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HP xp12000 User Manual

Continuous access xp
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HP StorageWorks
Continuous Access XP user guide
for the XP12000/XP10000
Part number: T1711-96005
Third edition: March 2006

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Summary of Contents for HP xp12000

  • Page 1 HP StorageWorks Continuous Access XP user guide for the XP12000/XP10000 Part number: T1711-96005 Third edition: March 2006...
  • Page 2 Government under vendor’s standard commercial license. The information contained herein is subject to change without notice. The only warranties for HP products and services are set forth in the express warranty statements accompanying such products and services. Nothing herein should be construed as constituting an additional warranty. HP shall not be liable for technical or editorial errors or omissions contained herein.

  • Page 3: Table Of Contents

    Helpful web sites ............. 11 1 Continuous Access XP for the XP12000/XP10000 ......13 Overview of Continuous Access XP operations .
  • Page 4 Cache and nonvolatile storage (NVS) ..........32 Host failover software .
  • Page 5 Switch connection ............35 Continuous Access XP user guide for the XP12000/XP10000...
  • Page 6 Extender connection............35 Add RCU and RCU Option panes .
  • Page 7 28 Determining Continuous Access XP Synchronous S-VOL currency based on its pair status and P-VOL fence-lev- el setting113 29 Determining Continuous Access XP Async S-VOL consistency based on its pair status and consistency status Continuous Access XP user guide for the XP12000/XP10000...

  • Page 9: About This Guide

    114 • ”Pinned track recovery for Continuous Access XP volumes” on page 115 Intended audience This guide is intended for customers and HP-authorized service providers with knowledge of the following: • Disk array hardware and software •...

  • Page 10: Document Conventions And Symbols

    Provides additional information. TIP: Provides helpful hints and shortcuts. HP technical support Telephone numbers for worldwide technical support are listed on the HP support web site: http://www.hp.com/support/. Collect the following information before calling: • Technical support registration number (if applicable) •...

  • Page 11: Subscription Service

    Subscription service HP strongly recommends that customers register online using the Subscriber’s choice web site at http://www.hp.com/go/e-updates. Subscribing to this service provides you with e-mail updates on the latest product enhancements, newest driver versions, and firmware documentation updates as well as instant access to numerous other product resources.

  • Page 13: Continuous Access Xp For The Xp12000/Xp10000

    Continuous Access XP for the XP12000/XP10000 HP StorageWorks Continuous Access XP creates and maintains duplicate copies of user data from a local disk array on a remote disk array. These copies are useful for data duplication, backup, and disaster recovery. Continuous Access XP has synchronous and asynchronous copy modes to accommodate a wide variety of user requirements and data copy or movement scenarios.

  • Page 14: Components

    25 Components Continuous Access XP operations involve the XP12000/XP10000 at a primary and secondary (remote) site, physical communications paths between these disk arrays, and Command View XP or XP Remote Web Console. Continuous Access XP copies online data at the primary site to volumes at the secondary site via dedicated Fibre Channel remote copy connections.

  • Page 15: Main And Remote Control Units (Mcus And Rcus)

    The MCU and RCU can be defined separately for each Continuous Access XP volume pair. The XP12000/XP10000 CU can function simultaneously as an MCU for one or more P-VOLs and as an RCU for one or more S-VOLs, provided the remote copy connections and Fibre Channel or serial interface ports are properly configured.

  • Page 16: Volume Pairs (P-Vols And S-Vols)

    ”S-VOL write option” on page 20). Continuous Access XP supports basic logical unit (LU) types available on the XP12000/XP10000. Continuous Access XP also supports Volume Manager, CVS, and Cache LUN XP features, ensuring that all user data can be backed up or duplicated. See ”Logical unit (LU)

  • Page 17: Remote Copy Connections

    One XP12000/XP10000 as an MCU can be connected to only one XP12000/XP10000 as an RCU via optical fibre cables. For CU images within one XP12000/XP10000, 1-to-4 and 4-to-1 remote copy connections are supported via direct connects or an FC switch.

  • Page 18: Remote Control Ports (Rcps) And Local Control Ports (Lcps)

    RCU target ports are (Continuous Access XP) dedicated Fibre Channel interface ports on the remote disk array (RCU) to which MCUs (initiator ports) are connected. You can configure Fibre Channel interface ports of the XP12000/XP10000 as RCU target ports. For performance reasons, RCU target ports should not be shared with host connects.

  • Page 19: Remote Copy Operations

    Write data to the track-end, whose total length is long enough to pass the track-end • Write data to the last track for the command NOTE: No matter how long the write data is, update copy is executed for each track. Continuous Access XP user guide for the XP12000/XP10000...

