HP XP7 Business Copy for Mainframe Systems User Guide Abstract This document provides instructions for setting up, planning, and operating Business Copy Z on the HP XP7 Storage (XP7) system.
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Contents 1 Business Copy Z overview...........................................................................7 Hardware and software components...........................................................................................7 Interface tools......................................................................................................................7 Remote Web Console......................................................................................................8 RAID Manager......
Business Copy Z volume access attribute setting using Volume Retention....................................29 BC Z pair tasks and reserve attribute change tasks.................................................................29 4 Configuring Business Copy Z.....................................................................31 Workflow for setting up Business Copy Z...................................................................................31 Workflow for managing CG IDs for Business Copy Z..........
Unaffected S-VOL status and pair user tasks......................................................................69 Monitoring BC Z pair, volume details...................................................................................69 Monitoring BC Z pair synchronous rates................................................................................70 Monitoring consistency groups.............................................................................................
C Business Copy Z GUI reference................................................................108 Replication window..............................................................................................................108 Local Replication window......................................................................................................110 View Pair Properties window..................................................................................................
1 Business Copy Z overview Business Copy for Mainframe, also known as Business Copy Z (BC Z), 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 Z 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.
For more information about IBM PPRC, see the IBM documentation regarding IBM PPRC. • IBM DFSMSdss host software functions For more information about IBM DFSMSdss, see the Hitachi Business Continuity Manager User Guide. Remote Web Console Use RWC to complete the following: • Install the BC Z license key, which enables it. • Configure the XP7 storage system. • Perform the initial and update copy operations. • Monitor, maintain, and troubleshoot the XP7 storage system.
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. After the initial copy, XP7 performs an update copy to periodically copy the differential data in the P-VOL to the S-VOL. Subsequent write operations to the P-VOL are regularly duplicated to the S-VOL. The data in the P-VOL is copied to the S-VOL.
Related topics • 10 “Splitting BC Z pairs” (page 48).
2 Business Copy Z system requirements and planning This chapter describes system requirements and planning tasks for BC Z storage systems. Business Copy Z system requirements The following table shows minimum requirements for BC Z. Item Requirement BC Z license capacity Based on purchased capacity. For more information about license capacity requirements, see “BC Z licensed capacity and licensed capacity requirements” (page 14). License key Must be installed.
Item Requirement For more information about sharing volumes, see “Sharing Business Copy Z volumes” (page 25). You cannot use the following volumes as pair volumes: • Cnt Ac-J Z journal volumes • Command devices for BCM • TSE volumes • Volumes that have an emulation type of 3390-V For more information about supported emulation types, see “Pair volumes and supported emulation types” (page 12). Maximum number of pairs Per XP7 storage system: 32,768 pairs (if you pair one S-VOL per P-VOL).
P-VOL S-VOL 3390-3 • 3390-3 • 3390-3A • 3390-3B • 3390-3C 3390-3A • 3390-3 • 3390-3A 3390-3B • 3390-3 • 3390-3B 3390-3C • 3390-3 • 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 3390-MB • 3390-
P-VOL S-VOL • 3390-MB 3390-MC • 3390-M • 3390-MA 3390-A 3390-A 3390-V None supported Related topics • “Determining capacity of BC Z pairs in XP7 workflow” (page 14). • “BC Z pair creation” (page 38). BC Z licensed capacity and licensed capacity requirements P-VOLs and S-VOLs must have licensed capacity. The total capacity of pair volumes must be less than the maximum volume capacity to which you are licensed. Volume capacity is counted only once, even if you use the volume more than once.
Software applications that use tables The following XP7 software applications use differential tables: • Business Copy • Auto LUN The following XP7 software applications use pair tables: • Business Copy • Auto LUN (using migration plans) Tables and installed shared memory The number of differential and pair tables that are present in the XP7 storage system depends on the amount of installed shared memory.
• Run the following RAID Manager or BCM command: inqraid For more information about running this command, see the HP XP7 RAID Manager User Guide and the Business Continuity Manager User Guide. Calculating the number of tables for Business Copy Z You can calculate the number of differential and pair tables your XP7 storage system needs to create BC Z pairs. NOTE: 1. This calculation assumes that you are only using BC Z in the system.
• Use the following formula: Σ(α) ≤ (β)and Σ(γ) ≤ (δ) where: • Σ(α): The total number of differential tables per pair. For more information about the total number of differential tables per pair, see “Calculating the maximum number of BC Z pairs” (page 16). • (β): The number of differential tables available in the system. For more information about differential tables, see “Tables and installed shared memory” (page 15)). • Σ(γ): The total number of pair tables per pair (per previous calculation).
Related topics • “Splitting BC Z pairs” (page 50). • “Pair splitting methods” (page 49). Performance planning and calibrating your XP7 storage system Performing pair tasks, such as creating, splitting, and resynchronizing BC Z pairs, affect host I/O performance on the XP7 storage system. Calibrate your XP7 storage system before performing tasks. You can also maximize host I/O performance.
Use the following guidelines to maximize host I/O performance: • If you are creating BC Z pairs, complete one or more of the following: ◦ Create the pair when 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. ◦ • Limit the number of pairs that you simultaneously create. If you are creating, splitting, or resynchronizing BC Z pairs, select a slower copy pace.
