HP XP 9000 Compatible XRC User Guide Abstract This guide describes and provides instructions to use HP XP P9000 Compatible Extended Remote Copy Software on HP XP P9000 disk arrays. The intended audience is a storage system administrator or authorized service provider with independent knowledge of HP XP P9000 disk arrays and the HP Remote Web Console.
© Copyright 2010, 2012 Hewlett-Packard Development Company, L.P. Confidential computer software. Valid license from HP required for possession, use or copying. Consistent with FAR 12.211 and 12.212, Commercial Computer Software, Computer Software Documentation, and Technical Data for Commercial Items are licensed to the U.S. Government under vendor's standard commercial license. The information contained herein is subject to change without notice.
Contents 1 Overview of Compatible XRC......................................................................5 Function overview.....................................................................................................................5 Sessions.............................................................................................................................5 TSO commands...................................................................................................................
6 Support and other resources......................................................................23 Contacting HP........................................................................................................................23 Subscription service............................................................................................................23 Documentation feedback....................................................................................................
1 Overview of Compatible XRC This topic provides an overview of the Compatible XRC (Compatible XRC) feature and configuration. Function overview The Compatible XRC feature (Compatible XRC) for the XP P9500 provides compatibility with IBM Extended Remote Copy (hereinafter called "XRC") asynchronous remote copy operations for data backup and recovery in the event of a disaster. Compatible XRC, used in mainframe systems, has interoperability with the XRC feature and is provided as the program product.
SDM manages definitions of sessions and SC sessions. They are defined for session IDs and volumes by TSO command in the storage system. TSO commands The following settings concerning XRC operations are defined by the Time Sharing Option (TSO) commands issued to the storage system from the host system.
Figure 2 Channel Extender connection configuration for Compatible XRC Configuration 7
2 Requirements and restrictions This topic provides system requirements and restrictions for using Compatible XRC. System requirements The Compatible XRC system requirements are: • Primary host If the system in the primary site consists of several hosts, a SYSPLEX timer is required in the primary host to provide a common time reference for the I/O time-stamping function. • Secondary host The secondary host requires the System Data Mover (SDM) host software for remote copy operations.
Table 1 Features supported by Compatible XRC Feature Description XRC2 XRC3 DEV blocking Sidefile threshold tuning feature for each volume. Supported Supported Unplanned outage Differential copy feature for unplanned outage achieved by the differential bit management in the storage system. Not supported Supported CNT MULTI path Alternate path retry feature for CNT USD1 connections. Not supported Supported Fix utility Fix or Float of Utility DEV setting feature.
Table 3 Number of sessions per volume Session Type Device Emulation Type (3390-1, 3390-2, 3390-3, 3390-3R, 3390-9, 3390-A, 3390-L, 3390-M) Number of CC Sessions Number of Compatible XRC Sessions CC only 16 N/A CC and XRC2 15 1 CC and XRC3 Single Reader 15 1 CC and XRC3 Multiple Reader 15 1 (Primary session) 0-15 (Auxiliary Sessions) Performance considerations Note the following important performance considerations for Compatible XRC operations: • Block size.
Table 4 Behavior of storage system - block option is "Volume Level" (continued) Compatible XRC Options Behavior of the XP P9500 disk array Option Setting "Do not Block" is Specified by "Do not Block"is Not Specified by SDM ("Block" is SDM Specified) Level 2 Suspend Enable* — — Disable Even when the amount of used sidefile capacity exceeds the level-2 threshold, level-2 suspension does not occur and the storage system does not report SCP-SCI to the host.
Table 5 Behavior of storage system - block option is “Cache Level” (continued) Compatible XRC Options Behavior of the XP P9500 disk array Option Do not Block is specified by SDM and Do not Do not Block is Not specified by SDM (Block Block (Volume Level) is enabled is specified) or Do not Block (Volume Level) is disabled Setting 1. When you specify the [Do not Block] in the Xaddpair command parameter, enable the [Do not Block] in the Compatible XRC option settings. 2.
