 pair is a root volume and the S-VOL is a node volume. The P-VOL for an L2 pair is the S-VOL of an L1 pair, a node volume, and the S-VOL is a leaf volume. Initial and update copy operations Creating a pair initiates XP7 to start the initial copy. During the initial copy, the P-VOL remains available for read/write and can receive updates from the host.
NOTE: Data consistency is not ensured for BC pairs in “PAIR” status. For more information about ensuring data consistency, see “Workflow for ensuring data consistency” (page 47). The following image shows the initial copy operation. A P-VOL continues receiving updates from the host during the initial copy. Related topics • “BC pair creation” (page 34).
Related topics • 10 “Splitting BC pairs” (page 45).
2 Business Copy system requirements and planning This chapter describes system requirements and planning tasks for BC storage systems. Business Copy system requirements The following table shows minimum requirements for BC. Item Requirement BC license capacity Based on purchased capacity. For more information about license capacity requirements, see “BC licensed capacity and licensed capacity requirements” (page 12). License key Must be installed. RAID level RAID 1, RAID 5, RAID 6 RWC Required.
Item Requirement • Pool volumes • TSE volumes Maximum number of pairs Per XP7 storage system: 32,768 pairs (if you pair one S-VOL per P-VOL). Note: The maximum is dependent on the amount of installed shared memory. For more information about installed shared memory, see “Tables and installed shared memory” (page 13). For more information about planning how many pairs you will need for BC, see “Determining capacity of BC pairs in XP7 workflow” (page 12).
For more information about differential and pair tables, see “Differential and pair tables” (page 13). 2. Determine the maximum number of BC pairs that you can create on your storage system (see “Calculating the maximum number of BC pairs” (page 15)). Related topics • “Tables and installed shared memory” (page 13). • “Calculating the number of tables if you are sharing tables” (page 13). • “Software applications that use tables” (page 13).
• Use the following formula: The number of differential and pair tables your XP7 storage system needs =< (the total number of differential and pair tables in the XP7 storage system - the number of tables other software applications are using, such as Compatible FlashCopy) Calculating the number of tables for emulation types that are not OPEN-V You can calculate the number of differential and pair table you will need for a volume that has an emulation type other than OPEN-V. 1.
Determining the number of tables required for Business Copy You can query the number of differential tables that are required to create Business Copy (BC/SS) pairs. • Run the following RAID Manager command: inqraid For more information about running this command, see the HP XP7 RAID Manager User Guide. Determining the number of used tables in the storage system You can query the number of differential tables that are not used in the XP7 storage system.
3 x 10 + 577 x 20 = 11,570 <= 57,600 and 1 x 10 + 17 x 20 = 350 less-than-or-equal-to 8,192 Thus, you can create 10 BC pairs of OPEN-3 volumes and 20 BC pairs of OPEN V volumes. Quick Split and Steady Split performance planning The following dependencies affect the performance of pairs that are in the process of Quick Split (“PSUS(SP)/PSUS” status) or Steady Split (“COPY(SP)/COPY” status): • The system option mode (SOM) 459 is ON. • The S-VOL is an external or internal volume.
• ◦ If you plan to simultaneously perform multiple pair tasks, place the BC pairs in different parity groups. ◦ To perform a copy operation on multiple BC pairs in the same parity group, perform the operation on one pair at a time. If you plan to simultaneously use multiple software applications, make sure that your XP7 storage system is configured for optimal performance, such as sufficient cache. Concurrent use affects the performance and operation of the other software applications.
◦ About selecting a copy pace while splitting BC pairs, see “Splitting BC pairs” (page 48). ◦ About selecting a copy pace while resynchronizing BC pairs, see “Resynchronizing or restoring BC pairs” (page 55). Workflow for maximizing Quick Restore performance Use the following workflow to maximize the performance of restoring pairs using Quick Restore: 1. Set the same RAID level and HDD device type. For more information about HDD and HDD device types, see the HP XP7 Remote Web Console User Guide. 2.
The following images illustrate CG pair-split with Cnt Ac-J. When you perform a CG pair-split on shared Cnt Ac-J P-VOLs, the following operations occur: 1. Cnt Ac-J restores the journal data that was created before you restored the split time to Cnt Ac-J S-VOLs (BC P-VOLs).
NOTE: If a BC pair is suspended due to a failure, the split time and the actual task start time must be the same in order to restore Cnt Ac-J journal data that you created before the split time to the Cnt Ac-J/BC volume after the split. The task start time is determined by the amount of journal data in the journal volume at the time of the split. For example, if the journal volume contains data that needs one hour to be restored, the starting time of the split operation delays for an hour. 2. 3.
Guidelines If you are sharing BC P-VOLs with Cnt Ac-S or Cnt Ac-J S-VOLs, use the following guidelines when performing a CG pair-split: • Maintain a consistent backup of the BC S-VOLs. For more information about maintaining consistent backups of volumes, see “Workflow for maintaining consistent Business Copy secondary volume backups” (page 51). • Ensure that all BC pairs in the CG are in “PAIR” or “COPY(PD)/COPY”status.
The following are examples of when you can perform a CG pair-split based on status of the BC pairs in the CG: • Example 1 The are six BC pairs in a CG. Two of the pairs are paired (“PAIR” status), two are in “COPY(PD)/COPY” status, and two are in “PSUS” status. In this case, you can perform a CG pair-split, and doing so changes the status of all of the pairs in the CG to “PSUS”.
3 Sharing Business Copy volumes You can share BC volumes with other HP software application volumes. This chapter discusses the requirements, restrictions, and guidelines for sharing volumes. Sharing volumes with Cache Residency You can use volumes with Cache Residency settings as BC P-VOLs and S-VOLs. The Cache Residency settings can affect the performance of restoring pairs using Quick Restore.