  • Page 20: Read And Write I/O Operations For Continuous Access Xp Volumes

    To reduce overhead associated with Continuous Access XP remote copy operations, the XP12000/XP10000 uses a special write command that is allowed only for Continuous Access XP initial and update copy operations. This Continuous Access XP command transfers control parameters and FBA-format data, which includes consecutive updated records in each track, using a single write operation.

  • Page 21: Continuous Access Xp Asynchronous Recordset Operations

    The parameter length and detailed specification of the Continuous Access XP Asynchronous channel command are different than for Continuous Access XP Synchronous RIOs. You must ensure that your channel extenders support this command. For further details, contact your HP account support representative.

  • Page 22: Selecting And Settling Recordsets At The Rcu

    XP Asynchronous recordsets. Because sidefiles occupy exclusive space in cache, both the MCU and RCU perform inflow control to prevent an overload of the disk array’s cache resources. The XP12000/XP10000 uses certain parameters for Continuous Access XP Asynchronous cache inflow control. Use the Continuous Access XP Async Option pane to modify the following parameters (see ”Asynchronous copy...

  • Page 23: Inflow Control By Mcu

    HP Cache LUN XP operations might decrease total amount of cache available for Continuous Access XP Asynchronous operations, but they do not directly affect sidefile cache usage. Available cache is the amount of physical cache memory installed on the disk array minus any cache reserved for the HP Cache LUN XP feature.

  • Page 24: Copy Pending Timeout

    S-VOL and can change the pair status of the S-VOL but not the P-VOL. The MCU detects when the RCU changes the S-VOL status (if path status is normal) and changes the P-VOL status Continuous Access XP for the XP12000/XP10000...

  • Page 25: Continuous Access Xp Volume Pair Status

    This pair is not yet synchronized. When initial copy is complete, the status changes to PAIR. PAIR Pair is synchronized. Updates to the P-VOL are Read/write Read only duplicated on the S-VOL. Continuous Access XP user guide for the XP12000/XP10000...
  • Page 26 ”Continuous Access XP Asynchronous suspension conditions” on page 30), the RCU changes the S-VOL status to PSUE, and the MCU detects this (if path status is normal) and changes the P-VOL status to PSUE. Continuous Access XP for the XP12000/XP10000...

  • Page 27: Continuous Access Xp Split Types (Psus)

    S-VOL cylinders updated while the pair is split. When the pair is resumed, the RCU sends the S-VOL cylinder bitmap to the MCU, and the MCU merges the P-VOL and S-VOL bitmaps to determine which cylinders are out-of-sync. Continuous Access XP user guide for the XP12000/XP10000...

  • Page 28: Continuous Access Xp Suspend Types

    The MCU detects an error condition related to the RCU, S-VOL, or Continuous Access XP update copy operation • The MCU cannot communicate with the RCU • The MCU detects a Continuous Access XP Asynchronous suspension condition Continuous Access XP for the XP12000/XP10000...

  • Page 29: Continuous Access Xp Suspend Types

    P-VOL, S-VOL The amount of sidefile exceeds the specified “current pending Sidefile overflow update data rate,” and the RCU data is not transferred within the Continuous Access specified “offloading timer.” Async only) Continuous Access XP user guide for the XP12000/XP10000...

  • Page 30: Continuous Access Xp Asynchronous Suspension Conditions

    For more information about Continuous Access XP Asynchronous suspension conditions, see the Troubleshooting chapter of the HP StorageWorks Command View XP user guide for XP Disk Arrays or the HP StorageWorks XP Remote Web Console user guide for XP12000/XP10000.

  • Page 31: Preparing For Continuous Access Xp Operations

    UNIX-based and/or PC server platforms: The disk array supports Continuous Access XP operations for a variety of UNIX and PC-server platforms, including the Sun® Solaris®, IBM® AIX®, HP-UX®, and Windows NT® platforms. Contact your HP account support representative for the latest information on XP12000/XP10000 platform support for Continuous Access XP.

  • Page 32: Consistency Groups

    3380-KA/B/C) cannot be assigned to Continuous Access XP pairs. NOTE: Contact your HP account support representative for the latest information on supported devices for your platform. Continuous Access XP supports the LU Size Expansion (LUSE) feature of the disk array, which configures expanded LUs using two or more contiguous LDEVs (up to 36).