Splitting pairs using consistency groups A consistency group lets you perform tasks and change pair status on a group of BC Z pairs. With consistency group (CG) pair-split, you can simultaneously split all of the pairs in a CG. Using consistency group pair-split with shared volumes If you share BC Z P-VOLs in a XP7 storage system with Cnt Ac-S Z or Cnt Ac-J Z S-VOLs, you can use consistency group (CG) pair-split to keep BC Z S-VOLs consistent. The following images illustrate CG pair-split with Cnt Ac-S Z.
1. Cnt Ac-J Z restores the journal data that was created before you restored the split time to Cnt Ac-J Z S-VOLs (BC Z P-VOLs). NOTE: If a BC Z 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 Z journal data that you created before the split time to the Cnt Ac-J Z/BC Z 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.
Guidelines If you are sharing BC Z P-VOLs with Cnt Ac-S Z or Cnt Ac-J Z S-VOLs, use the following guidelines when performing a CG pair-split: • Maintain a consistent backup of the BC Z S-VOLs. For more information about maintaining consistent backups of volumes, see “Workflow for maintaining consistent Business Copy Z secondary volume backups” (page 54). • Ensure that all BC Z pairs in the CG are in “DUPLEX” or “PENDING”status.
The following are examples of when you can perform a CG pair-split based on status of the BC Z pairs in the CG: • Example 1 The are six BC Z pairs in a CG. 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 a CG pair-split, and doing so changes the status of all of the pairs in the CG to “Split/SUSPOP”.
• IBM PPRC, see the IBM documentation. • RAID Manager, see “RAID Manager” (page 8). Preparing Business Continuity Manager command devices workflow Use the following workflow to prepare the BCM command device that you will use to perform BC Z pair tasks: 1. Assign a volume as the BCM command device. 2. From the host, set an Missing Interrupt Handler (MIH) value of at least 45 (seconds) for the volume that is used as the BCM command device. CAUTION: devices.
3 Sharing Business Copy Z volumes You can share BC Z volumes with other HP software application volumes. This chapter discusses the requirements, restrictions, and guidelines for sharing volumes. Sharing Business Copy Z volumes with other XP7 software application volumes You can share BC Z volumes with the following HP software application volumes: • Cache Residency. For more information about sharing volumes with Cache Residency, see “Sharing volumes with Cache Residency” (page 26).
• Auto LUN. For more information about sharing volumes with Auto LUN, see “Sharing volumes with Auto LUN” (page 28). • Volume Retention. For more information about sharing volumes with Volume Retention, see “Sharing volumes and Volume Retention access attributes” (page 29). Sharing volumes with Cache Residency You can use volumes with Cache Residency settings as BC Z P-VOLs and S-VOLs. The Cache Residency settings can affect the performance of restoring pairs using Quick Restore.
Related topics • “Reverse resynchronization” (page 56). Sharing volumes with Concurrent Copy You can share BC Z S-VOLs with a Concurrent Copy primary volume (P-VOL). If you share a volume with Concurrent Copy, you cannot perform a reverse copy or quick restore operation. NOTE: Do not use Concurrent Copy secondary volumes (S-VOLs) for BC Z volumes. Related topics • “Reverse resynchronization” (page 56).
NOTE: If you are using PPRC, the storage system cannot distinguish pairs that you have split (“Split/SUSPOP” status) from pairs that are in the process of being Quick Split (“V-Split/SUSPVS” status). Do one of the following to check the pair status: • From a command prompt, run the following command: CSUSPEND To Steady Split, specify MFS00 for the PRIM parameter. In this case, the pair is not in the process of being Quick Split (“V-Split/SUSPVS” status). • Use the RWC.
Assigning BC Z volumes to volumes reserved for Auto LUN workflow Use the following workflow to assign BC Z volumes to volumes reserved for Auto LUN: 1. If you are assigning BC Z volumes other than the ones you can assign to volumes reserved for Auto LUN, delete the BC Z pair. Otherwise, skip this step. 2. Complete one of the following: 3. • Assign the BC Z volumes to a volume reserved for Auto LUN. • Migrate the volumes.
The following table shows whether you can perform BC Z pair and reserve attribute change tasks for volumes for which you set access attributes using Vol Ret Z.
4 Configuring Business Copy Z This chapter provides instructions for configuring BC Z. Workflow for setting up Business Copy Z Set up BC Z before you create the copy pair. Use the following workflow to set up BC Z: 1. (Optional) If you have created CGs, manage the CG IDs (see “Workflow for managing CG IDs for Business Copy Z” (page 31)). 2. Release the reserved mainframe consistency groups (see “Releasing reserved mainframe consistency groups” (page 33)). 3.
• “Releasing reserved mainframe consistency groups” (page 33). • For more information about CG pair-split, see “Workflow for consistency group pair-split” (page 52). Reserving consistency groups If you plan to use CGs in BCM/IBM PPRC, use RWC to reserve the CGs, which includes specifying the CTG ID. 1. In the RWC main window, in the resource tree, click Replications > Local Replication > Consistency Groups. 2. On the Consistency Groups tab, click Reserve Mainframe CTGs. 3.
5. In the Confirm window of the Reserve Mainframe CTGs wizard, for Task Name, type a name for the task and then click Apply. The CG is reserved. Releasing reserved mainframe consistency groups 1. In the RWC main window, in the resource tree, click Replications > Local Replication > Consistency Groups. 2. On the Consistency Groups tab, select the reserved mainframe CG you want to release and click Release Reserved Mainframe CTGs.
3. In the Release Reserved Mainframe CTGs window, for Task Name, type a name for the task and then click Apply. The reserved CG is released. System options that affect performance The following system options affect performance, which you can enable and disable: • Swap & Freeze. Enable this system option to suppress copy operations (the S-VOLs to remain unchanged) during pair restoration using Quick Restore. Differential data is not copied to the new S-VOL. • HOST I/O Performance.