Access attribute setting for existing pair volumes A pair’s status determines the access attributes you can set for existing P-VOLs or S-VOLs. Depending on the BC pair status, you may not be able to set access attributes for BC P-VOLs and S-VOLs from the Data Retention Utility. Access attribute settings also depend on whether you set Data Retention Utility access attributes using RWC or RAID Manager.
Volume specified by BC Attribute setting Pair status Volume Read/Write, Read Only, or Protect S-VOL Disable COPY(RS-R)/RCPY P-VOL or S-VOL YES NO PSUE P-VOL or S-VOL YES YES Sharing volumes with Thin Provisioning and Smart Tiers You can share BC P-VOLs and S-VOLs with THP and Smart Tiers (Smart) volumes. If you are using an THP volume as an BC P-VOL or S-VOL, the capacity of the THP pool allocated to the volume is added to the BC licensed capacity.
A host cannot access BC S-VOLs except when you split the pair. Sharing volumes with Resource Partition You can share BC P-VOLs and S-VOLs with Resource Partition by specifying them in a Resource Partition resource group. For more information about Resource Partition, see the HP XP7 Provisioning for Open Systems User Guide Prerequisite: The resource group must be assigned to a user group for which you have privileges. Sharing volumes with Fast Snap You can share BC/SS volumes with FS volumes.
BC task (RAID Manager command) Delete a pair (pairsplit -S) FS pair status COPY1 PAIR, PFUL PSUS, PFUS COPY2 RCPY PSUE YES YES YES YES YES YES 1. “COPY” status during an initial copy. 2. “COPY” status during resynchronization. 3. The snapshot data must be consistent with P-VOL data and ready to use in the BC task. For more information about ensuring the snapshot data is consistent with P-VOL data, see “Workflow for ensuring snapshot data is consistent with P-VOL data” (page 51).
For more information about the methods you can use to split pairs, see “Pair splitting methods” (page 46). • You can use BC cascaded pairs as Cnt Ac-S pairs. Cnt Ac-S does not distinguish between node and leaf volumes in cascaded pairs. Both are considered S-VOLs. For more information about cascaded pairs, see “Cascaded pairs” (page 7). • If you plan to Quick Restore the BC pair, you must first suspend the Cnt Ac-S pair.
1. 2. 3. If you are assigning BC volumes other than the ones you can assign to volumes reserved for Auto LUN, delete the BC pair. Otherwise, skip this step. Complete one of the following: • Assign the BC volumes to a volume reserved for Auto LUN. • Migrate the volumes. If you assigned the BC volumes to a volume reserved for Auto LUN, complete the following: a. Release the pair volumes from the volume reserved for Auto LUN. b. Perform BC pair tasks.
4 Configuring Business Copy This chapter provides instructions for configuring BC. Workflow for setting up Business Copy Set up BC before you create the copy pair. Use the following workflow to set up BC: 1. Prepare the volumes for BC (see “Preparing volumes for BC” (page 30)). 2. (Optional) Enable the system options (see “Enabling system options” (page 31)). Preparing volumes for BC You must set up and prepare the P-VOLs and S-VOLs for BC pairing before creating BC pairs.
• Copy Threshold. (For BC/SS, BC Z, Compatible FlashCopy, FS, and Auto LUN) Enable this system option to temporarily suppress copy operations when the XP7 storage system’s workload is heavy and to maximize host I/O performance during peak periods. NOTE: • A service representative must enable this system option. Copy Pace. Enable this system option to determine the rate at which the XP7 storage system copies data, to suppress copy processing, and to maximize host server I/O performance.
1. In the RWC main window, in the resource tree, click Replication. 2. In the Replication window, click Edit Options > Local Replication. 3. In the Edit Local Replica Options window of the Edit Local Replica Options wizard, complete the following and then click Finish: • For System Type, ensure Open is selected. Default: Open • 32 From the BC/FS System Options table, select the system option you want to enable, click Enable.
4. In the Confirm window of the Edit Local Replica Options wizard, for Task Name, type a name for the task and then click Apply. The system options are set.
5 Managing Business Copy pairs This chapter provides instructions for completing BC pair user tasks using the RWC. Workflow for managing Business Copy pairs During most pair user tasks, the P-VOL remains available to the host for I/O operations. You must have Storage Administrator (Local Copy) role to complete BC pair user tasks. Use the following workflow to complete pair user tasks: 1. Check the pair status (see “BC pair status checks” (page 34)).
Related topics • “Prerequisites for creating BC pairs” (page 35). • “Creating BC pairs” (page 36). • “Cascaded pairs” (page 7). • “Initial copy workflow” (page 8). • “Update copy workflow” (page 9). • “Create Pairs wizard” (page 107). • “MP blades and deleting pairs” (page 60). Workflow for creating Business Copy pairs Use the following workflow to create an BC pair: 1. If you are creating L1 and L2 pairs, check the status.
• If the P-VOL is already paired with other S-VOLs (“PAIR” status), you have determined that the status of existing S-VOLs is in the status that is required to create the new pair. For more information about S-VOL status, see “Unaffected S-VOL status and pair user tasks” (page 67). • If you are concerned with host server I/O performance, you have determined that the I/O load is light. For more information about checking I/O performance-related information, see the HP XP7 Remote Web Console User Guide.
3. In the Select Pair Configuration window of the Create Pairs wizard, complete the following and then click Next: • For Copy Type, select Business Copy. • For Emulation Type, select the emulation type. Value: OPEN-V Default: OPEN-V • For Pair Topology Type, select the pair topologies that match your configuration. For more information about creating L1 and L2 pairs with different topologies, see “Creating L1 and L2 pairs with different topologies” (page 40).