  • Page 33: Duplicate Volumes

    This can be confusing and is prone to error. If Continuous Access XP S-VOLs and P-VOLs are connected to the same hosts, HP strongly recommends that you define S-VOLs to remain offline (or create them with the RAID Manager ‘no read’ option) to avoid this problem.

  • Page 34: Fibre Channel Remote Copy Connections

    HP representative: If power sequence control cables are used, set the power select switch for the cluster to LOCAL to prevent the host from powering off the MCU. Also ensure that the RCU will not be powered off during Continuous Access XP operations. See ”Powering off and on Continuous Access XP...

  • Page 35: Configuring Mcus And Rcus For Continuous Access Xp Operations

    ID, and LUN of each volume. If Performance Advisor (PA) is connected to the disk array being configured as a Continuous Access XP MCU, disconnect PA to avoid contention on the internal LAN. Continuous Access XP user guide for the XP12000/XP10000...

  • Page 36: Add Rcu And Rcu Option Panes

    Add RCU and RCU Option panes If you plan to create Continuous Access XP Async pairs with P-VOLs in this MCU, configure Async options using the Async Option pane (see ”Asynchronous copy option” on page 82 for instructions). Continuous Access XP for the XP12000/XP10000...

  • Page 37: Combining Continuous Access Xp With Other Data Management Operations

    Continuous Continuous Continuous Access XP P-VOL? Access XP S-VOL? Access XP Access XP Asynchronous Asynchronous P-VOL? S-VOL? Volume Manager LUSE volume Business Copy XP P-VOL in PSUS status P-VOL in COPY(RS-R) status Continuous Access XP user guide for the XP12000/XP10000...
  • Page 38 P-VOL, used as an S-VOL, used as a P-VOL, used as an S-VOL, volume migration volume migration volume migration volume migration stops. stops. stops. stops. Continuous Access XP for the XP12000/XP10000...
  • Page 39 Continuous Access XP pair or perform a RAID Manager horctakeover operation. Secondary data volume in COPY status Secondary data volume in PAIR status Secondary data volume in PSUS status Continuous Access XP user guide for the XP12000/XP10000...
  • Page 40 Serverless Backup Enabler Serverless Backup Enabler volume Virtual LUN Virtual LUN volume LUN Manager Volume to which a path is defined Volume to which no path is defined Volume to which LUN security is applied Continuous Access XP for the XP12000/XP10000...

  • Page 41: Combining Continuous Access Xp And Bc

    Access XP volumes, BC XP volumes, and Continuous Access XP/BC shared volumes. Table 13 shows currency of data on a shared Continuous Access XP/BC volume based on Continuous Access XP and BC pair status. For more information abut Business Copy XP, see the HP StorageWorks Business Copy XP user guide for the XP12000/XP10000. NOTE: HP recommends Business Copy (BC) intra-disk array copy operations.

  • Page 42: Shared Continuous Access Xp P-Vol/Business Copy Xp P-Vol

    11. Within a single Continuous Access XP pair, the P-VOL and S-VOL function as BC P-VOLs, providing multiple copies at primary and remote sites. Figure 12 Shared Continuous Access XP/BC P-VOL with shared Continuous Access XP S-VOL/BC P-VOL Continuous Access XP for the XP12000/XP10000...

  • Page 43: Combining Continuous Access Xp And Lun Security Xp Extension

    VMA is set, you can copy the P-VOL’s access attribute recorded in the VMA to the S-VOL. You can set the VMA required to copy the access attribute only to OPEN-V volumes. For more information about LUN Security XP Extension, see the HP StorageWorks LUN Security XP Extension user guide.
  • Page 44 Pairsplit-S operation and make the pair status PSUS or SMPL. However, even if the pair is suspended, the S-VOL Disable setting is not effective. To make the S-VOL Disable setting effective, delete the pair. For more information about pair status and operations related to the access attribute, see Table 16. Continuous Access XP for the XP12000/XP10000...

  • Page 45: License Capacity For Lun Security Xp Extension

    S-VOLs in the disk array on the secondary site. This is because when the copying access attributes is complete, P-VOLs and S-VOLs have the same access attributes. For more information about copying access attribute, see Figure Continuous Access XP user guide for the XP12000/XP10000...

  • Page 46: Combining Continuous Access Xp And Volume Manager

    LUSE volume consisting of LDEVs set across more than one CU cannot create a pair with the volume of an XP12000 disk array because CU Free cannot be added as an RCU with the XP12000 and disk array. Combining Continuous Access XP and Custom Volume Size (CVS) Custom volumes can be assigned to Continuous Access XP pairs if the S-VOL has the same capacity as the P-VOL.