NOTE: This processing-suppression/performance-improvement level requires more time to synchronize when you split a pair, which prolongs the time that the pair is in the process of being Quick Split (“V-Split/SUSPVS” status) or Steady Split (“SP-Pend/TRANS” status). If this is a problem, complete one of the following: – Minimize the time that the pair status is “DUPLEX”. – Use one of the other copy pace processing-suppression/performance-improvement levels.
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 Mainframe is selected. Default: Mainframe • 4. From the BC Z/FC Z/FCSE System Options table, select the system option you want to enable, click Enable. 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 Z pairs This chapter provides instructions for completing BC Z pair user tasks using the RWC and information on ATTIME Suspend using BCM. Workflow for managing Business Copy Z 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 Z pair user tasks. Use the following workflow to complete pair user tasks: 1. Check the pair status (see “BC Z pair status checks” (page 37)).
BC Z pair creation When you create a pair, the XP7 storage system performs an initial copy to copy data in the P-VOL to the S-VOL. You can create the BC Z pair and immediately split the pair so that you can access the S-VOL. You can also create a cascaded pairs. Creating a BC Z pair allocates the MP blade allocated to the P-VOL's LDEV to the S-VOL's LDEV. Related topics • “Prerequisites for creating BC Z pairs” (page 38). • “Creating BC Z pairs” (page 39). • “Initial copy workflow” (page 9).
• If the P-VOL is already paired with other S-VOLs (“DUPLEX” 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 69). • If you are concerned with host 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 Mainframe. • For Emulation Type, select the emulation type. For more information about the emulation types that are supported, see “Pair volumes and supported emulation types” (page 12). • For Number of Secondary Volumes, type the number of S-VOLs according to the P-VOL with the highest number of S-VOLs that you want to set up.
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 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. For more information about changing pair options, see “Changing BC Z pair options” (page 47). • (Optional) To change MU numbers, do the following: a. Select the line for the LDEV in the Selected Pairs table. b. Click Edit Mirror Units. c.
Suppressing update copy operations during pair creation You can suppress update copy operations after you create pairs. Suppressing update copy operations keeps the P-VOL and S-VOL unsynchronized and reduces the effect on host I/O performance. Prerequisite: The pair status is “DUPLEX”. • Enable the Swap & Freeze system option. For more information about how to enable this system option, see “Enabling system options” (page 35). Related topics • “System options that affect performance” (page 34).
Example 3: Workflow for simultaneously creating a pair with two S-VOLs and another with one S-VOL This example shows how to simultaneously create two pairs: one pair with two S-VOLs and the other with one S-VOL. You do this by creating two pairs, each having two S-VOLs, and then removing an S-VOL from the second pair. The following figure illustrates how to simultaneously create one pair with two S-VOLs and another pair with one S-VOL. Use the following workflow to create the two pairs: 1.
2. In the Select Primary Volumes window of the Create Pairs wizard, select the two LDEVs you want to use as the P-VOLs and then click Next. 3. In the Select Secondary Volumes window of the Create Pairs wizard, complete the following and then click Next: a. In the Available LDEVs table, select the four LDEVs you want to use as the S-VOLs for the pairs and click Set. Four pairs are listed in the Selected Pairs table. b. In the Selected Pairs table, remove the unwanted LDEV.
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 that you do not want to create and click More Actions > Suspend Pairs. 3. In the Suspend Pairs window, complete the following and then click Apply: • For Task Name, type a name for the task.
Related topics • “BC Z pair creation” (page 38). Changing BC Z pair options You can change the default setting for the Split Type and Copy Pace system options for all new pairs that you create. 1. Open the Select Secondary Volumes window of the Create Pairs wizard. 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. - Steady Split: Differential data is copied and then the pair is split.
• “BC Z pair resynchronization” (page 55). • “Sharing volumes with Auto LUN” (page 28). • “Workflow for ensuring data consistency” (page 49). • “Split Pairs wizard” (page 135). Pair splitting methods You can use one of the following methods to split pairs: • Steady Split: Copies the differential data to the S-VOL and then splits the pair. The split S-VOL is identical to the P-VOL at the time of the split. NOTE: • You cannot Steady Split pairs that are assigned to a CG.
1. 2. 3. Ensure the pair is not paired (“DUPLEX” status). Complete the update copy with a host I/O. Stop write operations from the host server to the P-VOL. Workflow for quickly splitting existing pairs Use the following workflow to quickly split an existing pair: 1. Stop host access to the P-VOL. 2. Split the pair. For more information about splitting BC Z pairs, see “Splitting BC Z pairs” (page 50). Splitting BC Z pairs 50 1.
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. The XP7 storage system copies the remaining differential data to the S-VOL in the background. - Steady Split: Copies the differential data to the S-VOL and then splits the new pair.
4. In the Confirm window of the Split 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 Z pair is split and the pair status changes from “V-Split/SUSPVS” or “SP-Pend/TRANS” to “Split/SUSPOP”.
NOTE: If you are sharing BC Z P-VOLs with Cnt Ac-S Z or Cnt Ac-J Z S-VOLs, for more information about the requirements and restrictions for using CG pair-split with shared volumes, see “Requirements, restrictions, and guidelines for using consistency group pair-split with shared BC Z and Cnt Ac-S Z or Cnt Ac-J Z volumes” (page 21). 4. Register the split time for the BC Z CG to indicate the time when you want to mirror the P-VOL data in the S-VOL.