Setting change of the processor blade assigned to LDEVs The processor blade assigned to the LDEV that is used as a utility volume for Compatible XRC can be changed only when the XRC session is suspended and the number of the side files of the target session is zero. Replacing online microcode Execution of DEVSERV command on user terminal may display RDF status in EFC field when the device is online to the IBM host and the online microcode is replaced earlier than 70-03-3x with 70-03-3x and later.
3 Interoperability with other products and functions This chapter provides information about Compatible XRC interoperability with other products and functions. Terminology Business Copy Z volumes displayed in the Remote Web Console windows and messages differ between Remote Web Console main windows and secondary windows. The differences are shown below.
Figure 3 Double Compatible XRC Pairs Using Compatible XRC in conjunction with Continuous Access Synchronous Z The XP P9500 supports the use of Compatible XRC in conjunction with Continuous Access Synchronous Z (Cnt Ac-S Z) to maintain three copies of critical data at your primary and/or secondary sites for disaster recovery purposes.
Volume functioning as Compatible XRC P-VOL and BC Z S-VOL The following figure shows the configuration in which a volume is functioning as both a Compatible XRC P-VOL and a BC Z S-VOL. In this configuration, data is copied within the primary site using BC Z, and it is copied from the primary site to the secondary site using Compatible XRC.
Using Compatible XRC in conjunction with Compatible FlashCopy The XP P9500 supports the use of Compatible XRC in conjunction with Compatible FlashCopy (Compatible FlashCopy) to maintain data in the secondary site and the primary site for disaster recovery and data migration purposes. Volume functioning as Compatible XRC P-VOL and Compatible FlashCopy S-VOL The following figure shows the configuration in which a volume is functioning as both a Compatible XRC P-VOL and a Compatible FlashCopy S-VOL.
Figure 11 One Volume Functioning as P-VOL and S-VOL, and Another Volume Functioning as S-VOL and S-VOL Using Compatible XRC in conjunction with Compatible FlashCopy SE For details, see the topic on interoperability with other products and functions in the HP XP P9000 for Compatible FlashCopy Mirroring User Guide. Using Compatible XRC in conjunction with Thin Provisioning Z or Smart Tiers Z You can use Thin Provisioning Z or Smart Tiers Z for the Compatible XRC P-VOL and S-VOL.
4 Using Compatible XRC This topic provides instructions for using the features of Compatible XRC. Launching Compatible XRC Procedure 1 To open the Compatible XRC window: 1. 2. Log on to the P9500 Log into Remote Web Console. The Remote Web Console main window appears. 3. On the Remote Web Console menu bar, click Action > Mainframe Connection > XRC. The Compatible XRC window appears. 4. Change to Modify mode.
1. 2. On the Preview list in the XRC Option window, right-click the CLPR for which you want to change the option settings. Click Change on the pop-up menu. The Change Option window appears. 3. 4. In the Option Change window, change the settings of the Compatible XRC. When you have finished changing the settings, click OK. The Change Option window closes and the new settings are reflected on the Preview list in the XRC Option window. This completes the changing of settings of the Preview list.
5 Troubleshooting This topic provides troubleshooting information for Compatible XRC. General troubleshooting For troubleshooting errors encountered during the Compatible XRC operation, see the HP XP P9000 Remote Web Console Messages. For troubleshooting the general errors of Remote Web Console, see the HP XP P9000 Remote Web Console User Guide. Console messages The table shows how to solve the problems when the console messages appear while you are operating the Compatible XRC.
Table 8 Compatible XRC console messages and troubleshooting (continued) Console message Description ANTX5124W If the Compatible XRC pairs are deleted when a number of sidefiles of the Compatible XRC pairs remain in cache, this message appears, and a time-out error might occur. Deleting the Compatible XRC pairs must not be performed.
6 Support and other resources Contacting HP For worldwide technical support information, see the HP support website: http://www.hp.
