Hp XP Continuous Access Software Uživatelský manuál

HPXP24000/XP20000 Continuous AccessJournal Software User GuideAbstractThis guide explains how to use HP XP Continuous Access Journal Software to repli

◦ Reduces overhead and application impact at the production site by placing more of theworkload on the remote site◦ Centralizes operations for managem

Figure 46 Transferring Business Tasks from the XP Continuous Access Journal Secondary Site tothe Primary SiteXP Continuous Access Synchronous (2DC Con

Figure 47 2DC Configuration of XP Continuous Access Journal and XP Continuous AccessSynchronousIn the 2DC configuration shown above, the I/O data on t

Figure 48 Basic Behavior (2DC Configuration of XP Continuous Access Journal and XP ContinuousAccess Synchronous)The I/O data from the primary site hos

The XP24000/XP20000 Disk Array needs the following conditions in these sites:• Primary siteXP Continuous Access Synchronous program product◦◦ XP Conti

Restrictions About 2DCThis section explains important considerations to keep in mind when configuring a 2DC configurationby using XP Continuous Access

primary volume is in PAIR or COPY status, the XP Continuous Access Synchronous pairbecomes suspended by error.◦ To release an XP Continuous Access Jou

Figure 49 Transferring Business Tasks to the Recovered Primary Site (2DC Configuration)Data Retention UtilityYou can create an XP Continuous Access Jo

Table 24 The Access Attribute and Whether You Can Specify the Volume for the Continuous AccessJournal PairWhether You Can Specify the VolumeAccess Att

Performance MonitorThe Performance Monitor software product provides detailed information on the I/O activity andhardware performance of the storage s

Planning of Journal VolumesThis section explains what you need to consider when deciding on journal volume specifications.Data transfer speed for jour

2 About XP Continuous Access Journal OperationsThis chapter describes how XP Continuous Access Journal provides a storage-based, XP hardwaresolution f

of temporary increase in the data to be transferred, the journal data for the temporary increase inthe data to be transferred will not be stored in jo

Figure 51 Data Transfer Speed with XP Continuous Access Journal (Influence on Journal VolumeCapacity)The following factors determine the required jour

If you do not want to reverse the primary data volume and the secondary data volume, you willbe able to cope with a temporary increase in data transfe

Performing Remote Copy Between an XP12000/XP10000 Disk Array andan XP24000/XP20000 Disk ArrayXP Continuous Access Journal can be used to perform remot

Figure 53 Logical Path Between LDKC00 on the HP XP24000/XP20000 Disk Array and the HPXP12000/XP10000 Disk ArrayVolume that can Be Used to Create Pairs

For detailed information about the 3DC cascading configuration, see “XP Continuous AccessSynchronous (3DC Cascading Configuration)” (page 82). For det

4 Using the XP Continuous Access Journal GUIThis chapter describes how to use the XP Continuous Access Journal GUI:• “Journal Operation Window” (page

Table 27 Journal Operation Window Details (continued)DescriptionItemand does not display the journal groups used with UniversalReplicator for Mainfram

Table 27 Journal Operation Window Details (continued)DescriptionItemIf a master journal group or a restore journal group isselected in the tree, the J

Table 27 Journal Operation Window Details (continued)DescriptionItemHalt: An operation for splitting or deleting the mirror isin progress. The primary

Figure 1 XP Continuous Access Journal Operations for a Fibre Channel ConnectionJournal ObtainJournal obtain is the function that stores data from the

Table 27 Journal Operation Window Details (continued)DescriptionItem• Mirror ID: Identifies the mirror. This column is blank ifthe attribute of the jo

Table 27 Journal Operation Window Details (continued)DescriptionItem• Assign R-Cmd.Dev: Assign a remote command deviceto a mirror.• Release R-Cmd.Dev:

Figure 55 Pair Operation WindowFigure 56 Volume List in the Pair Operation WindowTable 28 Pair Operation Window DetailsDescriptionItemLists the ports

Table 28 Pair Operation Window Details (continued)DescriptionItemselect only one port or one host group at one time; youcannot select two or more simu

Table 28 Pair Operation Window Details (continued)DescriptionItem• VOL: Identifies the volumes in the local storage system.A device ID ending in # (fo

Table 28 Pair Operation Window Details (continued)DescriptionItemJournal sites, the status might remainSuspending to maintain the journal datafor perf

Table 28 Pair Operation Window Details (continued)DescriptionItem• JNLG-MirrorID: A journal group number and a mirrorID. The number on the left of the

