HP XP24000/XP20000 Business Copy Software User Guide Abstract This guide explains how to use HP XP Business Copy Software to create nondisruptive, high-speed internal copies of information stored by open-systems hosts on HP Storage Works XP24000 and XP20000 disk arrays and attached heterogeneous external storage systems. Topics include how to create, split, suspend, resynchronize, and troubleshoot XP Business Copy pairs using the Remote Web Console web client.
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Contents 1 Overview of HP XP Business Copy Software...................................................5 XP Business Copy.....................................................................................................................5 Business Benefits.......................................................................................................................6 Feature Highlights.....................................................................................................................
Cautions on Maintaining the Devices....................................................................................48 Cautions on Maintaining the Cache.....................................................................................49 Cautions on Switching Off the Power Supply..........................................................................49 Installing XP Business Copy......................................................................................................
1 Overview of HP XP Business Copy Software This chapter provides an overview of HP XP Business Copy Software for HP XP disk arrays. Topics include the following: • Page 5 • Page 6 • Page 6 Unless otherwise specified, the term storage system in this guide refers to the following disk arrays: • HP XP24000 Disk Array • HP XP20000 Disk Array The GUI illustrations in this guide were created using a Windows computer with the Internet Explorer browser.
Business Benefits Ensure Business Continuity • Shortens restart and recovery times with the consistency-group function, which provides multivolume, point-in-time copies for applications and databases that share or span multiple volumes • Reduces recovery from data corruption time dramatically through the Business Copy QuickRestore feature, which allows an immediate restore to a disk-resident, point-in-time data copy • Replicates large data volumes without having an impact on service levels, timing out,
2 About XP Business Copy Operations This chapter describes XP Business Copy operations. • Page 7 • Page 8 • Page 19 • Page 22 XP Business Copy Components A system using XP Business Copy usually contains the following components. • Pair of volumes (P-VOL and S-VOL) • Licensed XP Business Copy program product Figure 1 (page 7) shows a typical XP Business Copy configuration using Remote Web Console.
You operate XP Business Copy from the Remote Web Console computer, and copy volumes in the storage system. A volume that has original data is called a P-VOL, and a volume to which the data is copied is called an S-VOL. A pair of the P-VOL and the S-VOL made by XP Business Copy is called an XP Business Copy pair. You may operate XP Business Copy directly from the host if you use RAID Manager. For details, see (page 8).
or PSUS(SP) status. For details about pair status, see (page 21). You can reserve up to 16,384 volumes in one storage system. Create Pair Operation To create an XP Business Copy pair, the P-VOL must be in SMPL status. You may set a reserve attribute on the S-VOL before creating a pair. You can also create a pair with an unreserved SMPL volume. For details about how to create XP Business Copy pairs, see (page 66) and (page 77).
Figure 2 Cascade Pairs The first cascade layer (L1) is the original XP Business Copy pair. In case of cascaded pairs, the P-VOL of the L1 pair is called root volume, and the S-VOL is called node volume. The P-VOL of the second cascade layer (L2) is the node volume of L1 pair, and the S-VOL of the L2 pair is called leaf volume.
copies (S-VOLs) of one XP Business Copy P-VOL. Figure 2 (page 10), MU# refers to the MU number, which identifies each MU. For example, MU# = 1 under the S-VOL1 means that the MU number of the P-VOL, that pairs with the S-VOL, is 1. Combination of L1 and L2 pairs with the HP XP Continuous Access Software volumes is allowed; however, node volumes and leaf volumes are both considered secondary volumes (S-VOLs) by XP Continuous Access.
Figure 4 Update Copy Operation CAUTION: If the copy operation is completed without any host I/O, the data in the P-VOL and the data in the S-VOL may not be the same. Whether the P-VOL and the S-VOL have the same data depends on the condition of the storage system. To make the P-VOL data and the S-VOL data equal, split the pair and make the pair status PSUS. • Update copy operations are not performed for pairs with the following status: COPY(PD), COPY(SP), PSUS(SP), PSUS, COPY(RS), COPY(RS-R), and PSUE.
Quick Split and Steady Split in the Pairsplit dialog box. However, you need RAID Manager to perform At-Time Split. • Pairsplit by Quick Split: When you specify Quick Split, the pair status changes to PSUS(SP). The S-VOL is available immediately for read and write I/Os (even though it is still reserved). The entire P-VOL data or differential data will be copied to the S-VOL in the background.
operation. For further information on RAID Manager, see the HP XP RAID Manager User Guide. • Triggers for the change of pair status to PSUS The performance in the state of PSUS(SP) or COPY(SP) is different depending on the value of system option mode 459 (ON or OFF, OFF by default) and whether the S-VOL or the volume in a pool that is associated with the S-VOL is an external volume or internal volume. Table 1 Performance in PSUS(SP) or COPY(SP) vs. SOM 459 and S-VOL.
status during a normal pairresync operation is COPY(RS), and the P-VOL remains accessible to all hosts for both read and write operations during a normal pairresync. • Quick Resync (forward pairresync in fast speed) The quick pairresync operation (see Figure 6 (page 16)) first reads the differential bitmap of P-VOL and S-VOL, and changes the pair status to PAIR. The differential data based on the differential bitmap will be copied when update copy operations are performed for the pair in PAIR status.
