HP Hitachi ShadowImage™ for Mainframe User's Guide HP XP24000 Disk Array HP XP20000 Disk Array Abstract This guide explains how to use Hitachi ShadowImage™ for Mainframe to create nondisruptive, high-speed copies of information stored by mainframe hosts on HP XP24000/XP20000 Disk Arrays. Topics include preparing for, performing, and troubleshooting ShadowImage for Mainframe operations using the Remote Web Console web client, PPRC host functions, and XP for Business Continuity Manager Software.
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Contents 1 Overview of Hitachi ShadowImage™ for Mainframe.......................................6 ShadowImage for Mainframe.....................................................................................................6 Business Benefits.......................................................................................................................7 Feature Highlights.....................................................................................................................
Installing ShadowImage for Mainframe.....................................................................................49 Starting ShadowImage for Mainframe.......................................................................................49 5 Using the ShadowImage for Mainframe GUI................................................51 Pair Operation Window..........................................................................................................51 Volume List..............................
Deleting Pairs Using PPRC Commands.....................................................................................100 CDELPAIR.......................................................................................................................100 DELPAIR..........................................................................................................................100 Displaying Pair Status Using PPRC Commands..........................................................................
1 Overview of Hitachi ShadowImage™ for Mainframe This chapter provides an overview of the ShadowImage for Mainframe software for the HP XP disk array: • Page 6 • Page 7 • Page 7 Unless otherwise specified, the terms XP disk array and storage system in this guide refer 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.
If you use the HP DKA Encryption License Key, you can create a ShadowImage for Mainframe pair by using an encrypted volume and a non-encrypted volume. For example, you can create the pair specifying an encrypted volume as the S-VOL and a non-encrypted volume as the T-VOL. In this case, data in the encrypted S-VOL will be copied as non-encrypted data in the non-encrypted T-VOL.
2 About ShadowImage for Mainframe Operations This chapter describes ShadowImage for Mainframe operations. • Page 8 • Page 10 • Page 19 • Page 24 ShadowImage for Mainframe Components The system for using ShadowImage for Mainframe usually contains the following components. • Pair of volumes (S-VOL and T-VOL) • Licensed ShadowImage for Mainframe program product Figure 1 (page 8) shows a typical ShadowImage for Mainframe configuration using Remote Web Console.
You may operate SIz directly from the host and do not need to use the Remote Web Console computer, if you use VOS3 DMFVSS, XP for Business Continuity Manager Software™, IBM PPRC host software functions, or IBM DFSMSdss host software functions. Volume Pairs and CTGs ShadowImage for Mainframe performs internal copy operations for logical volume pairs established by the user. Therefore, you need at least two volumes to use SIz, one for copy source (S-VOL), and another for copy target (T-VOL).
ShadowImage for Mainframe Operations This section describes the main operations for ShadowImage for Mainframe. Set Reserve Attribute Operation The ShadowImage for Mainframe set reserve attribute operation reserves a volume so that it can be used as an SIz T-VOL. Reserved volumes can only be used as SIz T-VOLs. The XP storage system rejects all write operations to reserved volumes (unless in Split or V-Split status). You can reserve up to 16,384 volumes in one XP storage system.
Before the initial copy operation, the status of a pair is Simplex. The status of the pair is Pending while the initial copy operation is in progress. The status changes to Duplex when the initial copy is complete. Write operations performed on the S-VOL during the initial copy operation will be duplicated at the T-VOL by update copy operations after the initial copy is complete.
Split Pair Operation The ShadowImage for Mainframe split capability provides point-in-time backup of your data, and also facilitates real data testing by making the SIz copies (T-VOLs) available for host access. The SIz split operation copies whole S-VOL data or differential data at that time to the T-VOL to make the T-VOL identical to the state of the S-VOL when the split command was issued. If there are many host I/Os for the S-VOL, it may take time to synchronize the S-VOL and the T-VOL.
Figure 4 Split Pair Operation by At-Time Split (Specifying Copy Group) Figure 5 Split Pair Operation by At-Time Split (Specifying the Split Time) • Splitting all the pairs in the same CTG. A PPRC command enables you to copy data from the SIz S-VOLs in the same CTG to T-VOLs simultaneously. The T-VOLs will contain the same data as the S-VOLs when the pairs are split.
The operation for splitting all the pairs in the same CTG is similar to the operation for splitting pairs when a copy group is specified by using XP for Business Continuity Manager Software™. However, the operation for splitting pairs in a CTG works in Quick Split, so you cannot specify Steady Split. You cannot specify the split time when using the PPRC command to split pairs. The split time indicates when you want to store the S-VOL data to the T-VOL.
for the edited differential bitmap. The copy direction for a normal resync operation is S-VOL to T-VOL. Pair status changes to Duplex when the copying process of differential data is completed. The pair status during a normal resync operation is resync, and the S-VOL remains accessible to all hosts for both read and write operations during a normal resync operation. The T-VOL becomes inaccessible to all hosts during a normal resync operation.
Figure 6 Forward Pairresync Operations CAUTION: Even if the copy operation is completed without any host I/O, the data in the S-VOL and the data in the T-VOL may not be the same. Whether the S-VOL and the T-VOL have the same data depends on the condition of the storage system. To make the S-VOL data and the T-VOL data equal, split the pair and make the pair status split.
reverse copy operation is resync-r, and the S-VOL and T-VOL become inaccessible to all hosts for write operations during a reverse copy operation. As soon as the reverse copy operation is complete, the S-VOL becomes accessible. • Quick Restore (backward pairresync in fast speed) The quick restore operation (see Figure 7 (page 18)) speeds up the reverse copy operation by changing the volume map in the XP storage system to swap the contents of the S-VOL and T-VOL without copying the T-VOL data to the S-VOL.