Table 28 Pair Operation Window Details (continued)DescriptionIteminformation in the following ways:◦ If the volume pair is not split, this column show

Table 28 Pair Operation Window Details (continued)DescriptionItem• Sync: If the volume in the local storage system is aprimary data volume, this colum

Table 28 Pair Operation Window Details (continued)DescriptionItemThe Preview list shows changes that have been made inthe window. When you change sett

data volume according to the write sequence number. This will ensure write sequence consistencybetween the primary and secondary data volumes. After t

Figure 58 Information in the Paired VOL Column in the Pair Operation WindowInformation on the Pair Operation window updates when you do one of the fol

To open the DKC Operation window, do one of the following:• If XP Continuous Access Journal has not been started:Click Go, XP Continuous Access Journa

Table 29 DKC Operation Window Details (continued)DescriptionItemShows changes made in the window before the changesare applied to the storage systems.

DescriptionItemThe icon indicates the status of logical paths between thelocal storage system and the remote storage system:• All logical paths are in

The Operation list shows the following information:DescriptionItemThe path group ID. The icon indicates the status of the path:Path Gr. ID• The logica

The Operation list shows the following information:DescriptionItemThe channel adapters and ports on the local storage system.The following information

Figure 63 Usage Monitor WindowTable 30 Usage Monitor Window DetailsDescriptionItemMonitoring status:Monitoring Switch• Enable: Monitoring is on.• Disa

To open the History window, do one of the following:• If XP Continuous Access Journal has not been started:◦ Use your Web browser to open the storage

Table 31 History Window Details (continued)DescriptionItemautomatically continues until updating finishes. Theupdating process is checked at 10-second

Table 32 Operations Displayed in the History Window (continued)DescriptionsDisplaysCreation of the data volume pair was finished.Paircreate CompleteRe

Figure 3 Configuration for Multiple Secondary Storage SystemsStorage SystemsXP Continuous Access Journal operations involve the storage systems at the

Table 32 Operations Displayed in the History Window (continued)DescriptionsDisplaysAn operation for releasing a pair has been started at thesecondary

• If a data volume pair consists of LUSE volumes, the list only displays the top LDEV numbers ofthe LUSE volumes.• The copy time might not be shown in

Table 33 Optional Operation Window Details (continued)DescriptionItemIndicates the operation that will occur when you clickApply:Operation• Change Sys

5 Configuring Storage Systems and Logical PathsThis chapter describes how to set up XP Continuous Access Journal in your system and how toconfigure yo

• Display status of logical paths (see “Viewing the Status of Logical Paths” (page 152)).• Delete the relationship between the primary and the seconda

The port assigned to SLPR other than SLPR0 can be set to the target port attribute only.WARNINGS:• Before changing a Fibre Channel port to an initiato

3. Select Subsystem in the tree.The list shows storage system options (see Figure 66 (page 146)).4. Do one of the following:• Right-click Subsystem in

If the value of Maximum Initial Copy Activities is increased, the time for the initial copyprocessing is shortened. However, the host operation may be

10. In the DKC Option window, configure logical path options and storage system options. Fordetailed information about the options, see the next secti

TheAdd DKC window shows the following:• S/N: Enter the five-digit serial number of the remote storage system.• LDKC: Enter the LDKC number of the remo

system). This virtual storage system is called a logical DKC or an LDKC (logical disk controller).There is one LDKC in the storage system, and number

7. Click Set to close the DKC Option window.8. See the Preview list to check the settings that you have made.• To modify a setting, select and right-c

3. Ensure that the DKC Operation window is open (see “DKC Operation Window” (page 130)).4. In Display, select DKC.5. Do one of the following:• In the

The Add Path window shows the following:• Port: Select an initiator port on the local storage system.When specifying a port, you can use the keyboard

Figure 71 DKC Status WindowThe DKC Status window shows the following:• List:No.: Serial numbers used for rows in the list◦◦ Path Status: Status of a l

• Refresh: Refreshes the information in the DKC Status window.• Close: Closes the DKC Status window.Table 34 Logical Path StatusRemarksStatusThis path

3. In Display, select DKC.Do one of the following:• In the tree, select a remote storage system.• In the list, select and right-click a remote storage

If power is removed from the primary or secondary storage system and its backup batteries arefully discharged while data volume pairs are split, diffe

After you take these steps, remote copy operations resume. The secondary storage system canissue read journal commands to the primary storage system.I