Figure 6 Forward Pairresync Operations CAUTION: If the copy operation is completed without any host I/O, the data in the P-VOL and the data in the S-VOL may not be the same. Whether the P-VOL and the S-VOL have the same data depends on the condition of the storage system. To make the P-VOL data and the S-VOL data equal, split the pair and make the pair status PSUS.
be the P-VOL) are resynchronized when update copy operations are performed for pairs in the PAIR status. The pair status during a quick restore operation is COPY(RS-R) until the volume map change is complete. The P-VOL and S-VOL become inaccessible to all hosts for write operations during a quick restore operation. ◦ After quick restore operation is executed, the Remote Web Console window may display old configuration information on components such as logical volumes (LDEVs).
Figure 7 Backward Pairresync Operations • The P-VOL remains read-enabled during the quick restore operation only to enable the volume to be recognized by the host. The data on the P-VOL is not guaranteed until the quick restore operation is complete and the status changes to PAIR. • During reverse or quick restore pairresync, you cannot perform paircreate, pairsplit, or pairresync for any other pair that shares the same P-VOL (pairsplit-S and pairsplit-E are allowed).
properly resynchronized in the desired direction, and also greatly reduces the time needed to resynchronize the pair. • Pairresync for PSUE pair When a normal/quick pairresync operation is performed on a suspended pair (status = PSUE), the storage system copies all data on the P-VOL to the S-VOL, since all P-VOL tracks were regarded as difference data when the pair was suspended.
Figure 8 XP Business Copy Pair Status Transitions 1. 2. 3. 4. If a volume is not assigned to an XP Business Copy pair, the volume's status is SMPL. Select the SMPL volumes for P-VOL and S-VOL to create an XP Business Copy pair. When you create an XP Business Copy pair, the initial copy operation starts. During the initial copy operation, the status of the P-VOL and S-VOL changes to COPY(PD). When the initial copy operation is complete, the pair status becomes PAIR.
operation is complete, the pair status changes to PSUS to enable you to access the split S-VOL. The update copy operation is not performed on the pairs that have status PSUS. • 5. If the storage system cannot maintain PAIR status for any reason, or if you suspend the pair (pairsplit-E), the pair status changes to PSUE. When you start a pairresync operation, the pair status changes to COPY(RS) or COPY(RS-R). When the pairresync operation is complete, the pair status changes to PAIR.
Table 2 XP Business Copy Pair Status (continued) Pair Status Description S-VOL Access RAID Manager Display so that the pair can be resynchronized quickly. COPY(RS) The pairresync operation has been Read only. accepted normally. The pairresync operation triggers a copy operation.1 When a split pair is resynchronized in normal mode, the storage system copies only the P-VOL differential data to the S-VOL.
Copy pair with the Swap&Freeze option, update copy operations are suppressed and not performed for pairs in the PAIR status after the quick restore operation. If the quick restore operation is performed without the Swap&Freeze option, the P-VOL and S-VOL are resynchronized when update copy operations are performed for pairs in the PAIR status. Make sure that the Swap&Freeze option remains in effect until the pair status changes to PAIR after the quick restore operation.
Threshold option temporarily stops the copy operations when the load of the storage system is heavy. If you set this option, you can minimize the degradation of host I/O performance by temporarily stopping XP Business Copy copy operations when the storage system load is heavy. XP Business Copy has another option called the Host I/O Performance option, which maintains host I/O performance (response).
3 Interoperability with Other Products and Functions XP Business Copy supports concurrent operations with the following data management functions: • Page 25 • Page 25 • Page 25 • Page 25 • Page 26 • Page 27 • Page 27 • Page 30 • Page 33 • Page 35 • Page 37 Open Volume Management Virtual LUN volumes can be assigned to XP Business Copy pairs, provided that the S-VOL has the same capacity as the P-VOL.
Table 4 Access Attribute and Availability as a Volume of XP Business Copy Pair Access Attribute Availability as a Volume of XP Business Copy Pair P-VOL S-VOL Read/Write Yes Yes Read Only (Volume) Yes Yes Protect Yes Yes S-VOL Disable Yes No Table 5 (page 26) describes whether you can or cannot perform the XP Business Copy operations to the volume with S-VOL Disable attribute.
HP XP External Storage Software XP Business Copy operations can also be performed in conjunction with XP External Storage operations to create pairs with the external volumes. For information about the external volumes, see the HP XP24000/XP20000 External Storage Software User Guide. XP Continuous Access XP Continuous Access volumes can be assigned to XP Business Copy pairs and vice versa.
Figure 11 Shared Volume of XP Business Copy and XP Continuous Access: P-VOL/S-VOL CAUTION: When you use an XP Business Copy P-VOL with an XP Continuous Access S-VOL as shown in Figure 11 (page 28), the write operation to the XP Continuous Access P-VOL takes extra time. Especially, when the XP Business Copy pair is in the PSUS(SP) status, the write operation to the XP Continuous Access P-VOL may take time according to the time for copying process of the XP Business Copy pair.
Figure 12 Shared Volumes of XP Business Copy and XP Continuous Access: P-VOL/P-VOL and P-VOL/S-VOL Figure 13 (page 29) illustrates a volume functioning as both an XP Business Copy S-VOL and an XP Continuous Access P-VOL, which allows you to use XP Continuous Access to provide asynchronous remote copy. Figure 13 Shared Volume of XP Business Copy and XP Continuous Access: S-VOL/P-VOL • This configuration does not allow XP Business Copy and XP Continuous Access to copy at the same time.