Figure 7 (page 18) illustrates how the data changes during the backward pairresync operations. Figure 7 Backward Pairresync Operations The S-VOL remains fully accessible during a normal/quick resync operation, but becomes inaccessible to all hosts during a reverse copy or quick restore operation. When reverse copy or quick restore is in progress, you cannot perform, add, split, or resync pair for any other pair that shares the same S-VOL (delete pair and suspend pair are allowed).
T-VOL to the S-VOL. This ensures that the S-VOL and T-VOL are properly resynchronized in the desired direction, and also greatly reduces the time needed to resynchronize the pair. • Pairresync for suspend pair When a normal/quick resync operation is performed on a suspended pair, the XP storage system copies all data on the S-VOL to the T-VOL, since all S-VOL tracks were flagged as difference data when the pair was suspended.
Figure 8 ShadowImage for Mainframe Pair Status Transitions If a volume is not assigned to an SIz pair, its status is simplex. 1. Select the simplex volumes for S-VOL and T-VOL to create an SIz pair. When you create an SIz pair, the initial copy operation starts. During the initial copy operation, the status of the S-VOL and T-VOL changes to pending. 2. When the initial copy operation is complete, the pair status becomes duplex.
is complete, the pair status changes to split, and you can access the split T-VOL. The update copy operation is not performed on the pairs which status is split. • 4. If the HP disk array cannot maintain duplex status for any reason, or if you suspend the pair, the pair status changes to suspend. When you start a pairresync operation, the pair status changes to resync or resync-r. When the pairresync operation is complete, the pair status changes to Duplex.
Table 2 ShadowImage for Mainframe Pair Status (continued) Status 22 Description Host Status S-VOL Access T-VOL Access V-Split The pair split S-VOL = PPRI-SUSP operation in Quick T-VOL = SIMPLEX Split mode has been accepted normally. The split operation starts a copy operation.1 Only the S-VOL differential data is being copied to the T-VOL in background. The V-Split pairs cannot be deleted. Read/write-enabled Read/write-enabled, can be varied online.
Table 2 ShadowImage for Mainframe Pair Status (continued) Status Description Host Status S-VOL Access T-VOL Access Resync-R The reverse resync S-VOL = PPRI-PNDG operation on the pair T-VOL = PSEC-PNDG has been accepted normally. The reverse resyn operation is executed.1 When a split pair is reverse resynchronized, the XP storage system copies only the T-VOL differential data to the S-VOL. The reverse copy cannot be performed on suspended pairs.
Table 3 Pair Status and Allowable Operations (continued) Operation Pair Status Simplex Resync Pair (forward) Pending Duplex 1 SP-Pend V-Split Split Resync 1 Resync-R Suspend NG NG NG NG Yes Yes NG NG Yes Resync NG Pair (backward) NG NG NG NG Yes NG NG NG Delete Pair Yes Yes Yes NG Yes Yes Yes Yes 1 NG There are the following cases: • If you try to resynchronize a pair in duplex or resync status by copying data from the S-VOL to the T-VOL using PPRC TSO command, the pr
Figure 9 Quick Restore Operation With or Without Swap&Freeze Option The Quick Restore pairresync operation on a pair which status is split exchanges the data in the S-VOL and the T-VOL of the pair. If you use Swap&Freeze option when performing the Quick Restore pairresync operation, the update copy operation will not take place after the Quick Restore pairresync operation is complete. Therefore, the data of the S-VOL and the T-VOL is kept exchanged.
heavy, it is more likely that host server I/O performance (response) may be degraded. The Copy Threshold option temporarily stops SIz copy operations when the load of the storage system is heavy. If you set this option in effect, you can minimize the degradation of host I/O performance by temporarily stopping SIz copy operations when the load of the storage system is heavy. ShadowImage for Mainframe has another option called the Host I/O Performance option, which maintains host I/O performance (response).
3 Interoperability with other Products and Functions ShadowImage for Mainframe supports concurrent operations with the following data management functions. • Page 27 • Page 27 • Page 27 • Page 28 • Page 28 • Page 28 • Page 28 • Page 32 Virtual LVI Virtual LVI volumes can be assigned to SIz pairs, provided that the T-VOL has the same capacity as the S-VOL.
Volume Retention Manager Normal volumes have the read/write attribute so that you can access and update the data without any restrictions. By using Volume Retention Manager, you may set the read only attribute, which prohibit writing operation, or the protect attribute which prohibit both reading and writing operations. Remember that you cannot create SIz pairs with the volumes with protect attribute. XP Auto LUN SIz volumes can be assigned to migration volumes of XP Auto LUN.
command. The SIz remote console software displays the LDEV ID and SIz pair status of all T-VOLs associated with an S-VOL. • Reverse copy and quick restore operations can be performed on shared SIz/TCz pairs only when the TCz pair is suspended. Table 6 (page 29) describes the host pair status reporting for SIz volumes, TCz volumes, and SIz/TCz shared volumes.
Figure 10 SIz and TCz: Shared S-VOL / M-VOL Figure 11 (page 30) shows a volume that is functioning as both an SIz S-VOL and a TCz R-VOL. This configuration allows you to use SIz to provide additional remote copies of TCz R-VOLs. Figure 11 SIz and TCz: Shared S-VOL / R-VOL CAUTION: When you share a SIz S-VOL with a TCz R-VOL as shown in Figure 11 (page 30), the write operation to the TCz M-VOL takes time.