4. In the Select Primary Volumes window of the Create Pairs wizard, complete the following: 1. In the Available LDEVs table, select the LDEV you want to be the P-VOL, then click Add. NOTE: You can make multiple selections. The LDEV is moved to the Selected LDEVs table. NOTE: 2. 5. An Online Migration volume will not appear in the Selected LDEVs table. Click Next. In the Select Secondary Volumes window of the Create Pairs wizard, assign LDEVs as S-VOL to the specified P-VOL LDEV (or LDEVs).
• (Optional) To sort the Available LDEVs and Selected Pairs tables according to the capacity, for Capacity, choose a capacity item by which to sort the tables. 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. • (Optional) To sort the Selected Pairs table, click Sort in the middle-left. • (Optional) To change the split type and the rate at which data is copied, which applies to all new pairs, change the pair options.
6. In the Confirm window of the Create Pairs wizard, complete the following and then click Apply: • For Task Name, type a name for the task. Default: date-window name Character and symbol limit: 32 alphanumeric except / : , ; * ? “ < > | Case sensitive: Yes • For Go to tasks window for status, select to open the Tasks window. The BC pair is created and the status is “PAIR”. Related topics • “Pair splitting methods” (page 46). • “Changing BC pair options” (page 44).
Example: Changing a pair’s L1 and L2 combination from the preceding topology to the following topologyone shown in the following image You can change L1 and L2 pair configurations that do not match the specified configuration in the Create Pairs wizard. This is also true when you create a new pair using an existing P-VOL with an existing configuration. 1. Open the Select Secondary Volumes window of the Create Pairs wizard. 2.
3. In the Edit Mirror Units dialog box, for Mirror Unit, for L1, select 0 and for L2, select 2. This number-4 L2 S-VOL is paired with the number-1 L1 volume (with MU0). Refining pair topology You can refine a pair’s topology by removing unwanted volumes. • Open the Select Secondary Volumes window of the Create Pairs wizard. In the Selected Pairs table, select the line for the pair you want to remove and click Remove. The volume is removed from the table.
Related topics • “System options that affect performance” (page 30). Suspending BC pair creation Suspending a pair copies the entire P-VOL to the S-VOL. The S-VOL continues accepting write I/O operations from the P-VOL and the P-VOL track is marked as differential data.
3. In the Suspend Pairs window, complete the following and then click Apply: • For Task Name, type a name for the task. Default: date-window name Character and symbol limit: 32 alphanumeric except / : , ; * ? “ < > | Case sensitive: Yes • For Go to tasks window for status, select to open the Tasks window. The pair is suspended (“PSUE” status). Related topics • “BC pair creation” (page 34).
2. In the Select Secondary Volumes window of the Create Pairs wizard, click Change Options. 3. In the Change Options dialog box, complete the following and then click OK: • For Split Type, select a split type. Values: - Non Split: The pair is not split. - Quick Split: The pair is split and then the differential data is copied so that the S-VOL is immediately available for read and write I/O. Any remaining differential data is copied to the S-VOL in the background.
If you have assigned an BC P-VOL or S-VOL to a volume reserved for Auto LUN, splitting the volume cancels migration. If you are splitting BC pairs with shared Cnt Ac-S or Cnt Ac-J volumes, see the restrictions. If you are sharing BC S-VOLs with Cnt Ac-J P-VOLs and the R-JNL has a timeout period that ends after the split time, the storage system may not detect the journal data. In this case, the BC split operation runs after the timeout period. You set the timeout value according to your requirements.
◦ (The status of the L1 pair if you are splitting, or creating and immediately splitting, an L2 pair) “PSUS” ◦ (The status of all pairs in a CG that you want to Quick Split) “PAIR” • If you want to split an L1 pair that has L2 pairs, make sure the pair status is supported (see “L1, L2 pair status and supported pair user tasks” (page 65)). • If you are concerned with host server I/O performance, check to make sure the I/O load is light.
Splitting BC pairs 1. In the RWC main window, in the resource tree, click Replications > Local Replication > BC Pairs. 2. In the BC Pairs tab, select the pair you want to split, and then click Split Pairs. 3. In the Split Pairs window of the Split Pairs wizard, complete the following and then click Finish: • For Split Type, select the split type. Values: - Quick Split: Splits the new pair and then copies the data so that the S-VOL is immediately available for read and write I/O.
For more information about the methods you can use to split pairs, see “Pair splitting methods” (page 46). • For Copy Pace, select the rate at which you want the XP7 storage system to copy data. Values: - Slower: Improved host server I/O performance but slower processing speed. - Medium: Average processing speed and host server I/O performance. - Faster: Faster processing speed but slower host server I/O performance.
1. 2. 3. Define a CG to which you want to assign the BC pairs as a RAID Manager CG. Assign the BC pairs to the same BC CG to ensure consistent backup operations. Quick Split the BC pair. For more information about how to Quick Split BC pairs, see “Splitting BC pairs” (page 48).
Restrictions for consistency group pair-split Consistency group (CG) pair-split has the following restrictions: • To perform a CG pair-split on BC pairs, the pairs must have been created using RWC. You cannot use CG pair-split if the pairs were created using RAID Manager. Related topics • “Requirements, restrictions, and guidelines for using consistency group pair-split with shared BC and Cnt Ac-S or Cnt Ac-J volumes” (page 20).