Quick Restore when a volume is shared with an XP Business Copy pair and an XP Continuous Access pair. Table 6 Quick Restore Operation When Volume is Shared with XP Business Copy Pair and XP Continuous Access Pair Shared Volume Quick Restore Operation on XP Business Copy Pair XP Business Copy XP Continuous Access P-VOL P-VOL Yes S-VOL Yes P-VOL Yes S-VOL XP Continuous Access Journal XP Continuous Access Journal volumes can be assigned to XP Business Copy pairs and vice versa.
Figure 15 Shared Volume of XP Business Copy and XP Continuous Access Journal: P-VOL/S-VOL CAUTION: • When you share an XP Business Copy P-VOL with an XP Continuous Access Journal S-VOL as shown in Figure 15 (page 31), the write operation to the XP Continuous Access Journal P-VOL take extra time.
Figure 16 Shared Volumes of XP Business Copy and XP Continuous Access Journal: P-VOL/P-VOL and P-VOL/S-VOL Figure 17 (page 32) illustrates a volume that is functioning as both an XP Business Copy S-VOL and an XP Continuous Access Journal P-VOL, which allows you to use XP Continuous Access Journal to provide remote copies of XP Business Copy S-VOLs.
Table 7 Quick Restore Operation When Volume Is Shared with XP Business Copy Pair and XP Continuous Access Journal Pair Shared Volume Quick Restore Operation on XP Business Copy Pair XP Business Copy XP Continuous Access Journal P-VOL P-VOL Yes S-VOL Yes P-VOL Yes S-VOL XP Continuous Access and XP Continuous Access Journal Although XP Continuous Access and XP Continuous Access Journal can each share volumes with XP Business Copy, they cannot share XP Business Copy volumes in some combinations.
Figure 19 XP Business Copy, XP Continuous Access, and XP Continuous Access Journal: Combination That Is Allowed (Example 2) If the combination of Figure 18 (page 33) or Figure 19 (page 34) is used, you cannot perform Quick Restore on XP Business Copy pairs.
Table 8 Availability of XP Business Copy Operation in the XP Continuous Access Synchronous Secondary Site Cnt Ac Pair Status Status of Cnt Ac J Pair XP Business Copy Operation Paircreate Pairsplit Pairsplit-E Pairsplit-S for delta resync PAIR HOLD Pairresync Normal Copy Quick Resync Reverse Copy Quick Restore Yes Yes Yes Yes Yes Yes No No COPY Yes Yes Yes Yes Yes Yes No No PSUS Yes Yes Yes Yes Yes Yes Yes No SSWS Yes Yes Yes Yes Yes Yes Yes No Yes Yes Yes Ye
Table 11 Relation between Increase of TP-VOL Capacity and XP Business Copy Pair Operations XP Business Copy P-VOL XP Business Copy S-VOL XP Business Copy Pair Operations Volumes Increase of Capacity Volumes Increase of Capacity Pair Create Pair split, Suspend Pair, or Delete Pair Resynchronize Pair TP-VOL The capacity is increasing. TP-VOL The capacity is increasing. NG1 NG2 NG2 The capacity has already been increased or never been increased.
Table 12 Relation between Increase of TP-VOL Capacity and Reserve Volume Operations Target Volumes Volumes TP-VOL Normal volume3 XP Business Copy Reserve Volume Operations Increase of Capacity Set Reserve Attribute 1 Release Reserve Attribute The capacity is increasing. NG NG2 The capacity has already been increased, or has never been increased. Yes Yes None Yes Yes 1 Confirm that the capacity has already been increased, and then specify the reserve attribute again.
4 Preparing for XP Business Copy Operations This chapter describes requirements for using XP Business Copy, installation procedure of XP Business Copy, and calculation of the number of pairs that XP Business Copy can create. Read this chapter before you start the operation of XP Business Copy.
• Emulation type Only volumes of the following emulation types can be used: OPEN-3, OPEN-8, OPEN-9, OPEN-E, OPEN-K, OPEN-L, or OPEN-V. • Logical DKC (LDKC), CU, LDEV number You can use volumes whose LDKC:CU:LDEV (a combination of an LDKC number, a CU number, and an LDEV number) is within the range of 00:00:00 to 00:FE:FF, or 01:00:00 to 01:FE:FF. • MU number In case of an L1 pair, you can use 0, 1, or 2 as an MU number. In case of an L2 pair, you can use 1 or 2 as an MU number.
Table 14 The volumes and capacities to be counted as the usage capacity of XP Business Copy Volume to be counted Capacity to be counted Program product The kind of the volumes Normal-VOL or DP-VOL XP Business Copy P-VOL Normal VOL Volume capacity DP-VOL Pool capacity that the volume uses Normal VOL Volume capacity DP-VOL Pool capacity that the volume uses Normal VOL Volume capacity DP-VOL Pool capacity that the volume uses Normal VOL Volume capacity DP-VOL Pool capacity that the volume
Figure 21 Total Capacity of XP Business Copy Volumes (Example 1) Figure 22 (page 41) illustrates one XP Business Copy pair. In this case, the total capacity of XP Business Copy volumes in use will be 2. Figure 22 Total Capacity of XP Business Copy Volumes (Example 2) Figure 23 (page 41) illustrates XP Business Copy pairs (L1 pairs and L2 pairs). In this case, the total capacity of XP Business Copy volumes in use will be 5.