In addition, note that in the case of TCzA, the TCz pair may be suspended by failure because of the shortage of the capacity of its side file. Figure 12 (page 31) is an example of a volume, which is functioning as both a TCz M-VOL and an SIz S-VOL, while the R-VOL of the same TCz pair is also functioning as the S-VOL of another SIz pair.
to confirm the pair statuses. You can perform the Steady Split operation by specifying the CSUSPEND parameters (Byte 7 = ‘M’, Byte 8 = ‘P’, Byte 9 = ‘S’). For details about the PPRC commands, see (page 90). If a volume is shared with a SIz pair and a TCz pair, you can perform QuickRestore on the SIz pair when the TCz pair is suspended. You cannot perform QuickRestore on the SIz pair when the TCz pair is not suspended.
Table 9 Currency of a Shared SIz and URz Volume SIz Pair Status URz Pair Status Pending duplex Duplex Suspended Pending Not current Not current Not current Duplex Not current Not current CURRENT SP-Pending Not current Not current CURRENT V-Split Not current Not current CURRENT Split CURRENT CURRENT CURRENT Resync Not current Not current CURRENT Resync-r N/A N/A CURRENT Suspended Not current Not current Not current Figure 14 (page 33) shows a volume which is functioning as
Figure 15 SIz and URz: Shared S-VOL/S-VOL CAUTION: When you share an SIz S-VOL with a URz S-VOL as shown in Figure 15 (page 34), the write operation to the URz P-VOL takes time. When the SIz pair is in the V-Split status, the write operation to the URz P-VOL may take longer depending on the time needed for the copying process of the SIz pair. In addition, note that if the journal volume size is small, the URz pair may be suspended by failure because of the shortage of the capacity of its journal volume.
Figure 16 SIz and URz: Shared S-VOL/P-VOL and S-VOL/S-VOL Figure 17 (page 35) shows a volume that is functioning as both an SIz T-VOL and a URz P-VOL. This configuration allows you to use URz to provide remote copies of SIz T-VOLs. Figure 17 SIz and URz: Shared T-VOL/P-VOL In the configuration shown in Figure 17 (page 35), you cannot perform the SIz and URz copy operations at the same time. In Figure 17 (page 35), first you need to create and split the SIz pair, then create the URz pair.
Table 10 Quick Restore Operation When Volume Is Shared with SIz Pair and URz Pair Shared Volume ShadowImage for Mainframe P-VOL S-VOL Quick Restore Operation on SIz Pair Universal Replicator for Mainframe P-VOL Yes S-VOL Yes P-VOL Yes TrueCopy for Mainframe and Universal Replicator for Mainframe Figure 18 (page 36) and Figure 19 (page 37) show examples of using SIz, TCz, and URz at the same time.
Figure 19 SIz, TCz, and URz: Shared S-VOL / R-VOL / P-VOL Table 11 (page 37) describes the availability of ShadowImage for Mainframe operation in the TrueCopy for Mainframe secondary site Table 11 Availability of ShadowImage for Mainframe Operation in the TrueCopy for Mainframe Secondary Site TCz Pair Status Status of URz Pair for Delta Add Pair Resync Operation ShadowImage for Mainframe Operation Split Pair Hold YES Pending Duplex Suspend Pair Delete Pair YES YES YES YES Suspended YES Swappi
Table 12 Availability of ShadowImage for Mainframe Operation in the Universal Replicator for Mainframe Secondary Site URz Pair Status Status of URz Pair for Delta Add Pair Resync Operation ShadowImage for Mainframe Operation Split Pair Hold YES Pending Duplex Suspend Pair Delete Pair YES YES YES YES Suspended YES Swapping YES Duplex Resync Pair Normal Copy Quick Resync Reverse Copy Quick Restore YES YES YES NO NO YES YES YES YES NO NO YES YES YES YES YES YES NO YES YE
4 Preparing for ShadowImage for Mainframe Operations This chapter describes requirements for using and maintaining ShadowImage for Mainframe, including how to calculate the number of pairs that ShadowImage for Mainframe can create and how to install and start ShadowImage for Mainframe. Read this chapter before you start using ShadowImage for Mainframe.
• Emulation type Only volumes with mainframe emulation type such as 3390-3, 3390-3A, 6588-1 can be used. You need to select the volumes of the same emulation type for S-VOL and T-VOL. However, as for the DKC emulation types, there is no restriction. The DKC emulation type for the S-VOL and T-VOL can be the same or different (for example, 3990 S-VOL and 2105 T-VOL).
Figure 20 Total Capacity of SIz Volumes (Example 1) In Figure 20 (page 41), the total capacity of the SIz volume is 1. Figure 21 (page 41) shows two SIz pairs. Figure 21 Total Capacity of SIz Volumes (Example 2) In Figure 21 (page 41), the total capacity of the SIz volumes is 3. Requirements for Other Software You may use the following program products for SIz operations.
Table 14 Additional Shared Memory for Differential Tables Additional Shared Memory for SIz Num. of Differential Tables Num. of Pair Tables Num. of Volumes in Storage System 0 0 1,024 Additional shared memory for SIz is installed 26,176 8,192 16,384 Extension 1 57,600 8,192 16,384 Extension 2 No additional shared memory for SIz 104,768 16,384 65,536 1 Extension 3 146,688 16,384 131,072 Extension 41 209,600 16,384 131,072 1 This can be used only in the XP24000 disk array.
to calculate the number of differential tables and pair tables that are required for XP Auto LUN, see the HP XP24000/XP20000 Auto LUN Software User's Guide and see the HP XP24000/XP20000 Snapshot User's Guide to calculate the number of differential tables that are required for XP Snapshot.
pair, and the conditions you need to consider when calculating the number of SIz pairs that can be created.