Resynchronizing a suspended pair copies the P-VOL to the S-VOL and takes the same amount of time as the initial copy operation. CAUTION: Resynchronizing a pair does not ensure data consistency. Data in the two volumes is the same only if: • The P-VOL is offline. • The pair is split (the S-VOL status is “PSUS”). For more information about pair status, see “The RWC pair status names and descriptions” (page 63).
Related topics • “Splitting BC pairs” (page 45). Reverse resynchronization You can use one of the following methods to restore pairs, including the requirements and restrictions: • Reverse Copy (Secondary > Primary). A full restoration from the S-VOL to the P-VOL. The differential data is updated to the P-VOL. During a Reverse Copy you can delete or suspend the pairs, but you cannot create, split, or resynchronize pairs that share the same P-VOL. The P-VOL is inaccessible to hosts.
You cannot Quick Restore the following pairs: ◦ An BC/SS L2 pair ◦ A pair volume for which you are formatting either internal volume using Quick Format. For more information about formatting volumes using Quick Format, see the HP XP7 Provisioning for Open Systems User Guide. ◦ A pair in which one volume is a THP V-VOL, though not both. ◦ An BC/SS S-VOL you are sharing with an FS volume. Workflow for resynchronizing BC pairs Use the following workflow to resynchronize BC pairs: 1.
Related topics • “System options that affect performance” (page 30). • “Reverse resynchronization” (page 53). • “Pair splitting methods” (page 46). Resynchronizing or restoring BC pairs Use this task to resynchronize or restore split or suspended pairs. Running this command typically takes less time than resynchronizing suspended pairs (“PSUE” status). Split pairs typically contain much less accumulated differential data than the total amount of data in the P-VOL.
3. In the Resync Pairs window of the Resync Pairs wizard, complete the following and then click Finish: • For Resync Type, select the type of resynchronization you want to perform. Values: - Normal Copy (Primary > Secondary): A full forward resynchronization. - Quick Resync (Primary > Secondary): A partial forward resynchronization. - Reverse Copy (Secondary > Primary): A full restoration of the P-VOL from the S-VOL. - Quick Restore (Secondary > Primary): A partial restoration of the P-VOL from the S-VOL.
4. In the Confirm window of the Resync Pairs wizard, complete the following and then click Apply: • For Task Name, type a name for the task. Default: date-window name Character and symbol limit: 32 alphanumeric except / : , ; * ? “ < > | Case sensitive: Yes • For Go to tasks window for status, select to open the Tasks window. The pairs are resynchronized and the volumes are paired (“PAIR” status).
Workflow for setting the RAID level Use the following process to resume to the original RAID levels: 1. Split the pair. For more information about how to split pairs, see “Splitting BC pairs” (page 48). 2. Restore the pair using Quick Restore. For more information about how to restore pairs using Quick Restore, see “Resynchronizing or restoring BC pairs” (page 55). BC pair deletion Delete the BC pairs that you no longer need. Deleting a pair unpairs the P-VOL and S-VOL but does not delete their data.
Deleting BC pairs 1. In the RWC main window, in the resource tree, click Replications > Local Replication > BC Pairs. 2. In the BC Pairs tab, select the pair you want to delete and click More Actions > Delete Pairs.
3. In the Delete Pairs window, complete the following and then click Apply: • For Task Name, type a name for the task. Default: date-window name Character and symbol limit: 32 alphanumeric except / : , ; * ? “ < > | Case sensitive: Yes • For Go to tasks window for status, select to open the Tasks window. NOTE: To prevent the task from ending abnormally, wait until the P-VOL and S-VOL are unpaired (about 10 seconds) before completing another pair user task, such as creating pairs, or event waiting.
6 Monitoring and maintaining Business Copy This chapter provides information and instructions to monitor and maintain the BC system. Monitoring the Business Copy system Monitor the BC system on an ongoing basis to keep track of pairs and volumes and their current and past conditions. You can monitor the system in the following ways: • “Viewing pair information for local replication” (page 61). • “Monitoring BC pair activity and status” (page 62).
• In the RWC main window, in the resource tree, click Replication. Monitoring BC pair activity and status Monitor the BC pair activity and status to maintain your pairs. Pair user tasks require a specific status or is allowed for multiple possible statuses. As you complete user tasks, the pair’s status changes.
2. 3. In the summary section of the Local Replication page, view license information. (Optional) If the information in the window is not up to date, click the Refresh View icon to refresh the information in the window. In the BC Pairs tab, complete the following: 1. Locate the pair for which you want to review the status. 2. In the Status column, review the pair status.
RWC status Description S-VOL access PSUS The pair has been split. The XP7 storage system stops performing update copy operations but accepts write I/Os for the S-VOL. The XP7 storage system keeps track of updates to split P-VOLs and S-VOL so that you can Quick Resync. Read/write enabled S-VOL can be mounted. COPY(RS)/COPY The pairresync RAID Manager command is in progress. The XP7 storage system does not accept write I/Os for S-VOL.
Related topics • “The RWC pair status names and descriptions” (page 63) Pair status and supported pair user tasks A pair’s status determines the pair user tasks you can perform. The following table shows the pair user tasks you can complete based on the pair status.
L2 pair status L1 pair user task Create pairs Split pairs Resynchronize pairs Suspend pairs Delete pairs COPY(RS-R)/RCPY NO NO NO YES YES PSUE YES YES YES YES YES The following table shows the L2 pair user tasks that you can perform based on the related L1 status.
Unaffected S-VOL status and pair user tasks The BC pair user tasks you can perform depend on the pair’s status and the status of unaffected S-VOLs. The following table shows the tasks you can perform based on the status of S-VOLs related to the P-VOL in other pairs.