Table 15 Additional Shared Memory for Differential Tables Additional Shared Memory for XP Business Copy Number of Differential Tables No additional shared memory for XP Business Copy 0 0 1,024 Additional shared memory for XP Business Copy is installed 26,176 8,192 16,384 Extension 1 57,600 8,192 16,384 Extension 2 104,768 16,384 65,536 Extension 31 146,688 16,384 131,072 Extension 41 209,600 16,384 131,072 1 Number of Pair Tables Number of Volumes in Storage system This can be us
Snapshot User Guide to calculate the number of differential tables and pair tables that are required for XP Snapshot. Assuming that only XP Business Copy uses differential tables and pair tables, this section describes how to calculate the number of differential tables and pair tables required for one XP Business Copy pair, and the conditions you need to consider when calculating the number of XP Business Copy pairs that can be created.
Table 17 Number of Control Cylinders According to Emulation Types Emulation Type Number of the Control Cylinders OPEN-3 8 (5,760 KB) OPEN-8, OPEN-9 27 (19,440 KB) OPEN-E 19 (13,680 KB) OPEN-L 7 (5,040 KB) OPEN-V 0 (0 KB) Conditions for the Number of XP Business Copy Pairs That Can Be Created (When No LUSE Volume Exists) The number of XP Business Copy pairs that can be created will change according to whether LUSE volumes are used or not.
If you apply these numbers to the above-mentioned equation: 3 x 10 + 577 x 20 = 11,570 26,167 and also 1 x 10 + 17 x 20 = 350 8,192 Therefore, 10 pairs of OPEN-3 volumes and 20 pairs of OPEN-V volumes can be created. Conditions for the Number of XP Business Copy Pairs That Can Be Created (When LUSE Volume Exists) The number of XP Business Copy pairs that can be created will change according to whether LUSE volumes are used or not.
Therefore, you can see that 10 XP Business Copy pairs, that are formed by three OPEN-3, volumes can be created. Performance Considerations • When you operate XP Business Copy: XP Business Copy operations affect the I/O performance of the storage system because of the copy operations to the S-VOLs. You should consider the relative importance of the storage system’s I/O performance and the XP Business Copy operations when you decide the number or structures of pairs and their copy pace.
• Structure for AIX host servers: When you use XP Business Copy on the AIX host servers, HP technical support strongly recommends that you use two AIX host servers to locate P-VOLs in one host server, and the paired S-VOLs in the other. If you use only one AIX host server, consider the following: • ◦ When the paircreate or pairresync operation is performed, XP Business Copy copying takes place between the P-VOL and S-VOL. Consequently the P-VOL and S-VOL have the same PVID.
Table 18 XP Business Copy Configuration Information CU# Port GID:LUN L1 P-VOL? Assoc. L1 L1 S-VOLs S-VOL? Assoc. L1 L2 P-VOL P-VOL? Assoc. L2 L2 S-VOLs S-VOL? Assoc.
attribute by XP Business Copy will be restricted too. To maintain these LDEVs, suspend or delete the XP Business Copy pair, or reset (unreserve) the Reserve attribute. Cautions on Maintaining the Cache If storage system cache maintenance is performed during a period of high I/O usage, one or more XP Business Copy pairs may suspend. Reduce the I/O load before cache maintenance.
Starting XP Business Copy After you have enabled the feature for Remote Web Console and prepared for XP Business Copy operations, you are ready to start up XP Business Copy. To start XP Business Copy and display the window you need: 1. Display the Remote Web Console main window. For information about how to display the Remote Web Console main window, see the HP XP24000/XP20000 Remote Web Console User Guide. 2. Click Go and then Business Copy on the menu bar of the Remote Web Console main window.
5 Using the XP Business Copy GUI This chapter describes the use of the XP Business Copy GUI. Read this chapter before you start the operation of XP Business Copy. • Page 51 • Page 57 • Page 59 Pair Operation Window The Pair Operation window (see Figure 24 (page 51)) displays the XP Business Copy volume and pair information for the selected port of the connected storage system and allows you to perform all XP Business Copy operations.
Table 19 Pair Operation Window Features Item Description Tree Allows you to select the desired port or host group. You can filter the volumes or volume pairs displayed in the Volume List on the upper right side of the Pair Operation window by selecting a port or a host group. No volume displays when you select Subsystem on the top of the Tree. volume list Displays all available volumes. For details, see (page 52).
Previous and Next buttons on the upper right of the Volume List to turn the pages of the Volume List and see the entire list. The Volume List lists all the installed volumes (LUs) on the selected port and displays information for each volume. Figure 25 Volume List Displaying Volumes (L1 pairs) Table 20 Volume List Item Description Message A message displays when there is no volume or pair to display.
Table 20 Volume List (continued) Item Description Copy Pace The information shown in Table 22 (page 54) appears. The information displayed depends on the status of the pair. For details about what appears in this item if you select XP Snapshot pairs, see the HP XP24000/XP20000 Snapshot User Guide. Sync. The information shown in Table 23 (page 55) to the pair status displays. For details about what displays in this item if you select XP Snapshot pairs, see the HP XP24000/XP20000 Snapshot User Guide.