• The capacity of each volume used to create a pair (this is the capacity specified as the CVS or customized volume size) Use the following expression to calculate the total number of the differential tables and pair tables per pair.
Table 15 Number of the Control Cylinders According to the Emulation Types (continued) Emulation Type Number of the Control Cylinders 3390-L 23 3390-LA 23 3390-LB 23 3390-LC 23 3390-M 53 3390-MA 53 3390-MB 53 3390-MC 53 NF80-F 22 NF80-K 7 NF80-KA 7 NF80-KB 7 NF80-KC 7 If you intend to create pairs with volumes of different emulation types, the maximum number of pairs you can create will depend on the following conditions.
system’s I/O performance and the SIz operations when you decide the number or structures of pairs and their copy pace. For example, assigning three T-VOLs to each S-VOL takes more resources than assigning only one or two. More T-VOLs you assign on an S-VOL, the risk of affection on the I/O performance of the storage system increases. Even if you assign only one T-VOL on an S-VOL, pace of the initial copy operations may affect the I/O performance of the storage system.
Identifying the Source and Target Volumes For each volume, write down the CU image and LDEV ID, whether the volume will be an S-VOL or T-VOL, and the other volumes in its pair (see Table 16 (page 48) for a sample table). The S-VOLs will remain fully accessible to all hosts throughout normal SIz operations (except during reverse copy and quick restore). The T-VOLs will need to be varied offline before being reserved for SIz operations.
Cautions on Switching Off the Power Supply If you have to switch off the power supply of the XP storage system during SIz operations, make sure to: • Complete copying for the SIz pair in the SP-pend or V-split status first to change the pair status from SP-pend or V-split to split, and then switch off the power supply. If the shared memory is volatilized when you switch on the power supply again, the pair in the SP-pend or V-split status changes to suspend.
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's Guide. 2. Click Go and then ShadowImage for Mainframe on the menu bar of the Remote Web Console main window. Names of the windows that you need for SIz operations will be displayed in the submenu. 3. Click the name of the window you want to display.
5 Using the ShadowImage for Mainframe GUI This chapter describes the ShadowImage for Mainframe windows in Remote Web Console. • Page 51 • Page 56 • Page 57 • Page 58 Pair Operation Window The Pair Operation window (see Figure 22 (page 51)) displays the SIz volume and pair information for the selected CU image of the connected XP storage system and allows you to perform all SIz operations.
Table 17 Pair Operation Window Features (continued) Item Description upper right of the Pair Operation window. No volume displays when you select Subsystem on the top of the Tree. The tree is located on the left of the Pair Operation window. Volume List Displays all available volumes and is located on the upper right of the Pair Operation window. 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 shows all the installed volumes (LDEVs) on the selected CU image and displays the information for each volume. Figure 23 Volume List Table 18 Volume List Item Description Message Displays a message when there is no volume or pair to display. If you see the message in the Volume List, click a different icon in the Tree on the left area of the Pair Operation window.
Table 19 Displayed Information in Copy Pace (continued) Pair Status Displayed Information Duplex - - - is displayed. SP-Pend The copy pace (Slower, Medium, or Faster) for the pair being created. V-Split Split - - - is displayed. Resync The copy pace (Slower, Medium, or Faster) for the pair being created. Resync-R Suspend - - - is displayed. F-Copy Deleting Table 20 Displayed Information in Sync. Pair Status Displayed Information Simplex - - - is displayed.
Table 21 ShadowImage for Mainframe Menu Commands for the Pair Operation Window (continued) Command Feature Delete Pair Opens the Delete Volume Pair dialog box, which allows you to delete SIz pairs (see (page 82)). Change Reserve Opens the Set Reserve Attribute dialog box or Reset Reserve Attribute dialog box allows you to set/reset the SIz reserve attribute (see (page 64) and (page 65)).
Table 23 ShadowImage for Mainframe Menu Commands for 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 Add Pair, Split Pair or Resync Pair operation. Error Detail Displays the error message box, which displays the error code and message.
Table 24 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.
Figure 26 Option Window Table 26 Option Window Item Description Select Option(s) box Enables an option name when you check the check box of an option name. If you clear the check box, that option will be disabled. Note that only options that are available for SIz in this box are Swap & Freeze and HOST I/O Performance. FCv2 Slower Copy1 and FCv2 Slower Copy2 are the options for FlashCopy Mirroring V2.
Figure 27 CTG Window Table 27 CTG Window Item Description CTG Tree Displays all the CTGs in layers, regardless of their registrations and is located on the left of the CTG window. • To display all the CTGs, select Subsystem on the top of the Tree. Note that the CTGs that you can display in the CTG window are only those reserved in a mainframe storage system. • To display only the reserved CTGs, select Reserved. • To display only the unreserved CTGs, select Free.
Table 27 CTG Window (continued) Item Description Apply button Applies the SIz operations displayed in the CTG List to the XP24000/XP20000 storage system. Cancel button Cancels all the ongoing operations specified in the CTG List without applying them to the XP24000/XP20000 storage system. To perform a CTG operation, use the desired command selected from the menu that can be displayed by right-clicking one of the CTGs displayed in the CTG List that you want to work on.
6 Performing ShadowImage for Mainframe Operations Using Remote Web Console This chapter provides instructions for performing ShadowImage for Mainframe operations using the ShadowImage for Mainframe software on Remote Web Console.
Figure 28 Display Filter Dialog Box The Display Filter dialog box has the following features: • The CLPR list allows you to display the specified cache logical partition (CLPR). • The 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 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 settings in the Display filter dialog box are only effective within the current SIz operations.