  • Page 47: Combining Continuous Access Xp And Auto Lun Xp

    LAN, so inquiries and commands that the Command View XP management station or XP Remote Web Console issues are processed more quickly. For more information about Auto LUN XP, see the HP StorageWorks Auto LUN XP user guide for the XP12000/XP10000.

  • Page 48: Starting Continuous Access Xp

    Partition-level users in the StorageAdmins group cannot perform Continuous Access XP operations. For more information about limitations, see the HP StorageWorks Command View XP user guide for XP Disk Arrays or the HP StorageWorks XP Remote Web Console user guide for XP12000/XP10000.

  • Page 49: Continuous Access Xp Functions

    Deletes consistency groups that are already assigned. Delete CT Group Async Option Sets and modifies asynchronous copy options. Usage Monitor — Collects and displays I/O statistics using the Remote Copy Monitoring function. Continuous Access XP user guide for the XP12000/XP10000...

  • Page 50: Continuous Access Xp Main Pane (Pair Operation Pane)

    To sort items, click the column heading (such as Status or Port). Not all items in the Volume list can be displayed at one time. To see all items in the list, use the scroll bar below the Volume list. Continuous Access XP for the XP12000/XP10000...

  • Page 51: Volume Icons For Continuous Access Xp Operations

    (LUN). NOTE: If # is added to the end of an LDEV number, such as 00:3C#, the LDEV is an external volume. For details about external volumes, see the HP StorageWorks External Storage XP user guide. • Status: See ”Continuous Access XP volume pair...

  • Page 52: Display Filter Pane

    If the LU is set to more than one path, the LU specified at paircreate is displayed. NOTE: If # is added to the end of an LDEV number, such as 00:3C#, the LDEV is an external volume. For more information about external volumes, see the HP StorageWorks External Storage XP user guide. •...

  • Page 53: Continuous Access Xp Snapshot Function

    This function writes user-selected Continuous Access XP pair status information to a text file on the array, which you can then download. Status information reported in this file is determined by selections on the Display Filter pane. Use this function to verify completion of Continuous Access XP operations. Continuous Access XP user guide for the XP12000/XP10000...

  • Page 54: Creating And Exporting (Downloading) Continuous Access Xp Snapshot Files

    NOTE: If # is added to the end of an LDEV number, such as 00:3C#, the LDEV is an external volume. For more information about external volumes, see the HP StorageWorks External Storage XP user guide. NOTE: The host group name or iSCSI target name of the LU on the primary site is indicated by up to 8 characters.

  • Page 55: Cu Number Tree And Mcu/Rcu List

    ) for the affected CU image. Select the subsystem to display all MCU/RCU information in the Port list on the right. Figure 19 RCU Operation pane with the MCU&RCU option button selected Continuous Access XP user guide for the XP12000/XP10000...

  • Page 56: Port Tree And Port List

    , External: ). Only ports that can be selected for remote copy operations are displayed. Figure 20 RCU Operation pane with the Port option button selected • Port: Cluster and port number (1A - 2R). Continuous Access XP for the XP12000/XP10000...

  • Page 57: Asynchronous Operation Pane

    • RCU: The consistency group is registered from the paired CU (the local CU is RCU). • M&R: MCU and RCU are in the same disk array. • M-R Path: Fibre Channel or serial. When the consistency group is not registered, the column is blank. Continuous Access XP user guide for the XP12000/XP10000...

  • Page 58: Usage Monitor Pane

    • CLPR: Number and name of the CLPR to which the volumes forming the pair belong. If the consistency group is not in use, this column is blank. For more information about CLPRs, see the HP StorageWorks XP Disk/Cache Partition user guide. •...

  • Page 59: History Operations Pane

    • Start Date/Time: Date and time operation was started. • Operation: Operations are: • Pairing Start: Add pair operation was started. • Pairing Complete: Add pair operation was completed. • Pair Delete: Pair was deleted. Continuous Access XP user guide for the XP12000/XP10000...

  • Page 60: Other Operation Pane

    List: Subsystem setting information. • Preset List: Settings before you select Apply to change or delete settings. To change or delete settings, right-click the Preset List. • Operation: Status of process in progress. • No Operation Continuous Access XP for the XP12000/XP10000...

  • Page 61: Changing Subsystem Settings

    • Path Blockade SIM Watch (sec.) setting specifies the time for monitoring SIMs that are reported when paths are blocked. The path blockade SIM watch value must be from 1 to 100 seconds. The Continuous Access XP user guide for the XP12000/XP10000...