Power On the Primary Storage SystemAn error may occur if you perform the operations on the XP Continuous Access Journal pairs, withinfive minutes, bec

6 Using Journal GroupsThis chapter describes how to set up XP Continuous Access Journal in your system and configureyour system for remote copy operat

The specifications for consistency group numbers are different from the specifications for journalgroup numbers. One storage system has a total of 256

in to the secondary storage system and are using XP Continuous Access Journal, the secondarystorage system is a local storage system and the primary s

7. Click Set to close the Edit JNL Volumes window.8. See the Preview list to check the settings that you have made.• To add volumes to register, selec

• Delete: Use this button to delete volumes from journal groups. Select the volumes from JNLVolumes, and then click Delete.• Free Volumes: Displays in

Figure 74 The Free Volumes List and the CU Button in the Edit JNL Volumes Window• JNL Group: The number of a journal group. A journal group number end

Table 35 Requirement to Delete Journal Volumes (When One Journal Group Uses Two MirrorIDs)Can the Journal Volumes be Deleted?Status of Journal GroupMi

Figure 75 JNL Group Detail WindowThe JNL Group Detail window shows the following:• JNL Group (LDKC): The number of a journal group and the LDKC number

• Data Capacity: The total capacity of all the data volumes. When one journal group usesmultiple mirror IDs, Data Capacity indicates the total capacit

◦ Emulation: The emulation type of a journal volume.◦ CLPR: The number and the name of the CLPR where the journal volume belongs.• Mirrors: If the rem

1. Ensure that the Remote Web Console main window is in Modify mode.For detailed information about how to do this, see the HP XP24000/XP20000 Remote W

Figure 76 Change JNL Option WindowThe Change JNL Option window shows the following:• Inflow Control: Specify whether to restrict inflow of update I/Os

The XP Continuous Access Journal remote copy configuration between the primary storage systemand secondary storage system has the following requiremen

• Copy Pace: Specify the pace (speed) for an initial copy activity for one volume. The default isLow.◦ Low: The speed of the initial copy activity is

This setting does not take effect on master journal groups. However, if the RAID Managerhorctakeover command is used to change a master journal group

5. See the Preview list to check the journal groups that you want to delete.• To cancel deleting a journal group, select and right-click the journal g

Figure 77 Pairsplit-r WindowThe Pairsplit-r window shows the following:• S-VOL Write: Specify whether hosts can issue read I/O and write I/O to the se

1. Ensure that the Remote Web Console main window is in Modify mode.For detailed information about how to do this, see the HP XP24000/XP20000 Remote W

3. Do one of the following:• In the tree, select a master journal group or a restore journal group under Registered.• In the tree, select Journal Grou

Figure 78 Assign Remote Command Device WindowThe Assign Remote Command Device window displays the following settings. Using the AssignRemote Command D

7 Performing XP Continuous Access Journal Pair OperationsThis chapter discusses using the Pair Operation window of XP Continuous Access Journal.• “Rev

Figure 79 Display Filter WindowThe Display Filter window shows the following:• GID: Select the group number of a host group to be displayed. If you se

• Set: Applies the settings in the Display Filter window to the list.• Cancel: Discards the settings and closes the window.Saving Pair Status Informat

Caution: Data volumes and journal volumes that belong to different LDKCs cannot coexist in ajournal group.For detailed information about the specifica

• 00 is the LDCK number when the volume is a volume of an XP12000/XP10000 Disk Arrayor USP/VM.• A journal group number for the local storage system en

7. In S-VOL, specify the secondary data volume.• Use the left most drop-down list to specify a port.• Use the drop-down list in the middle to specify

Figure 80 Paircreate Window182 Performing XP Continuous Access Journal Pair Operations

The Paircreate window shows the following:• P-VOL: A primary data volume. The numbers indicate the port number, the GID, and the LUNof the primary dat

• Mirror: Assigns a master journal group to the primary data volume, assigns a restore journalgroup to the secondary data volume, and also assigns a m

Displaying Detailed Information about a Pair of Data VolumesUse the Detailed Information window to view detailed information about a pair of data volu

The Detailed Information window shows the following:• Status: The status of the pair. If the pair is split (or suspended), Status also shows the suspe

◦ If the volume is a volume of an XP12000/XP10000 Disk Array, 00 appears for the LDKCnumber.◦ If there is no volume in the local storage system, the p

• Refresh the Pair Operation window after this window is closed: If this check box is selected,the Pair Operation window updates when the Detailed Inf

The Change Pair Option window provides the following items that can be configured:• Error Level: Specify the range used for splitting a pair when a fa