3. In the View Pair Properties window, view the pair properties. Related topics • “Monitoring BC pair activity and status” (page 62). • “View Pair Properties window” (page 97). • “Local Replication window” (page 91). Monitoring BC pair synchronous rates You can check the percentage of synchronized data between the P-VOL and S-VOL from the View Pair Synchronous Rate window.
1. In the RWC main window, in the resource tree, click Replication > Local Replication > BC Pairs. 2. In the BC Pairs tab, select the pair and then click More Actions > View Pair Synchronous Rate. 3. On the View Pair Synchronous Rate window, click Refresh View to show the latest synchronous rate. NOTE: If you close the window, information in the Local Replication window may not be up to date. Click the Refresh View icon to refresh the information in the window.
Related topics • “View Pair Synchronous Rate window” (page 100) Monitoring consistency groups You can check the number of CGs and the details and individual properties for CGs from the following section and tabs in the Local Replication window: • The summary section. Use this section to view the number of CGs and the number of pairs. • The BC Pairs tab. Use this tab to: ◦ View a list of BC pairs. ◦ Monitor pair activity and status.
Related topics • “Local Replication window” (page 91) Viewing consistency group properties 1. In the RWC main window, in the resource tree, click Replication > Local Replication > Consistency Groups. 2. In the Consistency Groups tab of the Local Replication window, click the CTG ID for the CG you want to view properties. 3. In the Consistency Group Properties window, view the CG’s properties, such as group information for local replication.
Viewing a list of Fast Snap pairs You can view a list of FS pairs in the FS Pairs tab of the Local Replication window. 1. In the RWC main window, in the resource tree, click Replication > Local Replication > FS Pairs. 2. In the FS Pairs tab, view the list of FS pairs. Related topics • “Local Replication window” (page 91). Monitoring pair user task history You can review a history of the user tasks you have completed on a pair from the Histories window. This window shows up to 16,384 user tasks.
Code Description Explanation 47D0 COPY ABNORMAL END Copy processing has ended abnormally for reasons other than the ones stated above in this table. 47E9 INITIALIZE START The initialization processing has started. 47EA INITIALIZE END The initialization processing completed. 47EB INITIALIZE ENDED ABNORMAL The initialization processing has ended abnormally. 1. In the RWC main window, in the resource tree, click Replication. 2. In the Replication window, click View Histories. 3.
Related topics • “Histories window” (page 102) Workflow for maintaining the system Some maintenance tasks are a response to behavior discovered while monitoring the system. You complete other tasks to keep the system in tune with your changing requirements. Use the following workflow to maintain the system: 1. If you discover behavior while monitoring the system, maintain the system. For more information about maintaining the system, see “Pair user tasks during system and device maintenance” (page 74).
7 Troubleshooting Business Copy This topic provides BC troubleshooting information. BC pair tasks and display troubleshooting The following table provides task and display troubleshooting information for BC pairs. Error Corrective action The RWC hangs, or BC pair task are not • Make sure all BC requirements and restrictions are met. properly performed. • Make sure the XP7 storage system’s power is on and is fully functional.
Locating and interpreting error codes and logs using the RAID Manager You can troubleshoot the tasks that you have performed using RAID Manager. The following task describes RAID Manager error codes and how to locate and interpret them. You can use the SSB1/SSB2 error code combination to determine the cause of the error. The error codes are shown to the right of the equal symbol (=) in the log. The SSB1 code is the last four alphanumeric characters to the left of the comma (,).
SSB2 code Description 2047 The pair task was rejected because the current microcode version does not support the specified P-VOL capacity. 2048 The pair task was rejected because the current microcode version does not support the specified S-VOL capacity. 205B The pair was not created because the specified MU number is in use. 2060 The volume you specified as an BC P-VOL was a volume of a Cnt Ac-J pair.
SSB2 code Description 2097 The Quick Restore was rejected because of one of the following: • The P-VOL is also an THP V-VOL, but the S-VOL is a normal volume. • The P-VOL is a normal volume, but the S-VOL also an THP V-VOL. 78 209E The pair task was rejected because the volume you specified as the P-VOL is a Mainframe Fibre Data Migration volume. 20A2 The create pair task was rejected because the P-VOL is an THP or Smart V-VOL for which the capacity is increasing.
SSB2 code Description 20F6 The pair creation was rejected because one of the following applied to the volume specified as the P-VOL. • The volume was undergoing online data migration. • The volume was already used as the S-VOL of an SI pair whose P-VOL was undergoing online data migration. 20F7 The pair operation was rejected because one of the following applied to the volume specified as the P-VOL. • The volume was undergoing online data migration.
SSB2 code Description 2314 The pair was not created because the volume you specified as the S-VOL is the S-VOL of another pair that has been split (“PSUS” status). 231F The pair was not restored because the P-VOL of the specified pair is online to the host. 2322 The pair task was rejected because there is not a sufficient amount of installed shared memory or initialization is not completed.
SSB2 code Description 2344 The pair task was rejected because the volume you specified as the S-VOL for BC pair tasks is not an S-VOL. 2346 The volume you specified as an BC S-VOL is a Cnt Ac-S P-VOL. The pair task was rejected because the Cnt Ac-S pair is not in the required status. For more information about the required status for each pair task, see “Pair status and supported pair user tasks” (page 65). 2347 The volume you specified as an BC S-VOL was a Cnt Ac-S S-VOL.
SSB2 code Description 2383 The pair task was rejected because the volume you specified as the S-VOL is a command device. 2386 The pair task was rejected because the volume you specified as the S-VOL is a reserved volume for Auto LUN. 2387 The pair was not created because the volume you specified as the P-VOL is the volume for Auto LUN. 2394 The pair was not registered in the CG because the number of the pairs assigned to the CG has exceeded the defined maximum number of pairs.