1 When you create XP Business Copy pairs by using RAID Manager, the copy pace is set as follows: • When the track size is 1 or 2, Slower is set. • When the track size is 3, Medium is set. • When the track size is 4 to 15, Faster is set. Table 23 Displayed Information in Sync. Pair Status Displayed Information SMPL - - - is displayed. COPY(PD) The progress (%) of copying. PAIR Identical data (%) of P-VOL and S-VOL. COPY(SP) Copy completed data (%).
Figure 26 Preview List Displaying Settings (Operations) Table 25 Preview List Settings Item Description P-VOL Information about P-VOL displays in AAA-BB-CCC(XX:YY:ZZ) format. • AAA: Port ID (cluster and channel number) • BB: Group number of host group • CCC: LU number • XX:YY:ZZ: LDKC number:CU number:LDEV number MU The MU number of the XP Business Copy pair created with the P-VOL.
Table 26 XP Business Copy Menu Commands of the Preview List Command Feature Delete Cancels the selected settings. If you perform this command, the selected settings will be cleared. Modify Allows you to change the setting of the selected operation. This command becomes accessible only when the item you select from the Preview List is set to Paircreate, Pairsplit or Pairresync operation. Error Detail Displays the error message box, which displays the error code and message.
Table 27 History Window Item Description Previous button Allows you to return to the previous page of the list. This button is selectable only when the number of operation histories in the storage system exceeds 16,384, which is the maximum number of histories that can be displayed on one page. The button is grayed out if the total number of operation histories in the storage system is less than 16,384. Next button Allows you to turn to the next page of the list.
Option Window You can set the options for XP Business Copy on the Option window (see Figure 28 (page 59)). For detailed information about how to set the options, see (page 65). Figure 28 Option Window Table 29 Option Window Item Description Select Option(s) box When you check the check box of the option name, that option will be enabled. If you deselect the check box, that option will be disabled. The only options that are available in this box are Swap & Freeze and HOST I/O Performance.
6 Performing XP Business Copy Operations This chapter describes XP Business Copy operations using the XP Business Copy software on Remote Web Console.
The Display Filter dialog box (Business Copy tab selected) has the following features: • CLPR list: Allows you to display the specified cache logical partition (CLPR). • Volume Type box: ◦ The Internal VOL check box allows you to display the internal volumes. ◦ The External VOL check box allows you to display the external volumes. Both check boxes are selected by default.
1. Click Display Filter in the Pair Operation window. The Display Filter dialog box is displays. 2. 3. Select the CLPR where the volumes you want to display in the Volume List belong, and then select the check boxes of volume type, attribute, and pair status. Click OK. The Display Filter dialog box closes and only the volumes that meet the conditions you set in the dialog box will display in the Volume List. The filter settings are only effective within the current XP Business Copy operations.
Figure 30 Set Reserve Attribute Dialog Box The Set Reserve Attribute dialog box displays the unreserved SMPL volumes that you selected on the Pair Operation window. • Volume: Information for the volume is displayed in AAA-BB-CCC(XX:YY:ZZ) format.
4. Select the Change Reserve command in the menu. The Set Reserve Attribute dialog box opens. Select only unreserved and unpaired volumes to use the Change Reserve command. 5. On the Set Reserve Attribute dialog box, assure that the right volumes display, and then click OK. The setting will be reflected in the Preview List on the Pair Operation window. 6. Click Apply on the Pair Operation window. The settings are reflected in the storage system.
• The OK button resets the reserve attribute of the XP Business Copy S-VOLs and sets the status of the volumes back to SMPL. The settings display in the Preview List on the Pair Operation window. To apply the settings to the storage system, you must click Apply on the Pair Operation window. • The Cancel button closes the Set Reserve Attribute dialog box without resetting the reserve attribute. To unreserve one or more volumes (by resetting the reserve attribute): 1.
Creating Pairs CAUTION: The XP Business Copy paircreate operation overwrites all existing data on the S-VOLs. The user is responsible for backing up the data on the S-VOLs before creating XP Business Copy pairs. The Paircreate dialog box (see Figure 32 (page 66)) allows you to select the S-VOLs for each P-VOL, set the copy pace for all pairs being created, and start the paircreate operations. For information about how to create normal pairs or cascaded L1 pairs, see (page 69).
External Storage Software User Guide. For information about XP Thin Provisioning, see the HP XP24000/XP20000 Thin Provisioning Software User Guide. ◦ MU: The MU number of the P-VOL. ◦ Status: The status of the P-VOL. ◦ S-VOL: Information about S-VOL displays in AAA-BB-CCC(XX:YY:ZZ) format.
• The Select S-VOL box allows you to filter the S-VOLs displayed in the S-VOL List located on the right. ◦ The Port list allows you to select the available S-VOLs by port. ◦ The Volume Type box: The Internal VOL check box allows you to select the available S-VOLs that are internal volumes. The External VOL check box allows you to select the available S-VOLs that are external volumes. You need the XP External Storage features to select the external volumes.
• The Change button replaces the existing S-VOL of the selected L1 pair (meaning the S-VOL of the pair after completing the operation selected in the Paircreate Volume List) with the selected S-VOL. • The Cascade button adds the selected S-VOL and the P-VOL (node volume) to the Paircreate Volume List as an L2 pair. To use the Cascade button, you must select one of the listed L1 pairs.