Restrictions for consistency group pair-split Consistency group (CG) pair-split has the following restrictions: • To perform a CG pair-split on BC Z pairs, the pairs must have been created using RWC. You cannot use CG pair-split if the pairs were created using RAID Manager or BCM. • To perform a CG pair-split more than once, the status of all pairs in the CG must have changed to the status specified by the BCM YKEWAIT command.
Workflow for ensuring snapshot data is consistent with P-VOL data Use the following workflow to ensure the snapshot data is consistent with the P-VOL data and is ready to use in an BC Z pair user task: 1. Split the pair. To do this, complete one of the following: • If you are using RWC, split the BC Z pairs in the CG. The volume is split (“Split/SUSPOP” status). For more information about how to perform a CG pair-split , see “Workflow for consistency group pair-split” (page 52).
Related topics • “Forward resynchronization” (page 56). • “Reverse resynchronization” (page 56). Forward resynchronization You can use one of the following methods to forward resynchronize pairs, including the requirements and restrictions: • Normal Copy (Primary > Secondary). A full forward resynchronization from the P-VOL to the S-VOL. During a Normal Copy, only the P-VOL is accessible to hosts for read/write operations. • Quick Resync (Primary > Secondary).
For more information about sharing volumes with Concurrent Copy, see “Sharing volumes with Concurrent Copy” (page 27). • Quick Restore (Secondary > Primary). A partial restoration that does not copy the data but does the following: ◦ Swaps the P-VOL and S-VOLs including their RAID levels, HDD types, and Cache Residency settings. ◦ Pairs the volumes (“DUPLEX” status). ◦ Exchanges the P-VOL and S-VOL encryption statuses if an BC Z pair consists of encrypted volumes and a non-encrypted volume.
NOTE: 3. The pair can also be in the process of being Quick Split (“V-Split/SUSPVS” status). (Optional) If you are concerned about host I/O performance, check to make sure 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. 4. Resynchronize the pair. For more information about resynchronizing BC Z pairs, see “Resynchronizing or restoring BC Z pairs” (page 58).
pairresync 1. In the RWC main window, in the resource tree, click Replications > Local Replication > BC Pairs. 2. In the BC Pairs tab of the Local Replication window, select the pair you want to resynchronize and then click Resync Pairs. 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. Default: Normal Copy (Primary > Secondary) For more information about the types of BC Z pair resynchronization you can use, including complete descriptions of the types, see “Types of pair resynchronization” (page 55).
Related topics • “Resync Pairs wizard” (page 138). • “Types of pair resynchronization” (page 55). • “System options that affect performance” (page 34). Suppressing update copy operations during pair restoration You can suppress update copy operations when you restore pairs using Quick Restore. Suppressing update copy operations keeps the P-VOL and S-VOL unsynchronized and reduces the effect on host I/O performance. Prerequisite: The pair status is “DUPLEX”. • Enable the Swap & Freeze system option.
Workflow for deleting BC Z pairs Use the following workflow to delete an BC Z pair: 1. Ensure that all of the write I/O operations to the P-VOL have completed and that all secondary host applications that access the P-VOL have stopped. 2. Set the P-VOL offline. 3. If you are using RAID Manager to run commands, verify that the BC Z pair is unpaired and not in the process of being unpaired (“Deleting/TRANS” status). Complete the following: a. Verify that the volume is unpaired.
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 Z This chapter provides information and instructions to monitor and maintain the BC Z system. Monitoring the Business Copy Z system Monitor the BC Z 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 64). • “Monitoring BC Z pair activity and status” (page 65).
• In the RWC main window, in the resource tree, click Replication. Monitoring BC Z pair activity and status Monitor the BC Z 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.
Pair status Description Host status P-VOL access V-Split/SUSPVS The pair is in the process of being Quick Split. The differential data is copied to the S-VOL only in the background. P-VOL = “PPRI-PNDG” Read/write-enable Read and write. Can be varied online. S-VOL = Unpaired S-VOL access For more information about the Quick Split method of splitting pairs, see “Pair splitting methods” (page 49). Split/SUSPOP The pair has been split.
Related topics • “RAID Manager pair status names” (page 68). RAID Manager pair status names BCM pair status names can match the RWC pair status names. The following table shows a list of the RWC pair status names and the corresponding pair status name in BCM.
Related topics • “Unaffected S-VOL status and pair user tasks” (page 69) Unaffected S-VOL status and pair user tasks The BC Z 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.
2. 3. In the BC Pairs tab, select the pair and then click More Actions > View Pair Properties. In the View Pair Properties window, view the pair properties. Related topics • “Monitoring BC Z pair activity and status” (page 65). • “View Pair Properties window” (page 117). • “Local Replication window” (page 110). Monitoring BC Z 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 • “Local Replication window” (page 110) 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. 74 In the FS Pairs tab, view the list of FS pairs.
Related topics • “Local Replication window” (page 110). 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. The XP7 storage system stores a history of up to 1,024,000 of the last user tasks. The Description column in the Histories table shows the user tasks that you have completed. The following table shows the descriptions of the codes.
1. In the RWC main window, in the resource tree, click Replication. 2. In the Replication window, click View Histories. 3. In the Histories window, for Copy Type, select BC Z. Related topics • “Histories window” (page 122) 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.