1. 2. 3. • Locate a CG number that is not being used by a pair. Specify the CG number explicitly. You can now run the Paircreate command on the host server.
8 Support and other resources Contacting HP For worldwide technical support information, see the HP support website: http://www.hp.
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 1 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: 86 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 Interface support for BC user tasks and options This appendix lists BC user tasks and options, and BC CG user tasks and options, and the interfaces that support them. Supported Remote Web Console and RAID Manager user tasks and options The following table lists the BC pair user tasks and options that RWC and RAID Manager support. The following table shows the pair user tasks that you can complete using RWC and RAID Manager.
The following table shows the CG user tasks by user interface, RWC or RAID Manager. CG user task System option RWC RAID Manager Command Option Reserve CG No options YES Not necessary Not necessary Cancel the CG reservation No options YES Not necessary Not necessary Assign pairs to a CG No options NO Paircreate -m grp [CTGID] MU number NO Paircreate Uses MU# in HORCM.
B Business Copy GUI reference This appendix describes BC windows and dialog boxes in the RWC. Replication window Use this window to view pair information for local replication. This window includes the following tabs: • Summary section • Replication tab • Replica LDEVs tab The following image shows this window, with the summary section and Replica LDEVs tab in view. Summary section The following table shows the items in this section of the Replication window.
Item Description View Histories button (for Remote Replication) Click to open the Histories window for remote replication. Edit Options button (for Local Replication) Click to open the Edit Local Replica Options wizard. Replications tab The Replica LDEVs tab shows a list of LDEVs. From this window, you can complete the following: • Click the LDEV ID for a specific replica LDEV and open the LDEV Properties window, which contains additional information for the selected replica LDEV.
Item Description CVS attribute”. Each of these three items displays only if it is specified. If none of them are specified, a blank displays. • SSID: The virtual SSID of the volume. If no virtual SSID is specified, a blank displays. Export button Click to open a dialog for downloading table information to a tab-separated values (TSV) file. * These items are not shown in the table by default. You must add them using the Column Settings window.
Summary section The following table shows the items in this section of the Local Replication window. Item Description Number of Pairs The number of pairs for each local replication software type. Number of Consistency Groups The number of CGs that have a status other than “Free”. Snapshot Estimated Manageable Capacity The estimated FS pair capacity. The following icon, is less than 128 TB.
Item Description Values: • LDEV ID: The P-VOL’s LDEV identifier. Click to open the LDEV Properties window, which contains additional information for the selected replica LDEV. • LDEV Name: The P-VOL’s LDEV name • Port ID: The name of the P-VOL LUN path. • Host Group Name: The P-VOL’s host group name • LUN ID: The P-VOL’s LUN identifier.
Item Description • Provisioning Type*: The S-VOL’s provisioning type, which can be one of the following: ◦ Basic: Internal volume ◦ DP: DP-VOL ◦ External: External volume • Emulation Type: The S-VOL’s emulation type • Capacity: The S-VOL’s capacity • CLPR: The S-VOL’s CLPR number • Virtual Storage Machine*: The model type and serial number of the virtual storage machine to which the S-VOL belongs. • Virtual LDEV ID*: The identification number of the S-VOL’s virtual LDEV.
Item Description For more information about how to add items to a table using this window, see the HP XP7 Remote Web Console User Guide. FS Pairs tab Use this tab on the Local Replication window to view FS pair information for local replication. The following image shows this tab. The following table shows the items on this tab. Item Description Primary Volume The P-VOL information. Values: • LDEV ID: The P-VOL’s LDEV identifier. Click to open the LDEV Properties window.
Item Description For FS status descriptions, see the HP XP7 Fast Snap User Guide. Secondary Volume The S-VOL information. Values: • LDEV ID: The S-VOL’s LDEV identifier. Click to open the LDEV Properties window. • LDEV Name: The S-VOL’s LDEV name • Port ID: The port name of the S-VOL LDEV’s LUN path. • Host Group Name: The S-VOL’s host group name. • LUN ID: The LUN ID of the S-VOL LDEV's LUN path. • Capacity: The S-VOL’s capacity. • CLPR: The S-VOL’s CLPR number.
The following table shows the items on this tab on the Local Replication window. Item Description CTG ID The BC pair’s CG identification number. Click to open the Consistency Group Properties window. Status The status. Values: • BC Used: The CG used by BC/SS. • BC Z Used (RAID Manager): The CG used for BC Z pairs. • FS Used: FS pairs is using the CG. • Free: The CG is not being used and is not reserved. • (Changing...): The status is in the process of changing.
Pair Properties section The following table shows the items in this section of the View Pair Properties window. Item Description Copy Type The type of pair. Values: • Business Copy: BC pair • Business Copy for Mainframe: BC Z pair • Fast Snap: FS pair Default: Business Copy LDEV ID The identification number of the LDEVs for the P-VOL and S-VOLs. LDEV Name The name of the LDEVs for the P-VOL and S-VOLs.
Pairs table The following table shows the items in this table on the View Pair Properties window. Item Description Primary Volume The P-VOL information.
Item Description - N is shown when the S-VOL cannot be read because you specified “-m noread” using RAID Manager. - A hyphen (-) indicates that the XP7 storage system has not written to the S-VOL. ◦ For FS: - W is shown if the XP7 storage system has written data to the S-VOL when its pair status is “PSUS(SP)/PSUS” or “PSUS”. - A hyphen (-) indicates that the XP7 storage system has not written to the S-VOL.