8. 9. When the Paircreate dialog box displays the desired new pairs, click OK to reflect all pairs (settings) in the Paircreate Volume List to the Preview List on the Pair Operation window. On the Pair Operation window, click Apply to apply the operations set in the Paircreate dialog box to the storage system. When the initial copy operation to create the L1 pairs starts, the Pair Operation window shows the new pairs with COPY(PD) status and the progress (%) of the initial copy operations.
To split an L2 pair, you must first split the L1 pair (L1 status = PSUS). The reverse and quick restore pairresync operations cannot be used for L2 pairs. Table 31 (page 71) shows the relationship between the L1 pair status and the availability of XP Business Copy pair operations on the associated L2 pairs. (CMD RJT = command rejected.
Table 33 Read/Write to Node Volumes According to Status of L1/L2 Pairs L1 Pair Status COPY(PD) L2 Pair Status COPY(PD) PAIR COPY(SP) PSUS(SP) PSUS COPY(RS) PSUE Read Only Read Only Read Only Read Only Read Only Read Only Read Only Read/Write Read/Write Read/Write Read/Write Read/Write Read/Write Read/Write Read Only Read Only Read Only Read Only Read Only Read Only Read Only PAIR COPY(SP) PSUS(SP) PSUS COPY(RS) COPY(RS-R) PSUE Table 34 (page 72) indicates the relationship betwe
Figure 33 Pairsplit Dialog Box The Pairsplit dialog box consists of the following components. • Pairsplit Volume List The Volume List located on the upper side of the Pairsplit dialog box displays the following information pertaining to the P-VOL and S-VOL of the pair you want to split: ◦ P-VOL: Information about P-VOL displays in AAA-BB-CCC(XX:YY:ZZ) format.
indicates that the LDEV is a virtual volume used by XP Thin Provisioning (for example, 00:00:01X). For details regarding the external volumes, see the HP XP24000/XP20000 External Storage Software User Guide. For information about XP Thin Provisioning, see the HP XP24000/XP20000 Thin Provisioning Software User Guide. • • • ◦ Emulation: The emulation type of the P-VOL and S-VOL. ◦ Capacity(MB): The volume capacity displayed in megabytes (MB). ◦ CLPR(P): The cache logical partition of the P-VOL.
Table 35 Operations from the Host Servers during the Pairsplit Operation (continued) Operations Volumes Quick Split Steady Split If the host server tries to write data to the area that is not copied yet, new data will be written after the old data is copied to the S-VOL. P-VOL data during the pairsplit operation will therefore be copied to the S-VOL for sure. S-VOL • The areas that are already copied can be written as usual. Cannot be written.
– CCC: LU number – XX:YY:ZZ: LDKC number:CU number:LDEV number An LDEV number that ends with a pound or gate symbol (#) indicates that the LDEV is an external volume (for example, 00:00:01#). An LDEV number that ends with a letter X indicates that the LDEV is a virtual volume used by XP Thin Provisioning (for example, 00:00:01X). For details regarding the external volumes, see the HP XP24000/XP20000 External Storage Software User Guide.
5. When the Pairsplit dialog box displays the desired pairs, click OK to reflect all pairs to the Preview List on the Pair Operation window. Use the Delete command selected from the menu (that displays by right-clicking) to remove any pairs from the Pairsplit Volume List. 6. On the Pair Operation window, click Apply to apply the pairsplit operations set in the Pairsplit dialog box to the storage system.
7. If you also want to create and split L2 cascade pairs, add the L2 S-VOLs to the L1 pairs as follows: a. Select the desired L1 pair from the Pairsplit Volume List. b. If you are selecting an existing L1 pair, make sure that the status of the desired L1 pair is PSUS. c. From the Select MU list, select the MU number (1 or 2) for the L2 pair to be created. d. From the Pairsplit Volume List, select the volume that you want to assign as the S-VOL for the L2 pair. e.
you mix these two types of pairs, the pairsplit operation may terminate abnormally or the S-VOLs of the P-VOLs in the same consistency group may not be correctly created when the pairsplit request is executed. To enable the At-Time Split function using RAID Manager, follow these steps: 1. Edit the RAID Manager configuration definition file so that the XP Business Copy pairs belong to the same consistency group. 2.
Once these issues are resolved, perform the Pairresync operation and then Pairsplit can be executed. Suspending Pairs The Pairsplit-E dialog box (see Figure 34 (page 80)) allows you to suspend the pairs. Figure 34 Pairsplit-E Dialog Box The Pairsplit-E dialog box consists of the following components.
indicates that the LDEV is a virtual volume used by XP Thin Provisioning (for example, 00:00:01X). For details regarding the external volumes, see the HP XP24000/XP20000 External Storage Software User Guide. For information about XP Thin Provisioning, see the HP XP24000/XP20000 Thin Provisioning Software User Guide. • ◦ Emulation: The emulation type of the P-VOL and S-VOL. ◦ Capacity(MB): The volume capacity displayed in megabytes (MB). ◦ CLPR(P): The cache logical partition of the P-VOL.
Figure 35 Pairresync Dialog Box The Pairresync dialog box consists of the following components. • Pairresync Volume List The Volume List located on the upper side of the Pairresync dialog box displays the following information pertaining to the P-VOL and S-VOL of the pair you want to resynchronize: ◦ P-VOL: Information about P-VOL displays in AAA-BB-CCC(XX:YY:ZZ) format.