Pair user tasks during system and device maintenance Check the following to determine whether pairs and pair user tasks are affected when you perform maintenance on physical and logical devices: • To prevent one or more pairs from suspending, perform XP7 cache maintenance during a period of low I/O usage. Reduce the I/O load before performing cache maintenance. • You can maintain the physical devices that contain LDEVs used by BC Z independently of pair user tasks and pair status.
7 Troubleshooting Business Copy Z This topic provides BC Z troubleshooting information. BC Z pair tasks and display troubleshooting The following table provides task and display troubleshooting information for BC Z pairs. Error Corrective action The RWC hangs, or BC Z pair task are not properly performed. • Make sure all BC Z requirements and restrictions are met. • Make sure the XP7 storage system’s power is on and is fully functional.
to BC Z tasks. The SIMs reported to the zSeries and S/390 host are logged in the SYS1.LOGREC dataset of the host operating system. SIMs are classified according to the following severities: service, moderate, serious, or acute. The larger the SIM number, the more important the message. All SIMs are recorded on the XP7 Storage SVP and shown in the Status window in the RWC. The following image shows a typical 32 byte SIM from the XP7 Storage. The host console shows SIMs by reference code (RC) and severity.
It was rejected due to SKEY=0x05, ASC=0x20,SSB=0xB9E1,0xB901 on Serial#(64015) SSB1 code: B9E1 SSB2 code: B901 • (If you are using RAID Manager or BCM operation log file) Example error code: 11:06:03-37897-10413- SSB = 0xb9a0,2089 SSB1 code: b9a0 SSB2 code: 2089 3. Locate the description of the SSB1/SSB2 error code combination in the following RAID Manager or BCM error code table. For more information about the errors that are not described in the table, contact HP Technical Support.
SSB2 code Description 2078 Because the specified P-VOL was also a Cnt Ac-J Z P-VOL for delta resync, one of the following errors occurred: • The Reverse Copy was rejected because the Cnt Ac-J Z pair status is not “Split/SUSPOP”. • The Quick Restore was rejected. 2079 The pair task was rejected because the specified S-VOL was also a Cnt Ac-J Z P-VOL for delta resync. 2086 The pair task was rejected because the initialization process is being performed.
SSB2 code Description 20C9 The emulation type of the P-VOL was 3390-A, and the pair task is rejected because of one of the following reasons: • Mainframe Fibre CHA is not mounted. • Mainframe Fibre CHA is all blocked.
SSB2 code Description • The pair task was rejected because the specified P-VOL and S-VOLs were a Compatible FlashCopy pair. • The reverse resynchronization was rejected because the pair of the specified P-VOL and S-VOLs is suspended (“Suspend/SUSPER” status). • The reverse resynchronization was rejected because the specified P-VOL and the S-VOL is the L2 pair. • The CG pair-split was rejected because some of the pairs in the CG were being resynchronized, split, or were already suspended.
SSB2 code Description 2336 The pair task was rejected because the emulation type of the specified P-VOL is different from the emulation type of the S-VOL. For more information about pair volumes and supported emulation types, see “Pair volumes and supported emulation types” (page 12). 2337 The pair operation was rejected because the volume you specified as the P-VOL had already been an S-VOL.
SSB2 code Description 2358 The pairresync RAID Manager command was rejected because the volume you specified as the S-VOL is the P-VOL of the splitting pair. 235B The volume you specified as a P-VOL is a Cnt Ac-S Z P-VOL. The reverse resynchronization was rejected because the Cnt Ac-S Z pair is not suspended (“Suspend/SUSPER” status) or split (“Split/SUSPOP” status). 235C The volume you specified as the P-VOL is a Cnt Ac-S Z S-VOL.
SSB2 code Description 23A8 The reverse resynchronization was rejected because the volume you specified is the P-VOL for XRC. 23A9 The pair was not restored because the volume you specified is the P-VOL for CC. 23AA The pair task was rejected because the volume you specified as the S-VOL is the P-VOL for XRC. 23AB The pair task was rejected because the volume you specified as the S-VOL is the P-VOL for CC.
If you cannot change the status, the Pairsplit RAID Manager command can end abnormally with the error code EX_EWSTOT, which indicates timeout occurrence. You cannot change the pair status during a timeout. Remove these factors then complete the following: 1. Resynchronize the pairs. To do this, run the following RAID Manager command: pairresync 2. Split the pairs. To do this, run the following RAID Manager command: Pairsplit Related topics • “Workflow for managing CG IDs for Business Copy Z” (page 31).
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: 90 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 Business Copy Z pair user tasks using IBM PPRC This appendix includes IBM PPRC requirements, commands, and examples. You can perform BC Z pair user tasks using TSO PPRC and ICKDSF PPRCOPY commands. Note: This appendix does not include all instructions for using the TSO and ICKDSF commands. For more information about these commands and using PPRC, see the IBM user documentation.
Because BC Z and Cnt Ac-S Z support PPRC, a failure to meet these requirements can result in a PPRC command being run on a Cnt Ac-S Z pairs instead. Perform Storage System Function commands and Business Copy Z With Perform Storage System Function (PSF) commands, you can run PPRC commands and user requests in the XP7 storage system. The following table shows how PSF commands interact with BC Z pairs.
CESTPAIR parameters and examples The following table describes the CESTPAIR PPRC command parameters used to create pairs. Parameter Value Description DEVN Device number NA PRIM Primary volume: SSID, serial number, channel connection address, and CU number. You must use these parameters to successfully run the command. To request the Add and Split, set MSF00 instead of a serial number. Note: This parameter is valid for MODE(COPY) or MODE(NOCOPY) only.