Pairs table The following table shows the items in this table. Item Description Primary Volume The P-VOL information. Values: • LDEV ID: The P-VOL’s LDEV identifier. • LDEV Name: The P-VOL’s LDEV name. • CLPR: The P-VOL’s CLPR number. • Virtual Storage Machine: The model type and serial number of the virtual storage machine to which the P-VOL belongs. • Virtual LDEV ID: The identification number of the P-VOL’s virtual LDEV. If no virtual LDEV ID is assigned, a blank displays.
Item Description Synchronous Rate (%) For BC and BC Z: The synchronous rate (%) between P-VOL and S-VOL. For FS: The rate at which the current S-VOL matches the next new generation of the S-VOL. If the S-VOL is the latest one, the storage system computes the synchronous rate by comparing the S-VOL and the P-VOL. Secondary Volume The S-VOL information. Values: • LDEV ID: The S-VOL’s LDEV identifier. • LDEV Name: The S-VOL’s LDEV name. • CLPR: The S-VOL’s CLPR number.
Setting fields The following table shows the setting fields for this window. Item Description Copy Type The pair type. Values: • BC: BC/SS • FS: FS • BC Z: BC Z • FC Z/FCSE: Compatible FlashCopy and Compatible FlashCopy SE Histories table The following table shows the items in this table. Item Description Date The operation date and time. Primary Volume The P-VOL information. Values: • LDEV ID: The P-VOL’s LDEV identifier.
Histories table for FS This table is shown on the FS Histories window. Only tasks performed on the pairs consisting of the P-VOL or S-VOLs to which you are allocated are shown. Item Description Date and Time The date and time the operation was performed. Primary Volume The P-VOL information. Values: • LDEV ID: The P-VOL’s LDEV identifier.
Item Description Values: • LDEV ID: The target volume’s LDEV identifier. • Provisioning type: The target volume’s provisioning type, which can be one of the following: ◦ Basic: Internal volume ◦ THP: THP V-VOL ◦ External: External volume Relationship ID The relationship identifier. Description Code The code for the type of operation performed. Description The description of the operation performed.
Item Description Values: • BC Used: The CG is in use by BC/SS. • BC Z Used (PPRC/BCM): BC Z is using the CG and you are using BCM or IBM PPRC to manage the CG. • FS Used: FS is using the CG. • Free: The CG is not being used and is not reserved. • (Changing...): The status is the process of changing. Number of Pairs The number of pairs assigned to the CG. Pairs table The Pairs table shows pairs with P-VOL and/or S-VOL allocated to you. The following table shows the items in this table.
Item Description • Emulation Type: The S-VOL’s emulation type. Values: OPEN-V • Capacity: The S-VOL’s volume capacity. • CLPR: The S-VOL’s CLPR number. • Virtual Storage Machine: The model type and serial number of the virtual storage machine to which the S-VOL belongs. • Virtual LDEV ID: The identification number of the S-VOL’s virtual LDEV. If no virtual LDEV ID is assigned, a blank displays.
The following table shows the items in this window. Item Description Copy Type The copy type. Values: • Business Copy • Fast Snap Default: Business Copy Emulation Type BC and BC Z only. The emulation type. Value: OPEN-V Default: OPEN-V Pair Topology Type BC only. The BC pair configuration. Values: • Cleared but available: You can configure the pair. • Selected but not available: The BC pair exists. • Cleared but not available: You cannot configure the pair. • Select All: Selects all configurations.
The following table shows items in this window. Item Description Port ID BC and FS only. Filters LDEVs in the Available LDEVs table according to the port ID. Default: Any Host Group Name BC and FS only. Filters LDEVs in the Available LDEVs table according to host group name. Default: Any Available LDEVs table This table is shown on the Select Primary Volumes window. The following table lists the items in this table. Item Description LDEV ID The LDEV’s identifier. LDEV Name The LDEV’s name.
The following table shows the items in this table. Item Description LDEV ID The selected P-VOL’s LDEV identifier. LDEV Name The selected P-VOL’s LDEV name. Port ID BC and FS only. The port name of the LDEV’s LUN path. Host Group Name BC and FS only. The host group name of the LDEV’s LUN path. LUN ID BC and FS only. The LUN identifier of the LDEV's LUN path. Provisioning Type The LDEV’s provisioning type.
The following table shows the items in this window. Item Description Capacity list Click to select the capacity by which to filter the available LDEVs. The remaining number you have to select This item refers to the P-VOLs in the Selected Pairs table that do not have an assigned S-VOL. Exclude Paired Volumes BC only. Select to hide volumes already in a pair. Values: • Selected: Paired volumes are not shown in the list. • Cleared: Paired volumes are shown in the list.
Available LDEVs table The following table shows the items in this table of the Select Secondary Volumes window of the Create Pairs wizard. Item Description LDEV ID The LDEV’s identifier. LDEV Name The LDEV’s name. Port ID BC and FS only. The port name of the LDEV’s LUN path. Host Group Name BC and FS only. The host group name of the LDEV’s LUN path. LUN ID BC and FS only. LUN identifier of the LDEV's LUN path. Emulation Type BC and BC Z only. The LDEV’s emulation type.
Item Description For FS, Emulation Type does not display. Secondary Volume The S-VOL. Values: • LDEV ID: The S-VOL’s LDEV identifier. This item is blank if no LDEV is assigned. • LDEV Name: The S-VOL’s LDEV name. A hyphen (-) displays if no LDEV is assigned. • Port ID: Port name of the S-VOL LDEV’s LUN path. • Host Group Name: Host group name of the S-VOL LDEV’s LUN path. • LUN ID: LUN identifier of the S-VOL LDEV's LUN path. • Emulation Type: The S-VOL’s emulation type.