• http://www.hp.com/support/downloads • http://www.hp.
CAUTION: IMPORTANT: NOTE: TIP: Indicates that failure to follow directions could result in damage to equipment or data. Provides clarifying information or specific instructions. Provides additional information. Provides helpful hints and shortcuts.
A Controlling the amount of write data This topic describes how to control the amount of write data the storage system performs according to the sidefile capacity. When block option is set to cache level When the Cache Level block option is selected, depending on the sidefile capacity, the storage system performs one of the following three levels for controlling the amount of write data.
SDM; the default threshold is 0x500.When Level 1 Sleep is set to Disable, write I/Os to volumes are not put in a wait status. • Level 1: This level of control is performed when the sidefile capacity is equal to or larger than the level-1 threshold, and is smaller than the level-2 threshold. Write I/Os to volumes are put in a wait status by command retry when the sleep wait threshold (that is, level-1 threshold) is exceeded.
B Conventions This appendix describes phrases in this manual that correspond to phrases in the Remote Web Console windows and messages. Business Copy Z volumes Business Copy Z volumes displayed in the Remote Web Console windows and messages differ between Remote Web Console main windows and secondary windows. The differences are shown below.
C Compatible XRC GUI reference This topic describes the Compatible XRC window and the Change Option window. Compatible XRC window The following table shows the items in the Compatible XRC window. Item Description Compatible XRC option list CLPR CLPR number. LV2 THD Threshold shown in Level 2 Threshold in the Change Option window. Block Option Setting shown in Block Option in the Change Option window. Do not Block (Vol LV) Setting shown in Do not Block (Volume Level) in the Change Option window.
Change option window To open the Change Option window, right-click the desired CLPR in the Compatible XRC option list, and then select Change Option. The following table shows the items in the Change Option window. Item Description CLPR list Select the desired CLPR. The same setting is applied. Check this box to apply the settings to all CLPRs. Clear this box to apply the settings only to the selected CLPR.
Item Description Do not Block (Volume Level) Sets whether the storage system controls the amount of write I/Os to the specified volume. • Enable - does not control the amount of data to be written to the specified volume. Write I/Os from hosts are not put in a wait status. When Block Option is set to Volume Level, Enable is set. For details, see “Troubleshooting” (page 21). • Disable - controls four levels of write data based on the sidefile capacity.
Glossary ATM Asynchronous transfer mode. BC P9000 or XP Business Copy. An HP application that provides volume-level, point-in-time copies in the disk array. BC z This is the version of BC that supports mainframe volumes. See BC for more information. bit The basic unit of data in a binary numbering system (binary digit), represented by a 0 or a 1. Eight bits equals one byte. CLPR Cache logical partition. CNT Computer network technologies.
Index B Block option, 11 Business Copy for Mainframe using with Compatible XRC, 15 C Cache logical partition, multiples, 12 Channel extenders, 6, 8 CNT extender, 9 Commands reverse copy and quick restore, 14 xaddpair, 12 xdelpair, 12 Commns TSO commands, 6 Compatible XRC channel extenders, 6 Compatible XRC window, 19 concurrent copy sessions, 9 overview of operations, 26 setting options, 19 sharing volumes, 14 system requirements, 8 troubleshooting, 21 using double pairs, 14 using TSO commands, 6 using wit
Sessions Compatible XRC, 9 concurrent copy, 9 Settings Compatible XRC options, 19 Sidefile cache memory, 5 capacity, 10 data, 5 puncture, 26 Sleep set to enable, 26 wait cmd retry, 11 wait command, 10 wait threshold, 10 Source volume, 16 storage capacity values conventions, 24 Storage control sessions, 5, 12 Subscriber's Choice, HP, 23 symbols in text, 24 Sysplex timer, 6, 8 System data mover, 12 requirements, 8 System data mover, 5 T technical support HP, 23 service locator website, 23 text symbols, 24 Ti