Setting the Reserve Attribute The Set Reserve Attribute dialog box (see Figure 29 (page 64)) enables you to set the reserve attribute for the Simplex volumes selected in the Pair Operation window, and reserve the volumes as SIz T-VOLs. Figure 29 Set Reserve Attribute Dialog Box The Set Reserve Attribute dialog box displays the unreserved simplex volumes that you selected in the Pair Operation window. • Volume: information for the volume displays in XX:YY:ZZ (LDKC number: CU number: LDEV number) format.
6. Click Apply in the Pair Operation window. The settings are reflected in the storage system. 7. Verify that the settings are reflected in the XP storage system. You can check whether the attribute setting is updated or not on the Display Filter dialog box. Resetting the Reserve Attribute The Reset Reserve Attribute dialog box (see Figure 30 (page 65)) enables you to reset the reserve attribute for (for example, unreserve) the volumes selected in the Pair Operation window.
4. Select the Change Reserve command in the menu. The Reset Reserve Attribute dialog box opens. Select only reserved and unpaired volumes to use the Change Reserve command. 5. On the Reset Reserve Attribute dialog box, assure that the right volumes display, and then click OK. The setting will be reflected in the Preview List in the Pair Operation window. 6. Click Apply in the Pair Operation window. The settings are reflected in the storage system.
Figure 31 CT Group Status Dialog Box The items displayed in the CT Group Status dialog box are as follows: • CTG list allows you to select the CTG that you want to display in the Pair Information List. • Pair Information List, located below the CTG list, displays the following information pertaining to the pair or pairs registered in the selected CTG. ◦ S-VOL: Displays the ID (LDKC:CU:LDEV) of the S-VOL of the pair registered in the selected CTG.
3. 4. Repeat steps 1 and 2 until the CTG List in the CTG window displays all the desired CTG settings. Set the reserve attribute of the selected CTG by clicking the Apply button displayed in the lower part of the CTG window. The result of the Add CT Group command will then be displayed in the CTG window. Resetting the Reserve Attribute of a CTG To reset the reserve attribute of one or more CTGs: 1. In the CTG window, select the desired CTG displayed under the Reserved in the Tree.
The Add Pair dialog box consists of the following components. • Add Pair Volume List The Volume List located on the upper side of the Add Pair dialog box displays the following information pertaining to the P-VOL and S-VOL used for adding a pair: ◦ S-VOL: The LDKC:CU:LDEV of the S-VOL. An LDEV number that ends with a pound or gate symbol (#) indicates that the LDEV is an external volume (for example, 00:00:01#).
• The Next button allows you to turn to the next page of the T-VOL List. This button is selectable only when the number of volumes defined in the storage system exceeds 1,024 volumes, which is the maximum number of volumes that can be displayed on one page. It remains dimmed when the total number of volumes defined in the storage system is less than 1,024 volumes. • The T-VOL List displays the following information related to T-VOLs: ◦ Volume: The ID (LDKC:CU:LDEV) of the T-VOL.
d. e. 7. Click Set to create (add) the T-VOL to the selected S-VOL. The T-VOL will then be displayed next to the selected S-VOL. To add a second and/or third T-VOL to the same S-VOL, repeat steps b through d to add each T-VOL to the selected S-VOL. Each pair to be created displays separately in the Add Pair Volume List. Repeat step 6 until all desired pairs are displayed. Use the Change button to replace a T-VOL. Use the Set button to add a T-VOL.
Figure 33 Split Volume Pair Dialog Box The Split Volume Pair dialog box consists of the following components. • Split Volume Pair Volume List The Volume List located on the upper side of the Split Volume Pair panel displays the following information pertaining to the S-VOL and T-VOL of the pair that you want to split: ◦ S-VOL: The LDKC:CU:LDEV of the S-VOL. An LDEV number that ends with a pound or gate symbol (#) indicates that the LDEV is an external volume (for example, 00:00:01#).
• The Select Split Type list allows you to select the split type (from Quick Split or Steady Split) for all the pairs that you are splitting. Table 30 (page 73) lists read/write operations from the host servers to the volumes during the split pair operation. Table 30 Operations from the Host Servers during the Split Pair Operation Operations Volumes Quick Split Steady Split Read S-VOL Both areas which are not copied and areas which are already copied can be read as usual.
exceeds this limit, use the Previous and Next buttons on the upper right of the T-VOL List to turn the pages of the T-VOL List and see the entire list. • The Previous button allows you to return to the previous page of the T-VOL List. This button is selectable only when the number of volumes defined in the storage system exceeds 1,024 volumes, which is the maximum number of volumes that can be displayed on one page.
4. Select from the Select Split Type list, the split type for all pairs being split. The split type is set for all pairs being split. If you change the setting, the latest setting is applied to all pairs. 5. When the Split Volume Pair dialog box displays the desired pairs, click OK to reflect all pairs to the Preview List in the Pair Operation window. Use the Delete command selected from the menu (that will be displayed by right-clicking) to remove any pairs from the Split Volume Pair Volume List. 6.
7. 8. Click OK to reflect the settings in the Split Volume Pair dialog box to the Preview List in the Pair Operation window. In the Pair Operation window, click Apply to apply the operation settings in the Preview List to the storage system. The pairs will then be created and split according to the operations set in the Split Volume Pair dialog box.
On registering the split time: • For the pairs in the CTG to which you registered the Split time, you can only perform Suspend Pair operations or Delete Pair operations. If you perform Add Pair, Split or Pair Resync operation, registration of the Split time will be rejected. To perform Add Pair, Split or Pair Resync operation, you must first reset the registration of the Split time. • The specified Split time will be reset by switching off the power supply.