  • Page 62: Changing Subsystem Settings

    77 • ”Adding consistency groups (Add CT Group)” on page 79 • ”Modifying consistency group options (CT Group Option)” on page 80 • ”Viewing consistency group status (CT Group Status)” on page 78 Continuous Access XP for the XP12000/XP10000...

  • Page 63: Mcu Operations

    Option)” on page 71 • ”Deleting RCUs (Delete RCU)” on page 71 • ”RCU path parameters” on page 72 • ”Adding and deleting logical paths for RCUs (Add Path/Delete Path)” on page 73 Continuous Access XP user guide for the XP12000/XP10000...

  • Page 64: Viewing Rcu Status (Rcu Status)

    In the CU Number/Port tree, click a CU number that includes the RCU you want to display. From the MCU/RCU list, select an RCU, and right-click. Click RCU Status. The RCU Status pane appears. Continuous Access XP for the XP12000/XP10000...

  • Page 65: Rcu Status Pane

    The Path Status field lists the path status. Table 22 describes each status. For troubleshooting information about MCU-RCU paths, see the Troubleshooting chapter of the HP StorageWorks Command View XP user guide for XP Disk Arrays or the HP StorageWorks XP Remote Web Console user guide for XP12000/XP10000.

  • Page 66: Registering Rcus (Add Rcu)

    RCU. After registering an RCU (and path status is normal), create Continuous Access XP pairs with S-VOLs in the newly registered RCU. Use the Add RCU pane to register RCUs to the current CU image of the connected MCU. When you select Add RCU, the Add RCU pane appears. Continuous Access XP for the XP12000/XP10000...

  • Page 67: Add Rcu Pane

    Default check box, and input the value in hexadecimal within the range of 1 to FF. To use the default ID, select the Default check box. • SSID: SSIDs of RCU being registered. The XP12000/XP10000 uses one SSID for each set of 256 volumes and four SSIDs per CU image. The SSID is 4-FFFE in hexadecimal. •...

  • Page 68: Rcu Option Pane

    NOTE: This option is available only for Continuous Access XP Sync pairs. For Continuous Access XP Aync pairs, this option value is invalid. Continuous Access XP for the XP12000/XP10000...

  • Page 69: Registering Rcus To The Connected Mcu

    SSIDs for the CU image in the RCU. The register RCU operation fails without this information. The disk array should have a label or tag indicating its S/N and SSIDs. The HP representative can also get the RCU S/N and SSIDs using the RCU’s service processor (at the remote site).

  • Page 70: Rcu Settings Parameter List

    RCU, right-click, and click RCU Status. For more information about path status, see the Troubleshooting chapter of the HP StorageWorks Command View XP user guide for XP Disk Arrays or the HP StorageWorks XP Remote Web Console user guide for XP12000/XP10000.

  • Page 71: Modifying Rcu Options (Change Rcu Option)

    RCU to the MCU, or remove remote copy connections and reconfigure MCU ports (initiator ports to ordinary target ports for fibre, RCPs to LCPs for serial) to provide additional host channels for the MCU. Continuous Access XP user guide for the XP12000/XP10000...

  • Page 72: Rcu Path Parameters

    RCU target ports, study the port modes and specify the correct mode for each port. Figure 33 Figure 34 show Fibre Channel interface connections going through switches and the Continuous Access XP pane used for this configuration. Figure 33 Fibre Channel interface connections going through switches Continuous Access XP for the XP12000/XP10000...

  • Page 73: Adding And Deleting Logical Paths For Rcus (Add Path/Delete Path)

    Link Address: Link address (serial only). Destination port address on the ESCD (00-FD, 00 for static link to RCU). The Cancel button cancels settings made. The Set button applies settings made and changes the list. Continuous Access XP user guide for the XP12000/XP10000...

  • Page 74: Adding New Logical Paths From The Connected Mcu To An Existing Rcu

    Before adding an SSID, ensure that the remote copy connection is properly installed. You can add three SSIDs to each RCU. Before deleting an SSID, ensure that the remaining SSIDs are valid, or the connection between the MCU and RCU may be lost. Continuous Access XP for the XP12000/XP10000...

  • Page 75: Add Ssid Pane

    After being set, options can be modified and canceled (see ”Modifying parameters and deleting settings” on page 77). Click Apply on the Continuous Access XP main pane to apply settings to the disk array. Continuous Access XP user guide for the XP12000/XP10000...

  • Page 76: Port Change Operation

    RCU Target. For performance reasons, avoid using the same FC card for Continuous Access XP and host connect. Modifying parameters and deleting settings After RCU, Path, and SSID operations, parameters can be modified individually. Also the RCUs, Paths, and/or SSIDs set by each operation can be deleted. Continuous Access XP for the XP12000/XP10000...