• ◦ Emulation: The emulation type of the P-VOL and S-VOL. ◦ Capacity(MB): The volume capacity displayed in megabytes (MB). ◦ CLPR(P): The cache logical partition of the P-VOL. ◦ CLPR(S): The cache logical partition of the S-VOL. The Resync Type list allows you to select the pairresync type for the pairs being resynchronized (from Normal Copy(P->S), Quick Resync(P->S), Reverse Copy(S->P), or Quick Restore(S->P)).
• The Copy Pace list allows you to select the copy pace (from Slower, Medium, or Faster) for all the pairs that you are resynchronizing. When resynchronizing pairs, you can select the pace for the pairresync operations: slower, medium, or faster. The slower pace minimizes the impact of XP Business Copy operations on storage system I/O performance. The faster pace resynchronizes the pairs as quickly as possible, but it may affect the storage system I/O performance.
7. Click OK to reflect the settings displayed in the Pairresync dialog box to the Preview List on the Pair Operation window. If you try to perform the quick restore operation to the pair you select from the Pairresync Volume List that is composed of volumes stored in multiple cache logical partitions (CLPRs), a message asking you whether you want to click OK and continue the operation will appear. Click OK if you do, or click Cancel to discontinue the quick restore operation. 8.
Figure 36 Pairsplit-S Dialog Box The Pairsplit-S dialog box consists of the following components. • Pairsplit-S Volume List The Volume List located on the upper side of the Pairsplit-S dialog box displays the following information pertaining to the P-VOL and S-VOL of the pair you want to delete: ◦ P-VOL: Information about P-VOL displays in AAA-BB-CCC(XX:YY:ZZ) format.
• ◦ Emulation: The emulation type of the P-VOL and S-VOL. ◦ Capacity(MB): The volume capacity displayed in megabytes (MB). ◦ CLPR(P): The cache logical partition of the P-VOL. ◦ CLPR(S): The cache logical partition of the S-VOL. The OK button adds the operation settings to suspend the selected pairs displayed in the Pairsplit-S Volume List to the Preview List on the Pair Operation window.
Figure 37 Detail Dialog Box Displaying Pair Information (L1 and L2 Pairs) The Detail box in the Detail dialog box has the following features: • P-VOL Information displays the following information: ◦ Volume ID: Information about the P-VOL displays in XX:YY:ZZ (LDKC number:CU number:LDEV number) format. An LDEV number that ends with a pound or gate symbol (#) indicates that the LDEV is an external volume (for example, 00:00:01#).
◦ CLPR(P): Information about the cache logical partition (CLPR) of the P-VOL displays in AA:BB (CLPR number:CLPR name) format. ◦ CLPR(S): Information about the cache logical partition (CLPR) of the S-VOL displays in AA:BB (CLPR number:CLPR name) format. An LDEV number that ends with a pound or gate symbol (#) indicates that the LDEV is an external volume (for example, 00:00:01#).
Figure 38 S-VOL Path Dialog Box The S-VOL Path dialog box has the following features: • The Pair Information box displays only information about the paths that are used by the XP Business Copy pairs selected in the Pair Operation window Volume List. P-VOL displays the path information for the P-VOL, and S-VOL displays the path information for the S-VOLs in AAA-BB-CCC(XX:YY:ZZ) format.
To display the Information dialog box: 1. Right-click anywhere on the volume list of the Pair Operation window. A menu displays. 2. Click the Information command in the menu. The Information dialog box displays. Figure 39 Information Dialog Box The following information displays in the Information dialog box: • Business Copy pairs The number of XP Business Copy pairs displays in the format of XXXX/YYYY.
• Remaining pair table(s) The number of remaining pair tables in the storage system displays on the left side of the slash (/). The total number of pair tables in the storage system displays on the right side of the slash (/). For information about the total number of pair tables in the storage system, see (page 41).
before the copying process starts, the History window will not display information about the operation. 5. If there are many records of operations, click the scroll button. The list will scroll and you will see the operation history that was not previously displayed. If you click and drag down the frame border that divides the History window into upper and lower panes, you can expand the display area of the list. 6. If there are more than 16,384 records of operations, click Next.
7 Troubleshooting This chapter provides troubleshooting information for XP Business Copy and instructions for calling technical support. • Page 94 • Page 95 • Page 103 Troubleshooting If you have a problem with Remote Web Console, see the HP XP24000/XP20000 Remote Web Console User Guide for troubleshooting information. Table 39 (page 94) provides general troubleshooting instructions for XP Business Copy operations.
To display the Error dialog box, select the failed volume in the Preview List on the Pair Operation window, right-click to display the menu, and then click Error Detail. See the HP XP24000/XP20000 Remote Web Console Error Codes for the list of error codes and corrective actions.
Table 40 Error Code and Error Contents When Operating RAID Manager (continued) Error Code (SSB1) b9a0/b9a1/b9a2/ Error Code (SSB2) Error Contents 201b Because the status of the XP Continuous Access Journal pair was not PAIR, PSUS, or PSUE, the At-Time Split operation was rejected. The S-VOL of the XP Continuous Access Journal pair had been the P-VOL of the XP Business Copy pair included in the consistency group on which the At-Time Split operation was performed.