Suspending Pairs The Suspend Volume Pair dialog box (see Figure 34 (page 78)) allows you to suspend the pairs. Figure 34 Suspend Volume Pair Dialog Box The Suspend Volume Pair dialog box consists of the following components. • Suspend Volume Pair Volume List The Volume List located on the upper side of the Suspend Volume Pair panel displays the following information pertaining to the S-VOL and T-VOL of the pair you want to suspend: ◦ S-VOL: The LDKC:CU:LDEV of the S-VOL.
3. On the Suspend Volume Pair dialog box, select the pairs you want to suspend, and click OK to reflect the settings to the Preview List in the Pair Operation window. To remove pairs from the list, select the unnecessary SIz pairs, right-click while selecting the pairs, and then select the Delete command from the menu that will be displayed by right-clicking. 4. 5. Repeat steps 2 and 3 to suspend additional pairs in the Suspend Volume Pair Volume List.
• ◦ CLPR(S): The cache logical partition of the S-VOL. ◦ CLPR(T): The cache logical partition of the T-VOL. The Resync Type list allows you to select the resync type for the pairs being resynchronized (from Normal Copy(S->T), Quick Resync(S->T), Reverse Copy(T->S), or Quick Restore(T->S)). Before selecting Reverse Copy(T->S) or Quick Restore(T->S), make sure that the selected pair meets the requirements listed in Table 32 (page 80).
4. On the Resynchronize Volume Pair dialog box, select the pairs you want to resynchronize. To remove the pairs in the Resynchronize Volume Pair Volume List, select and right-click the pair, and then select the Delete command in the menu. 5. 6. Select the desired copy pace from the Copy Pace list. Select the resync type for each pair from the Resync Type list. WARNING! Make sure to select the correct resync direction.
Deleting Pairs The Delete Volume Pair dialog box (see Figure 36 (page 82)) allows you to delete the pairs. Note that the deleting pair is an operation to stop copying data into the T-VOL of an SIz pair, and set the status of the S-VOL and T-VOL back to Simplex. Figure 36 Delete Pair Dialog Box The Delete Pair dialog box consists of the following components.
a. b. c. Wait until all write I/Os from the host to the S-VOL are complete. Set the S-VOL offline from the host to prevent the S-VOL from being updated during or after the Delete Volume Pair operation. After the S-VOL is offline, suspend the pair to copy all pending updates to the T-VOL. When the pair status changes to Split, the S-VOL and T-VOL are synchronized. 2. 3. Go to the Pair Operation window, and select the desired CU image or S-VOL in the Tree to filter the volumes displayed in the Volume List.
The Detail box in the Detail dialog box has the following features: • The S-VOL Information displays the following information: ◦ Volume ID: The information for the S-VOL display 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#). For details regarding the external volumes, see the HP XP24000/XP20000 External Storage Software User's Guide.
Figure 38 Information Dialog Box The following information displays in the Information dialog box: • ShadowImage for Mainframe pair(s) The number of SIz pairs displays in the format of XXXX / YYYY. XXXX indicates the number of SIz pairs, and YYYY indicates the total number of SIz pair tables, and ShadowImage for Mainframe pair tables. The maximum number of pairs that can be created in one storage system is 16,384, including migration plans and relationships.
YYYY indicates the total number of reserved volumes of ShadowImage for Mainframe and XP Business Copy. Reserved volumes include T-VOLs of ShadowImage for Mainframe and XP Business Copy pairs. • 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 is displayed on the right side of the slash (/).
3. To change the displaying order, click a column title in the list. The list will be sorted based on the items in the clicked column. 4. • If there are more than 16,384 records of operations, the list will be divided into multiple pages and only the list which is currently displayed will be sorted. • If you click the same column title again, you can switch the sorting order (Ascending or Descending).
7 Performing ShadowImage for Mainframe Pair Operations Using XP for Business Continuity Manager Software This chapter provides a brief description for using XP for Business Continuity Manager Software™ to perform ShadowImage for Mainframe pair operations. • Page 88 • Page 88 XP for Business Continuity Manager Software ™and PPRC can both be used to perform the same SIz pair operations.
Table 33 XP for Business Continuity Manager Software CLI Commands Corresponding to the PPRC Commands (continued) PPRC Commands Parameter XP for Business Continuity Manager Software Commands ONLINSEC CSUSPEND CDELPAIR CQUERY DEVN Support Method (parameter/config) Not supported YKSUSPND config PRIM config SEC config QUIESCE Not supported DEVN YKDELETE config PRIM config SEC config DEVN YKQUERY config XP for Business Continuity Manager Software CLI Commands that Correspond to the PPRC
8 Performing ShadowImage for Mainframe Pair Operations Using PPRC This chapter provides instructions for performing ShadowImage for Mainframe operations issuing TSO PPRC and ICKDSF PPRCOPY commands to the HP disk array from the mainframe host. • Page 90 • Page 91 • Page 91 • Page 92 • Page 95 • Page 97 • Page 100 • Page 101 This document does not provide complete instructions for using the PPRC commands.
• You cannot set or reset the reserve attribute by using the PPRC commands. To set or reset the reserve attribute, use the Remote Web Console computer. • The ShadowImage for Mainframe suspend operations cannot be requested using the PPRC commands. The CSUSPEND/PPRCOPY SUSPEND commands execute split operations on ShadowImage for Mainframe pairs. Use the Remote Web Console computer to suspend SIz pairs.
Table 35 PSF Command Operability for ShadowImage for Mainframe Volumes (continued) Item Operability for ShadowImage for Mainframe Path status. Active. Path number. If the volume does not also belong to a TCz pair, 1 is displayed with TCz info. Table 36 (page 92) describes the PSF Read Subsystem Data and DEVSERV Sense Subsystem Status results for SIz volumes.