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. You must use these parameters to successfully run the command. To request an Add and Split, set MSF00 instead of a serial number. Note: This parameter is valid for MODE(COPY) or MODE(NOCOPY) only. To assign a pair to a CG, set MAnn0 instead of a serial number. Note: nn is a CTG ID.
• Run the one of the following commands to the P-VOL: • (For PPRC) CSUSPEND For more information about the parameters and examples for using this command to split pairs, see “CSUSPEND parameters and examples” (page 95). • (For PPRCOPY) PPRCOPY SUSPEND For more information about the parameters and examples for using this command to split pairs, see “PPRCOPY SUSPEND parameters and examples” (page 95).
Parameters Value Description PRIMA Not Applicable Not used by BC Z. LSS P-VOL or S-VOL CU number. NA * If you are in the process of copying the pair (“PENDING” status), Quick Split can end abnormally (reporting CC = 12). If this occurs, wait until the copy operation ends. For more information about the prerequisites for Quick Split, see “Pair splitting methods” (page 49).
Parameter Value Description CRIT Not applicable Not used by BC Z. MSGREQ YES MSGREQ function is applicable. (For a resync request on all pairs in a CG) To prevent the job from ending abnormally (reporting CC = 8), do not use the MSGREQ function. ONLINSEC* NO MSGREQ function is not applicable. YES You can Normal Copy when the S-VOL is online and offline. You can reverse resynchronize the pair when the P-VOL and S-VOL are online and offline. NO You cannot Normal Copy when the S-VOL is online.
Parameters Value Description MODE RESYNC Re-establish a split or suspended pair. PACE 1-255 Copy speed is medium, regardless what is specified for the PACE parameter. CRIT Not applicable Not used by BC Z. MSGREQ YES NO To prevent the command from ending abnormally (reporting CC = 12), do not specify the parameter if MODE(RESYNC) is set. LSS P-VOL or S-VOL CU number. NA ONLINSEC* YES You can Normal Copy when the S-VOL is online or offline.
Related topics • “Splitting pairs with CSUSPEND and PPRCOPY SUSPEND” (page 94). CDELPAIR parameters and examples The following table describes the CDELPAIR PPRC command parameters used to delete pairs. Parameter Value Description DEVN Device number NA PRIM Primary volume: SSID, serial number, channel connection address, and CU number. You must use these parameters to successfully run the command. To delete all pairs in a CG, set this parameter to MAnn0. Note: nn is the CTG ID.
Consistency group pair user tasks using IBM PPRC With IBM PPRC, you can set up, split, resynchronize, and delete pairs in a CG, which performs the user task on all the pairs at the same time. Workflow for assigning pairs to consistency groups You can use RAID Manager or BCM/IBM PPRC commands to assign multiple BC Z pairs to a CG. This workflow describes how to assign pairs to CGs using BCM/IBM PPRC commands. Use the following workflow to assign pairs to CGs using BCM/IBM PPRC commands: 1.
1. Delete all of the pairs in the CG. To do this, run one of the following commands: • (For PPRC) CDELPAIR • (For PPRCOPY) PPRCOPY DELPAIR All of the pairs in the CG are deleted. 2. Check the pair status to make sure that the volumes are unpaired. To do this, run one of the following commands: • (For PPRC) CQUERY • (For PPRCOPY) PPRCOPY QUERY Showing pair status and volume information with CQUERY TSO and QUERY ICKDSF You can run the commands to the P-VOL or S-VOL.
If you run the CQUERY TSO PPRC command to the S-VOL in a CG, the output for the SECONDARY serial number is shown in the following format: 00|S|@|000|30158 where: • S indicates that it is assigned to a CG. • @ indicates CG pair-split. • 30158 is the serial number. QUERY ICKDSF parameters and examples The following table shows the QUERY ICKDSF command parameters used to show pair information. Parameters Value DDNAME, SYSNAME, or UNITADDRESS DDNAME = dname = JCL statement identifying the volume.
The following table shows the field descriptions of the output resulting when you run the CQUERY TSO PPRC and QUERY ICKDSF PPRCOPY commands. 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 S-VOL. STATE Pair status PATH STATUS Invalid for BC/SS; “Active” is shown. CRIT Invalid for BC/SS; “NO” is shown. CGRPLB Invalid for BC/SS; “NO” is shown.
Field Description PERCENT OF COPY COMPLETE Invalid for BC/SS; “100%” is shown. SUBSYSTEM Invalid for BC/SS, not valid content. WWN Invalid for BC/SS, not valid content. LIC LEVEL Invalid for BC/SS, not valid content. When the MCU-RCU path for Cnt Ac-S Z is created on the CU where a BC Z pair exists, MCU-RCU path information is shown.
B Interface support for BC Z user tasks and options This appendix lists BC Z user tasks and options, and BC Z CG user tasks and options, and the interfaces that support them. Supported Business Continuity Manager and PPRC user tasks and options The following table lists the BC Z pair user tasks and options that BCM and PPRC support. The following table shows the user tasks by user interface.
Supported Business Copy Z consistency group user tasks and options The following table lists BC Z CG user tasks and options that RWC and BCM/IBM PPRC support. The following table shows the CG user tasks by user interface, RWC or RAID Manager.