Table 40 Error Code and Error Contents When Operating RAID Manager (continued) Error Code (SSB1) Error Code (SSB2) Error Contents 1. The S-VOL was a pool volume for XP Snapshot. 2. The S-VOL was the S-VOL of an XP Snapshot pair or a V-VOL for XP Snapshot. 3. The S-VOL was the P-VOL of an XP Snapshot pair and one of the following conditions held true: • The XP Snapshot pair was being restored. • The XP Business Copy quick restore operation was performed.
Table 40 Error Code and Error Contents When Operating RAID Manager (continued) Error Code (SSB1) b9a0/b9a1/b9a2/ Error Code (SSB2) Error Contents 20a0 The specified pairs contain the volumes of the XP Continuous Access asynchronous pairs. Because the CLPRs of the P-VOL and S-VOL of the specified pair were different, the quick restore operation was rejected. 20a2 Because the P-VOL was the XP Thin Provisioning V-VOL whose capacity was increasing, the create pair operation was rejected.
Table 40 Error Code and Error Contents When Operating RAID Manager (continued) Error Code (SSB1) Error Code (SSB2) Error Contents 3. Because the volume specified as the P-VOL was the S-VOL of the pair that was being split by quick split, the pair creation was rejected. 4. Because the VLL setting of the P-VOL was different from that of the S-VOL, the quick restore operation was rejected. 5. Because the specified P-VOL and S-VOL were the FlashCopy Mirroring pair, the pair operation was rejected. 6.
Table 40 Error Code and Error Contents When Operating RAID Manager (continued) Error Code (SSB1) b9a0/b9a1/b9a2/ Error Code (SSB2) 2333 Because the volume specified as the P-VOL was not the P-VOL of the existing pair, the pair operation was rejected. 2334 1. Because the volume specified as the P-VOL had an emulation type that could not be handled by RAID Manager, the pair operation was rejected. 2.
Table 40 Error Code and Error Contents When Operating RAID Manager (continued) Error Code (SSB1) b9a0/b9a1/b9a2/ Error Code (SSB2) 234b Because the volume specified as the S-VOL was the source volume of XP Auto LUN, the pair operation was rejected. 2350 Because the specified P-VOL and the S-VOL for XP Business Copy pair operations was not a pair, the pair operation was rejected.
Table 40 Error Code and Error Contents When Operating RAID Manager (continued) Error Code (SSB1) b9a0/b9a1/b9a2/ Error Code (SSB2) 2381 Because the volume specified as the S-VOL was blocked or a system disk, the pair operation was rejected. 2382 Because the volume specified as the S-VOL was being formatted, the pair operation was rejected. 2383 Because the volume specified as the S-VOL was a command device, the pair operation was rejected.
Table 40 Error Code and Error Contents When Operating RAID Manager (continued) Error Code (SSB1) Error Code (SSB2) Error Contents B912 The pair operation was rejected because the S-VOL specified at the pair operation did not exist. B913 The pair operation was rejected because the mirror ID was invalid.
8 Support and Other Resources Related Documentation • HP RAID Manager User Guide • HP XP24000/XP20000 LUN Manager User Guide • HP XP24000/XP20000 Disk Array Owner Guide • HP XP24000/XP20000 Remote Web Console User Guide • HP XP24000/XP20000 External Storage Software User Guide • HP XP24000/XP20000 Snapshot User Guide • XP Business Copy for Mainframe User Guide: HP XP24000 Disk Array, HP XP20000 Disk Array • HP XP24000/XP20000 for FlashCopy Mirroring Software User Guide • HP XP24000/XP20000
Before contacting HP, collect the following information: • Product model names and numbers • Technical support registration number (if applicable) • Product serial numbers • Error messages • Operating system type and revision level • Detailed questions Subscription Service HP recommends that you register your product at the Subscriber’s Choice for Business website: http://www.hp.
Glossary A ACP Array control processor. C CTG Consistency group. CU Control unit. CVS Customized volume size. D DKC Disk controller. E ECC Error check and correct. ESCON Enterprise systems connection An optical interface used to connect the mainframe to the control unit; a predecessor to FICON. G G-ID Host group ID. GT HP Graph-Track. L LD, LDEV Logical device.
T TCz Hitachi TrueCopy™ for Mainframe. W WWN World Wide Wame.
Index A N At-Time Split, 13 node volume, 10 C O Cache Residency Manager, 25 cascade function, 9 consistency group, 78 conventions storage capacity values, 104 Copy Threshold option, 23 COPY(PD), 21 COPY(RS), 22 COPY(RS-R), 22 COPY(SP), 21 custom-sized volumes, 38 operations paircreate, 9 pairresync, 14 pairsplit-E, 14 pairsplit-S, 19 quick split, 12 reserve, 8 reset reserve, 65 reverse pairresync, 16 split, 12 starting, 50 steady split, 12 Option, 22 Option setting, 65 Option window, 59 D deleting p
quick split operation, 13 R RAID level swap (quick restore), 47 related documentation, 104 Remote Web Console main window, 50, 62 requirements, 38 reserve attribute, 8 resetting, 64 setting, 62 reset reserve attribute, 65 resynchronizing pairs, 81 reverse pairresync, 16 root volume, 10 suspending pairs (pairsplit-E), 80 system requirements, 38 troubleshooting, 94 update copy operation, 11 XP Continuous Access sharing volumes with XP Business Copy, 27 XP Continuous Access Journal sharing volumes with XP Bu