Table 37 CESTPAIR Command Parameters (Adding Pairs) Parameter Value Description DEVN Device number. PRIM Primary volume (S-VOL): SSID, serial number, If you set a parameter other than the channel connection address, and CU number.1 parameters on the left, the command will be rejected. You must set MSF00 instead of a serial number to request the Add and Split operation. This parameter is valid for MODE(COPY) or MODE(NOCOPY) only.
ESTPAIR (Adding Pairs) Table 38 (page 94) lists and describes the ESTPAIR command parameters that can be used when you create SIz pairs. Table 38 ESTPAIR Command Parameters (Adding Pairs) Parameter Value Description DDNAME, SYSNAME, or UNITADDRESS DDNAME = dname = JCL statement identifying You should specify only one parameter of the the volume. three parameters. The italic part on the left means that it is the arbitrary name.
Figure 41 PPRCOPY ESTPAIR Command //EPAIR JOB // EXEC PGM=ICKDSF //SYSPRINT DD SYSOUT=* //DD1 DD UNIT=SYSDA,DISP=SHR,VOL=SER=DKDE80 //SYSIN DD * PPRCOPY ESTPAIR DDNAME(DD1) PRI(X’0080’,30158,X’00’) SEC(X’0080’,30158,X’01’) MODE(COPY) PACE(15) /* // Splitting Pairs Using PPRC Commands The CSUSPEND and PPRCOPY SUSPEND commands are equivalent to the ShadowImage for Mainframe split pair operation. The CSUSPEND and the PPRCOPY SUSPEND commands must be issued to the S-VOL, and the pair status must be duplex.
Write requests at the S-VOL will start when all QUIESCE conditions are released. The following conditions cause the XP storage system to automatically release the QUIESCE condition: • A CSUSPEND TSO command without the QUIESCE parameter is accepted. • A CDELPAIR TSO command is accepted. • A Delete, Suspend, or Split Pair command (from the Remote Web Console computer) is accepted. • Storage system power-on-reset is executed.
4 account representative before using the QUIESCE option with the HP XP disk array storage system. If the QUIESCE option is issued to certain volumes (for example, active SPOOL, PAGE, or CATALOG datasets, active SYSRES volume), the attached hosts may enter a deadlock condition and may require a storage control IML to correct the condition. CU number or the parameter is valid only for the DKC emulation type 2105 or 2107. Figure 43 (page 97) shows an example of the PPRCOPY SUSPEND command.
Table 41 CESTPAIR Command Parameters (Resynchronizing Pairs) (continued) Parameter Value Description Other than 1 Copy speed of resynchronization will be medium. CRIT Not applicable. SIz does not use this parameter. SIz ignores it. MSGREQ YES MSGREQ function is applicable. For a Resync request on all pairs in a CTG, do not use the MSGREQ function. If you use the MSGREQ function, the job will end abnormally and CC = 8 will be reported. 1, 2 ONLINSEC NO MSGREQ function is not applicable.
Table 42 ESTPAIR Command Parameters (Resynchronizing Pairs) (continued) Parameter Value Description For a Quick Resync request, set MRF00. This parameter is valid for MODE(RESYNC) only. CAUTION: When a Quick Restore operation or a Reverse Copy operation is required and For a Quick Restore request, set MRQ00. This if you specify NO for the ONLINSEC parameter is valid for MODE(RESYNC) only. parameter, the job will end abnormally by reporting CC = 12.
Figure 45 PPRCOPY ESTPAIR with MODE(RESYNC) Parameter //EPAIR JOB // EXEC PGM=ICKDSF //SYSPRINT DD SYSOUT=* //DD1 DD UNIT=SYSDA,DISP=SHR,VOL=SER=DKDE80 //SYSIN DD * PPRCOPY ESTPAIR DDNAME(DD1) PRI(X’0080’,30158,X’00’) SEC(X’0080’,30158,X’01’) MODE(RESYNC) PACE(15) /* // Deleting Pairs Using PPRC Commands The CDELPAIR and PPRCOPY DELPAIR commands are equivalent to the ShadowImage for Mainframe delete pair operation. The CDELPAIR and PPRCOPY DELPAIR commands must be issued to the S-VOL.
Table 44 DELPAIR Command Parameters Parameter Value Description DDNAME, SYSNAME, or UNITADDRESS DDNAME = dname = JCL statement identifying You should specify only one parameter of the the volume. three parameters. The italic part on the left means that it is the arbitrary name. For SYSNAME = sysxxx = SYSNAME in the example, dname means the arbitrary unique ASSGN system control statement. name of the JCL statement which identifies the UNITADDRESS = ccuu = device number. volume.
Table 45 Pair Status Reported by the Host for Volumes in Multiple Pairs Number of SIz Pairs Number of TCz Pairs Status Displayed by Host 0 0 SIMPLEX 1 0 SIz pair status 2 or more 0 SIz pair whose T-VOL has the lowest LDEV ID 0 1 TCz pair status 1 1 TCz pair status 2 or more 1 TCz pair status Table 46 Path Status Displayed by the CQUERY TSO and PPRCOPY QUERY DSF Commands SIz TCz CQUERY TSO Command TCz path exists. S-VOL T-VOL NOTE: PPRCOPY QUERY DSF Command No TCz path exists.