CG user task System Option BCM IBM PPRC TSO command ICKDSF command NO2 NO3 User specifies the CTG ID YKMAKE CESTPAIR PPRCOPY ESTPAIR System allocates the CTG NO ID NO NO No options YKSUSPND NO NO Steady Split YKSUSPND NO NO Quick Split YKSUSPND NO NO (If you share BC Z volumes with Cnt Ac-J) Steady Split YKSUSPND NO NO (If you share BC Z volumes with Cnt Ac-J) Quick Split YKSUSPND NO NO Cancel ATTIME Suspend No options YKSUSPND NO NO CG pair-split (undefined split time)
C Business Copy Z GUI reference This appendix describes BC Z 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. Edit Options button (for Remote Replication) Click to open the Edit Remote Replica Options window. Edit Options - SCP Time Click to open the Edit SCP Time window.
Item Description Values: • Model/Serial Number: The model type and serial number of the virtual storage machine. • LDEV ID: The identification number of the volume’s virtual LDEV. If no virtual LDEV ID is assigned, a blank displays. • Device Name: The name of the volume’s virtual device, in a combined format of “virtual emulation type”, “number of virtual LUSE volumes”, and “virtual CVS attribute”. Each of these three items displays only if it is specified. If none of them are specified, a blank displays.
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.
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, 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. For BC Z, a hyphen (-) is shown. • Host Group Name: The P-VOL’s host group name For BC Z, a hyphen (-) is shown. • LUN ID: The P-VOL’s LUN identifier.
Item Description • Virtual Device Name*: The name of the P-VOL’s virtual device, in a combined format of “virtual emulation type”, “number of virtual LUSE volumes”, and “virtual CVS attribute”. Each of these three items displays only if it is specified. If none of them are specified, a blank displays. • Virtual SSID*: The virtual SSID of the P-VOL. If no virtual SSID is specified, a blank displays. Copy Type The pair type.
Item Description If you have not set a copy pace, this item is blank. CTG ID* The identifier of the consistency group to which the BC/SS/BC Z pair is assigned. Mirror Unit* The mirror unit number. Topology ID The LDEV’s topology identifier. Example: 00.00.00 (MU0-MU1) Create Pairs button Click to open the Create Pairs wizard. Split Pairs button Click to open the Split Pairs wizard. Resync Pairs button Click to open the Resync Pairs wizard. More Actions Click to show options.
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. Use this window to search for P-VOL information. • 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 P-VOL’s host group name. • LUN ID: The LUN ID of the P-VOL LDEV’s LUN path.
Item Description More Actions Click to show options. Options: • View Pair Synchronous Rate: Click to open the View Pair Synchronous Rate window. • View Pair Properties: Click to open the View Pair Properties window. • Delete Pairs: Click to open the Delete Pairs window. • Export: 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.
Item Description • Mainframe Reserved: The CG is reserved for use with BCM or IBM PPRC. • Free: The CG is not being used and is not reserved. • (Changing...): The status is in the process of changing. Number of Pairs The number of pairs assigned to the CG. Reserve Mainframe CTGs button Click to open the Reserve Mainframe CTGs window. Release Reserved Mainframe CTGs button Click to open the Release Reserved Mainframe CTGs window.
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 for Mainframe 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.
Item Description Secondary Volume The S-VOL information. Values: • LDEV ID: The S-VOL’s LDEV identifier. • LDEV name: The S-VOL’s LDEV name. • Provisioning type: The S-VOL’s provisioning type, which can be one of the following: ◦ Basic: Internal volume ◦ THP: THP V-VOL ◦ External: External volume ◦ Snapshot: FS volume • Emulation type: The S-VOL’s emulation type. • Capacity: The S-VOL’s volume capacity. • CLPR: The S-VOL’s CLPR number.
Item Description The system option that determines the rate at which you want the XP7 storage system to copy data. Mirror Unit The mirror unit number. View Pair Synchronous Rate window Use this window to view the percentage of synchronized data between the P-VOL and S-VOL. This window includes the Pairs table. For more information about using this window, see “Monitoring BC Z pair synchronous rates” (page 70). The following image shows this window.
Item Description • 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. • Virtual Device Name: The name of the P-VOL’s virtual device, in a combined format of “virtual emulation type”, “number of virtual LUSE volumes”, and “virtual CVS attribute”.
Item Description Mirror Unit The mirror unit number. Refresh button Click to update the information in the Pairs table. Histories window Use this window to monitor the pair tasks that you have performed. For more information about monitoring pairs, see “Monitoring pair user task history” (page 75). Setting fields The following table shows the setting fields for this window. Item Description Copy Type The pair type.
Item Description Secondary Volume The S-VOL information. Values: • LDEV ID: The S-VOL’s LDEV identifier. • Provisioning type: The S-VOL’s provisioning type, which can be one of the following: ◦ Basic: Internal volume ◦ THP: THP V-VOL ◦ External: External volume Description Code The code for the type of operation performed. Description The description of the operation. Export button Click to open a dialog for downloading table information to a tab-separated values (TSV) file.
Histories table for Compatible FlashCopy or Compatible FlashCopy SE This table is shown on the FC 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. Source Volume The source volume information. Values: • LDEV ID: The source volume’s LDEV identifier.
Consistency Group Properties table The following table shows the items in this table. Item Description CTG ID The BC Z pair’s CG identification number. Status The CG status. Values: • BC Used: The CG is in use by BC/SS. • BC Z Used (RAID Manager): BC Z is using the CG. • 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. • Mainframe Reserved: The CG is reserved for use by BCM or IBM PPRC.