  • Page 77: Modifying Parameters And Deleting Settings

    NOTE: After being set, options can be modified and canceled (see ”Modifying parameters and deleting consistency groups” on page 83). Continuous Access XP user guide for the XP12000/XP10000...

  • Page 78: Viewing Consistency Group Status (Ct Group Status)

    NOTE: If # is added to the end of the LDEV number, such as 00:3C#, the LDEV is an external volume. For details about external volumes, see the HP StorageWorks External Storage XP user guide. • MCU-RCU Path: Channel type: fibre or serial.

  • Page 79: Adding Consistency Groups (Add Ct Group)

    RCU ready timeout. Remember that you cannot modify the port type of the group after assigning a pair to the group. Click Set in the Add CT Group pane. The Add CT Group pane closes, and the list changes to the Consistency Group Settings Parameter list. Continuous Access XP user guide for the XP12000/XP10000...

  • Page 80: Modifying Consistency Group Options (Ct Group Option)

    Set button: Sets consistency group options. Connect to the MCU. Split all pairs in the group (Pairsplit-r). From the Consistency Group tree, click a consistency group mode that includes the consistency group to be modified. Continuous Access XP for the XP12000/XP10000...

  • Page 81: Deleting Consistency Groups (Delete Ct Group)

    Asynchronous copy option When the Async Option command is selected, the Async Option pane appears. Use the Async Option pane to specify Continuous Access XP asynchronous copy option parameters for the connected disk array. Continuous Access XP user guide for the XP12000/XP10000...

  • Page 82: Asynchronous Copy Option

    Specify a value not exceeding the I/O Delay Increase for the I/O Delay Start. Specify a value not exceeding the Pending Update Data Rate for the I/O Delay Increase. If sidefile threshold is set between 0 to 30%, influence to the I/O delay is kept low. Continuous Access XP for the XP12000/XP10000...

  • Page 83: Modifying Parameters And Deleting Consistency Groups

    HP recommends that you change the I/O Delay Start and I/O Delay Increase when all Continuous Access XP asynchronous pairs are suspended, or host I/O and sidefiles do not exist. If you do not want to control inflow into a sidefile, specify the value same as the Pending Update Data Rate for the I/O Delay Start and I/O Delay Increase, and specify 0 second for the Offloading Timer.

  • Page 84: Usage Monitor Operations

    = 200,000,000. The Update area displays the most recent data sample time for data on the graph. Click the Usage Monitor tab. Verify that usage monitoring is running (Status = Running). The usage monitor graph can be displayed only when monitoring is on. Continuous Access XP for the XP12000/XP10000...

  • Page 85: Display Item Pane

    Complete the following tasks if needed: • To enlarge the displayed graph, right-click the graph, and click Large Size. • To return the graph to normal size, right-click the graph, and click Normal Size. Continuous Access XP user guide for the XP12000/XP10000...

  • Page 86: Remote Copy I/O Statistics

    Number of recordsets that are scheduled for the settlement of sidefile Recordset Scheduling Miss Count Number of times recordsets do not arrive during the schedule Number of Remained Number of remaining recordsets when the schedule is completed Recordset Continuous Access XP for the XP12000/XP10000...

  • Page 87: Optimizing Continuous Access Xp Operations And Disk Array Performance

    (Paircreate)” on page 93) for each Continuous Access XP pair. In addition, you can upgrade Continuous Access XP hardware components and adjust the configuration of components to improve disk array performance under a wide range of operating conditions. Continuous Access XP user guide for the XP12000/XP10000...

  • Page 88: Discontinuing Continuous Access Xp Operations

    I/Os (if migrating), and discontinue Continuous Access XP operations. When you are ready to discontinue Continuous Access XP operations, perform Continuous Access XP operations in the correct order to avoid error messages. For example, Continuous Access XP will not delete an RCU path until you delete all Continuous Access XP for the XP12000/XP10000...

  • Page 89: Performing Continuous Access Xp Pair Operations

    Command View XP management station to RCUs at your remote site. If you will use RAID Manager commands instead of Continuous Access XP, contact your HP account support representative for information about Continuous Access XP configuration services.

  • Page 90: Common Procedure For Continuous Access Xp Pair Operations

    The Cancel button closes the pane, but does not set parameters. The Cancel All button returns to the Volume list. Modifying parameters and deleting LUs After pair settings operations, LU parameters can be modified individually. LUs selected to be the pairs can be deleted. Continuous Access XP for the XP12000/XP10000...