Table 47 Contents that Display when Issuing the CQUERY or the QUERY Command on SIz Pairs (continued) Item SECONDARY-SERIAL Content Serial number of the T-VOL. If you perform the CQUERY TSO command for the T-VOL, the following information is displayed as well as the serial number of the T-VOL. 00ab000nnnnn a: • S: This pair is defined as a CTG. • 0: Other than listed above. b: • @: This pair was split by using the At-Time Split function. • 0: Other than listed above. nnnnn: Serial number of the T-VOL.
Figure 48 CQUERY Command 14.27.58 JOB04573 ANTP8802I CQUERY DEVN(6400) 14.27.58 JOB04573 ANTP0090I CQUERY FORMATTED LVL 4 220 220 VOLUME REPORT 220 ************** PPRC REMOTE COPY CQUERY - VOLUME ******************** 220 * (PRIMARY) (SECONDARY) * 220 * SSID CCA LSS SSID CCA LSS* 220 *DEVICE LEVEL STATE PATH STATUS SERIAL# SERIAL# * 220 *------ --------- ---------- ----------- ----------------- * 220 * 6400 PRIMARY.. DUPLEX.... ACTIVE.. 2700 00 00 2700 01 00 * 220 * CRIT(NO)....... CGRPLB(NO).
Figure 49 PPRCOPY QUERY Command 0 0 PPRCOPY -ICK00700I 0ICK04030I 0 0 0 DEVICE 0-----6400 QUERY UNIT(6400) DEVICE INFORMATION FOR 6400 IS CURRENTLY AS FOLLOWS: PHYSICAL DEVICE = 3390 STORAGE CONTROLLER = 2105 STORAGE CONTROL DESCRIPTOR = E8 DEVICE DESCRIPTOR = 0A ADDITIONAL DEVICE INFORMATION = 4A000035 TRKS/CYL = 15, # PRIMARY CYLS = 3339 DEVICE IS A PEER TO PEER REMOTE COPY VOLUME LEVEL --------PRIMARY QUERY REMOTE COPY - VOLUME STATE -------------DUPLEX PATH STATUS ----------ACTIVE (PRIMARY) SSID
9 Troubleshooting This chapter provides troubleshooting information for ShadowImage for Mainframe and instructions for calling technical support. • Page 106 • Page 107 • Page 108 Troubleshooting If you have a problem with Remote Web Console, see the HP XP24000/XP20000 Remote Web Console User's Guide for troubleshooting information. Table 50 (page 106) provides general troubleshooting instructions for ShadowImage for Mainframe operations.
Figure 50 Error Dialog Box SIM Reporting The storage system reports a service information message (SIM) to the host when it is necessary to notify the user of a possible service requirement for the storage system. The SIMs are classified according to severity for reporting and logging purposes: 1. Service 2. Moderate 3. Serious 4. Acute The larger the number becomes, more the message becomes important.
Table 51 SIM for ShadowImage for Mainframe Reference Code SSB22 47 Importance Level Descriptions SSB23 Dx Moderate Copying process ends abnormally and the pair status changes to Suspend. • x indicates the last digit of the T-VOL’s CU number (0x0 to 0xF). • SSB13 indicates the T-VOL’s LDEV number. 47 E7 Moderate The pair status changes to PSUE because the power supply was turned on while the shared memory volatilized.
10 Support and Other Resources Related Documentation • HP XP24000/XP20000 Remote Web Console User's Guide • HP XP24000/XP20000 External Storage Software User's Guide • HP XP for Business Continuity Manager Software User's Guide • HP XP24000/XP20000 for FlashCopy Mirroring Software User's Guide • HP XP24000/XP20000 Performance Monitor User's Guide • HP XP24000/XP20000 Performance Control User's Guide • HP XP24000/XP20000 Auto LUN Software User's Guide • HP XP24000/XP20000 Snapshot User's Guide
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 C CTG Consistency group. CU Control unit. CVS Custom volume size. D DFW DASD fast write. DKC Disk controller. L LD, LDEV Logical device. An LDEV is created when a RAID group is carved into pieces according to the selected host emulation mode (that is, OPEN-3, OPEN-8, OPEN-9). The number of resulting LDEVs depends on the selected emulation mode. The term LDEV is also known as term volume. LDKC Logical disk controller. LVI Logical volume or image (for example, 3390-3R).
T T-VOL Target volume. TB Terabyte. Equivalent to 1,000 Gb for data storage and statistics, or 1,024 Gb for memory. TCA TrueCopy Asynchronous. TCz Hitachi TrueCopy™ for Mainframe. TSO Time sharing option. U URz Universal Replicator for Mainframe. USP Universal Storage Platform. X XRC 112 Extended remote copy.
Index A J add operation, 10 adding new pairs using PPRC, 92 At-Time Split, 76 journal volumes, 40 C O Cache Residency Manager for Mainframe, 27 CDELPAIR (PPRC command), 100 CESTPAIR (PPRC command), 92 CESTPAIR MODE(RESYNC) (PPRC command), 97 conventions storage capacity values, 109 Copy Threshold option, 25 CQUERY (PPRC command), 101 CSUSPEND (PPRC command), 95 CTG, 66, 76 CTG window, 58 custom-sized volumes, 39 operations add, 10, 68 delete, 19 normal resync, 14 quick restore, 17 quick resync, 15 qu
Reset Reserve Attribute dialog box, 65 resync (status), 22 resync operations, 14 resync-R (status), 23 Resynchronize Volume Pair dialog box, 79 resynchronizing pairs, 79 using PPRC, 97 reverse copy operation, 16 S service information message, 107 Set Reserve Attribute dialog box, 64 ShadowImage for Mainframe adding pairs, 68 combining with other features, 27 components, 8 deleting pairs, 82 initial copy operation, 10 operations, 10 resynchronizing pairs, 79 sharing volumes with TCz, 28 sharing volumes with