Item Description For more information about changing the MU number and pair topology, see “Creating BC pairs” (page 36) and “Creating L1 and L2 pairs with different topologies” (page 40). Remove button Click to remove the unwanted pairs or LDEV from the Selected Pairs table. Note: For BC, you cannot remove L1 pairs if the pairs have an L2 pair. Confirm window This window is the fourth and last window of the Create Pairs wizard. This window includes the Selected Pairs table.
Item Description For BC Z, Port ID, Host Group Name, and LUN ID do not display. For FS, Emulation Type does not display. Copy Type The types of pairs. Values: • BC-L1: BC/SS L1 • BC-L2: BC/SS L2 • BC Z: BC Z • FS: FS Secondary Volume The S-VOL information. Values: • LDEV ID: The S-VOL’s LDEV identifier. • LDEV Name: The S-VOL’s LDEV name. • Port ID: Port name of the S-VOL LDEV’s LUN path. • Host Group Name: Host group name of the S-VOL LDEV’s LUN path.
Selected Pairs table The following table shows the items in this table. NOTE: The Selected Pairs table appears on the Confirm window and the Split Pairs window of the Split Pairs wizard. The table for the items on the Confirm window is shown with that window. Item Description Primary Volume The P-VOL information. Values: • LDEV ID: The P-VOL’s LDEV identifier. • LDEV Name: The P-VOL’s LDEV name. • Emulation Type: The P-VOL’s emulation type.
Confirm window This window of the Split Pairs wizard includes the Selected Pairs table. The following image shows this window. Selected Pairs table The following table shows the items in this table in the Confirm window of the Split Pairs wizard. Item Description Primary Volume The P-VOL information.
Item Description Values: • Slower: Improved host server I/O performance but slower processing speed. • Medium: Average processing speed and host server I/O performance. • Faster: Faster processing speed but slower host server I/O performance. Secondary Volume The S-VOL information.
Selected Pairs table The following table shows the items in this table in the Resync Pairs window of the Resync Pairs wizard. Item Description Primary Volume The P-VOL information. Values: • 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 The pair type. Values: • BC-L1: BC/SS L1 • BC-L2: BC/SS L2 • BC Z: BC Z • FS: FS Status The status for the pair.
Confirm window The following image shows this window of the Resync Pairs wizard. Selected Pairs table The following table shows the items in this table in the Confirm window of the Resync Pairs wizard. Item Description Primary Volume The P-VOL information. Values: • 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 The types of pairs.
Item Description Copy Pace BC and BC Z only. The system option that determines the rate at which you want the XP7 storage system to copy data. Values: • Slower: Improved host server I/O performance but slower processing speed. • Medium: Average processing speed and host server I/O performance. • Faster: Faster processing speed but slower host server I/O performance. Secondary Volume The S-VOL information.
Item Description • Capacity: The P-VOL’s volume capacity • CLPR: The P-VOL’s CLPR number Copy Type The types of pairs. Values: • BC-L1: BC/SS L1 • BC-L2: BC/SS L2 • BC Z: BC Z Status The status for the pair. For more information about pair status, see “The RWC pair status names and descriptions” (page 63). Secondary Volume The S-VOL information.
Item Description Values: • 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 The types of pairs. Values: • BC-L1: BC/SS L1 • BC-L2: BC/SS L2 • BC Z: BC Z • FS: FS Status The pair status. For more information about pair status, see “The RWC pair status names and descriptions” (page 63). Secondary Volume The S-VOL information.
Change Options dialog box Use this dialog box to change the split type and copy pace for all new pairs that you create. For more information about how to navigate to this dialog box, see “Changing BC pair options” (page 44). The following image shows this dialog box. Item Description Split Type The split type. Values: • Non Split: The pair is not split. • Quick Split: The pair is split and then the data is copied so that the S-VOL is immediately available for read and write I/O.
The following image shows this window. Setting fields The following table shows the setting fields for this window. Item Description System Type The system type. Values: • Open: BC or FS BC/FS or BC Z/FC Z/FCSE System Options table The following table shows the items in this table. Item Description System Option System options that you can enable or disable.
Item Description for FC Z or FCSE) remains unchanged, and differential data is not copied to the new S-VOL. Default status: Disabled • HOST I/O Performance: Suppresses copy operations at all times regardless of the workload. This system option increases I/O performance. Default status: Disabled • Copy Pace: Maximizes host server I/O performance by suppressing copy processing only if the pair status is “DUPLEX” (for BC Z, FC Z, or FCSE) or “PAIR” (for BC or FS).
BC/FS or BC/SS Z/FC Z/FCSE System Options table The following table shows the items in this table. Item Description System Option Options that you can change. Status Shows whether the option is currently enabled or disabled.
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 A adjusting pair topology, 40 AIX and Business Copy performance, 17 B BC, BC Z - role required to perform operations, 30 C Cache Residency Manager, 23 calculating number of pairs, 12 cascaded pairs, 7 configuration workflow, 30 Consistency group operations using Remote Web Console, RAID Manager, 87 consistency group pair-split, 49 consistency group pair-split troubleshooting, 82 consistency group pair-split with shared volumes, 18 contacting HP, 84 Continuous Access Journal, 28 Continuous Access Syn
error codes, 76 pair statuses, 64 requirements for, 11 related documentation, 84 Remote Web Console, 6 Resource Partition, 26 resync type, 52 resynchronizing pairs, 51 reverse copy, 53 role required for BC, BC Z operations, 30, 34 S sharing volumes, 23 SI, SIz - role required to perform operations, 30 SOM 459, 16 splitting pairs, 45 splitting pairs in a consistency group, 46 status and permitted operations, 65 for L1, L2 pairs and operations permitted, 65 for unaffected S-VOL and operations permitted, 67 s