  • Page 91: Modifying Lu Parameters

    • Capacity in MB (up to two decimal places). • Number of blocks. • CLPR number and name. CLPR number and name are not displayed under a volume paired with the local volume. Continuous Access XP user guide for the XP12000/XP10000...

  • Page 92: Pairdisplay Pane

    NOTE: If an LDEV number contains # at the end (such as 00:3C#), the LDEV is an external volume. For more information about external volumes, see the HP StorageWorks External Storage XP user guide. • CLPR: CLPR number and name of the volume on the primary site.

  • Page 93: Creating Continuous Access Xp Volume Pairs (Paircreate)

    NOTE: If # is added to the end of the LDEV number, such as 00:3C#, the LDEV is an external volume. For details about external volumes, see the HP StorageWorks External Storage XP user guide. • S-VOL: Secondary volume (S-VOL). Specify each item as follows: Port: 1A-2R, Group: 00-7F, LUN: 00-FF.

  • Page 94: Paircreate Pane

    NOTE: Only Continuous Access XP Asynchronous pairs belonging to the same CLPR can be allocated to one consistency group. For more information about CLPRs, see the HP StorageWorks XP Disk/Cache Partition user guide. • Error Level: Error level for Continuous Access XP Async pairs, Group, or LU.

  • Page 95: Continuous Access Xp Initial Copy And Pair Options Of The Paircreate Pane

    Status: The P-VOL is fenced only if the MCU cannot change the S-VOL status to suspended when an update copy operation fails. If the MCU changes the S-VOL status to suspended, subsequent write Continuous Access XP user guide for the XP12000/XP10000...

  • Page 96: Initial Copy Parameters

    Continuous Access XP pairs. Suspended Continuous Access XP Async S-VOLs with LU should not be used for disaster recovery. Continuous Access XP for the XP12000/XP10000...

  • Page 97: Splitting Continuous Access Xp Pairs (Pairsplit-R)

    Volume: Port - G-ID - LUN of the selected volume. NOTE: If # is added to the end of the LDEV number, such as 00:3C#, the LDEV is an external volume. For details about external volumes, see the HP StorageWorks External Storage XP user guide. •...

  • Page 98: Pairsplit-R Pane

    Click Apply on the Continuous Access XP main pane to split specified pairs. For Continuous Access XP Synchronous pairs, the MCU completes all P-VOL write operations in progress and associated update copy operations at the S-VOL before splitting the pair, so the pair is synchronized at the time of pairsplit. Continuous Access XP for the XP12000/XP10000...

  • Page 99: Resuming Continuous Access Xp Volume Pairs (Pairresync)

    Use the Pairresync command to resume split/suspended Continuous Access XP pairs. When the Pairresync command is selected, the Pairresync pane appears. Use the Pairresync pane to change pair options, and select the resync range option (asynchronous) for selected pairs. Continuous Access XP user guide for the XP12000/XP10000...
  • Page 100 P-VOL: Port - G-ID - LUN of the selected volume. NOTE: If # is added to the end of the LDEV number, such as 00:3C#, the LDEV is an external volume. For details about external volumes, see the HP StorageWorks External Storage XP user guide. •...

  • Page 101: Pair Settings Parameter List (Pairresync)

    When the Pairresync pane closes, the list changes to the Pair Settings Parameter list (Pairresync). Figure 51 Pair Settings Parameter list (Pairresync) The Pair Settings Parameter list (Pairresync) view displays the following information for selected pairs: Continuous Access XP user guide for the XP12000/XP10000 101...

  • Page 102: Deleting Continuous Access Xp Volume Pairs (Pairsplit-S)

    Use the Pairsplit-S command to delete one or more Continuous Access XP pairs. When the Pairsplit-S command is selected, the Pairsplit-S pane appears. Use the Pairsplit-S pane to change Pairsplit-S options 102 Continuous Access XP for the XP12000/XP10000...
  • Page 103 Volume: Port - G-ID - LUN of the selected volume. NOTE: If # is added to the end of the LDEV number, such as 00:3C#, the LDEV is an external volume. For details about external volumes, see the HP StorageWorks External Storage XP user guide. •...

  • Page 104: Pair Settings Parameter List (Pairsplit-S)

    S/N and SSID of the RCU (MCU if connected to the RCU). • Mode: Yes (delete forcibly) or No (delete normally). • Range: Range for deleting the asynchronous pair: Group, LU, or C/T. 104 Continuous Access XP for the XP12000/XP10000...