Item Description • Capacity: The P-VOL’s volume capacity. • 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 Mirror Unit The mirror unit number. Detail button Click to open the Pair Properties window. Create Pairs wizard Use this wizard to create pairs and to specify new pair details. This wizard includes the following windows: • “Select Pair Configuration window” (page 127) • “Select Primary Volumes window” (page 128) • “Select Secondary Volumes window” (page 130) • “Confirm window” (page 133) For more information about using this wizard, see “Creating BC Z pairs” (page 39).
Item Description Split Type BC and BC Z only. 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. Any remaining differential data is copied to the S-VOL in the background. • Steady Split: Differential data is copied and then the pair is split. Default: Non Split Copy Pace BC and BC Z only.
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. 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.
Item Description Provisioning Type The LDEV’s provisioning type. Values: • Basic: Internal volume • DP: DP-VOL • External: External volume Emulation Type BC and BC Z only. The LDEV’s emulation type. Capacity The LDEV’s capacity. CLPR The LDEV’s CLPR number. Number of Secondary Volumes The total number of S-VOLs assigned to the P-VOL. This value includes the volumes for pairs that you are creating, volumes in existing pairs. For an L1 pair, this value does not include the number of L2 S-VOLs.
Item Description Values: • Selected: Paired volumes are not shown in the list. • Cleared: Paired volumes are shown in the list. Default: Selected Port ID list BC and FS only. Filters LDEVs in the Available LDEVs table according to the port ID. Host Group Name list BC and FS only. Filters LDEVs in the Available LDEVs table according to the host group name. Default: Any Set button Click to move an LDEV that you have selected in the Available LDEVs table to the Selected Pairs table.
Item Description • External: External volume • Snapshot: FS volume CLPR The LDEV’s CLPR number. Number of Secondary Volumes BC only. The number of S-VOLs that the selected P-VOL has been assigned so far. Detail button Click to open the LDEV Properties window, which contains additional information for the selected LDEV. Selected Pairs table The following table shows the items in this table of the Select Secondary Volumes window of the Create Pairs wizard.
Item Description Mirror Unit BC and BC Z only. The mirror unit number. Split Type BC and BC Z only. 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. Any remaining differential data is copied to the S-VOL in the background. • Steady Split: Differential data is copied, and then the pair is split. Copy Pace BC and BC Z only.
Selected Pairs table The following table shows the items in this table in the Confirm window of the Create 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. • Port ID: Port name of the P-VOL LDEV’s LUN path. • Host Group Name: Host group name of the P-VOL LDEV’s LUN path. • LUN ID: LUN identifier of the P-VOL LDEV's LUN path. • Emulation Type: The P-VOL’s emulation type.
Item Description Values: • Slower: Improved host I/O performance but slower processing speed. • Medium: Average processing speed and host I/O performance. • Faster: Faster processing speed but slower host I/O performance. Mirror Unit BC and BC Z only. The mirror unit number. Split Pairs wizard Use this wizard to split pairs.
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 status for the pair. For more information about pair status, see “The RWC pair status names and descriptions” (page 66). Secondary Volume The S-VOL information.
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. 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.
Item Description Values: • Slower: Improved host I/O performance but slower processing speed. • Medium: Average processing speed and host I/O performance. • Faster: Faster processing speed but slower host I/O performance. Secondary Volume The S-VOL information. Values: • 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.
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 I/O performance but slower processing speed. • Medium: Average processing speed and host I/O performance. • Faster: Faster processing speed but slower host 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 66). 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 66). 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 Z pair options” (page 47). 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.
This window includes the following tables: • Available Consistency Groups table • Selected Consistency Group table For more information about using this window, see “Workflow for managing CG IDs for Business Copy Z” (page 31). The following image shows this window. Available and Selected Consistency Groups tables This table is shown on the Reserve Mainframe CTGs window of the Reserve Mainframe CTGs wizard.
The following table shows the items on the Selected Consistency Groups table. Item Description CTG ID The BC Z pair’s CG identification number. Status The status of the CG that is reserved for BC Z. Value: Mainframe Reserved Release Reserved Mainframe CTGs window Use this window to release mainframe CGs. This window opens when you click Release Reserved Mainframe CTGs on the Consistency Groups tab of the Local Replication window.
Edit Local Replica Options window Use this window to specify options that affect host I/O performance. This is the first window of the Edit Local Replica Options wizard. For full information, see “System options that affect performance” (page 34). 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.
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. Edit SCP Time window State Change Pending (SCP) time is the interval that I/O for the host is suspended. SCP time is a value you set and is shared between Cnt Ac-S Z and FC Z. The following image shows this window.
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 configuration, 44 B BC, BC Z - role required to perform operations, 31 BCM, requirements for, 11 Business Continuity Manager, 23 C Cache Residency Manager, 26 calculating number of pairs, 14 command device for BCM, 24 Compatible XRC, 26 Concurrent Copy, 27 configuration workflow, 31 consistency group releasing, 33 reserving, 31 Consistency group operations using Remote Web Console, RAID Manager, BCM, PPRC, 106 consistency group pair-split, 52 consistency group pair-split troubleshoo
quick split, 17, 49 Volume Migration, 28 R W RAID level, 11 RAID Manager description, 8 error codes, 80 pair statuses, 68 requirements for, 11 related documentation, 88 releasing a reserved consistency group, 33 Remote Web Console, 8 reserving a consistency group, 31 Resource Partition, 27 resync type, 55 resynchronizing pairs, 55 reverse copy, 56 role required for BC, BC Z operations, 31, 37 web sites HP subscription service, 88 websites HP , 89 product manuals, 88 S service information messages, 78