  • Page 105: Changing Pair Options (Change Pair Option)

    Volume: Port - G-ID, LUN of the selected volume. NOTE: If # is added to the end of the LDEV number, such as 00:3C#, the LDEV is an external volume. For details about external volumes, see the HP StorageWorks External Storage XP user guide. •...

  • Page 106: Using Continuous Access Xp For Data Migration And Duplication

    HA software functions. NOTE: To migrate data from other vendors’ storage disk arrays onto the disk array, contact your HP account support representative. Vary the S-VOLs offline from all attached hosts. S-VOLs are target volumes onto which you are migrating data.

  • Page 107: Point-In-Time Data Duplication Using Continuous Access Xp Asynchronous

    You are responsible for controlling power-off activities for disk arrays involved in Continuous Access XP operations. If you need to power off the disk array, call your HP representative or HP technical support for assistance. The following sections provide instructions for performing planned outages of Continuous Access XP components.

  • Page 108: Planned Outage Of Mcus

    Unfortunately, some disasters are not so “orderly” and involve intermittent or gradual failures occurring over a longer period of time. You should anticipate and plan for all types of failures and disasters. Major steps in preparing for disaster recovery are: 108 Continuous Access XP for the XP12000/XP10000...

  • Page 109: Considering The P-Vol Fence-Level Setting

    S-VOL to PSUE. Update copy operation failed, Write I/O operations to the REJECTED REJECTED Accepted and the MCU could NOT P-VOL will be: change the status of the S-VOL to PSUE. Continuous Access XP user guide for the XP12000/XP10000 109...

  • Page 110: Setting The Fence Level

    MCU/RCU sends sense information with unit check status to the appropriate hosts. This sense information is used during disaster recovery to determine currency of the S-VOL, and must be transferred to the remote site via the host failover software. 110 Continuous Access XP for the XP12000/XP10000...

  • Page 111: File And Database Recovery Procedures

    Sense information with local time-stamp transferred via host failover. NOTE: Remote copy and disaster recovery procedures are inherently complex. Consult your HP account team on sense-level settings and recovery procedures. Remember that the Continuous Access XP Async time-stamp and C/T information indicates MCU service processor (SVP) time, not host system time.

  • Page 112: Analyzing Currency Of Continuous Access Xp Synchronous S-Vols

    S-VOLs. Determine currency of these S-VOLs using the sense 112 Continuous Access XP for the XP12000/XP10000...

  • Page 113: Transferring Operations Back To Primary Sites

    (change target ports to initiator ports for fibre, change LCPs to RCPs for serial). This enables the original RCUs to send Continuous Access XP remote copy operations to the original MCUs to bring the original P-VOLs up to date. Continuous Access XP user guide for the XP12000/XP10000 113...

  • Page 114: Resuming Normal Operations At Primary Sites

    Remote Web Console when error conditions occur during Continuous Access XP operations. Error messages describe the error and can include an SVP error code. If you need to call HP technical support for assistance, report Continuous Access XP and SVP error codes.

  • Page 115: Pinned Track Recovery For Continuous Access Xp Volumes

    If the volume is offline (for example, S-VOL has a pinned track), vary the volume online. Perform your usual procedure for recovering data from a pinned track. See the pinned track recovery procedures for your operating system, or contact your HP account support representative for assistance in recovering the pinned track.
  • Page 116 116 Continuous Access XP for the XP12000/XP10000...

  • Page 117: Index

    Continuous Access XP Pairsplit-S options components parameters Display Filter pane performance impact document Point-in-Time copies conventions recordset operations prerequisites recordsets related documentation remote copy connections sidefile threshold values split types Continuous Access XP user guide for the XP12000/XP10000 117...
  • Page 118 defined disaster recovery error codes inflow control initial copy operations initiator ports failover, host Number tree fence level operations Fibre Channel ports pair split types components for planned outages configuring ports direct connection powering off/on distances supported read and write operations extender connection recordsets initiator...
  • Page 119 Continuous Access XP and BC SNMP trap split types split types update copy operation splitting with pairsplit-r command SSIDs, adding/deleting for RCUs starting Continuous Access XP RAID Manager statistics, Usage Monitor Continuous Access XP user guide for the XP12000/XP10000 119...
  • Page 120 HP documentation Subscriber’s choice, HP HP storage subsystem settings HP Subscriber’s choice suspend types Suspending status S-VOLs Change Pair Option command consistency status consistency, analyzing copying using Continuous Access XP Asynchronous copying using Continuous Access XP Synchronous...

This manual is also suitable for:

Xp10000

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