Table 2 Emulation Types for Journal VolumesSupported Emulation TypesEmulation CategoryOPEN-VDKU (drive)Note: You can only use OPEN-V volumes for journ

Figure 83 Pairsplit-r WindowThe Pairsplit-r window shows the following:• S-VOL Write: Specify whether to permit hosts to write data to the secondary d

• Set: Applies the settings to the Preview list in the Pair Operation window (“Pair OperationWindow” (page 122)).• Cancel: Discards the settings and c

Information window (see “Displaying Detailed Information about a Pair of Data Volumes”(page 185)) to monitor the detailed status of each pair.Figure 8

• Resync Mode: Indicates the processing after recovery of the pairs.Normal: Split pair whose status is PSUS or PSUE is recovered.◦◦ Delta: The delta r

To restore a pair that was released from the secondary storage system, first release the pair fromthe primary storage system, and then restore the pai

waiting for device-end from a primary storage system that cannot communicate with itsthe secondary storage system, thus allowing host operations to co

If a pinned track occurs on an XP Continuous Access Journal secondary data volume that is in the2DC configuration (that is, XP Continuous Access Journ

8 Usage Monitor OperationsThis chapter describes using the Usage Monitor window to follow the collection and display ofperformance monitoring statisti

3. In the Display Item window (see “Display Item Window” (page 199)), select an appropriateoption in Select Volume:• To view I/O statistics for all LD

Figure 86 Display Item WindowTable 36 Remote Copy I/O StatisticsDescriptionStatisticHost I/OThe number of write I/Os per second.Write Record CountThe

© Copyright 2007, 2011 Hewlett-Packard Development Company, L.P.Confidential computer software. Valid license from HP required for possession, use or

Adding journal volumes during a remote copy operation may not change the journal datausage rate until the journal volumes are used. To check the journ

Table 36 Remote Copy I/O Statistics (continued)DescriptionStatisticThe number of journals at the primary storage system.M-JNL Total Number of JournalT

Table 38 I/O Stats in Asynchronous Copy and R-JNL When Journal Group Attribute isMaster/Restore.DescriptionStatisticAsynchronous CopyThe number of asy

(1) Date and time when the operation finished(2) Time taken for copying (from the start to the end of copying). This is displayed only when the operat

9 Performing Disaster Recovery OperationsThis chapter describes how to determine the best approach for disaster recovery. The user shouldanticipate an

XP Continuous Access Journal pairs enables your business tasks to be taken over to the secondarysite, using secondary data volumes in the secondary si

Resuming Normal Operations at the Primary SiteOnce the XP Continuous Access Journal volume pairs have been established in the reverse direction,you ar

(page 207), or if the primary/secondary relationship of the XP Continuous Access Journal pairis reversed (when the copy direction is reversed as illus

Figure 87 Recovery from Failure in the Primary Site (When Delta Resync Operation is Performed)Recovering from Primary Site Failures in XP Continuous A

Figure 88 Transferring Operations to the Intermediate Site from the Primary Site in the Case ofFailureFor detailed information about how to use RAID M

Figure 89 Transferring Operations to the Primary Site in the Case of Failure in the Intermediate SiteRecovering from a Failure by Duplicating Volumes

XP Continuous Access Journal Remote Copy OperationsThis section describes the remote copy operations using XP Continuous Access Journal.Figure 5 (page

1. Check the consistency of the XP Continuous Access Synchronous S-VOL in the intermediatesite.2. Use RAID Manager to execute the horctakeover command

Notes:• If you followed step a above, remove failures in the primary site and other locations,change the system to a 3DC multi-target configuration (s

3. Check the execution result of the horctakeover command.4. When the primary/secondary relationship of the XP Continuous Access Synchronous pair isno

Figure 91 Recovery from a Disaster in the Primary Site (When Delta Resync Operation Is Performed)Recovering from a Disaster in a 2DC Configuration of

4. Confirm that the XP Continuous Access Journal S-VOL has changed to SMPL status.5. When the XP Continuous Access Journal S-VOL status changes to SMP

Recovering the Primary Site from a Failure When the System Consists ofMultiple Primary and Secondary Storage SystemsIf a disaster or a failure occurs

10 TroubleshootingThis chapter describes general troubleshooting errors and corrective actions:• “General Troubleshooting” (page 216)• “Checking XP Co

Table 41 General Troubleshooting Information for XP Continuous Access Journal (continued)Corrective ActionErrorCheck the pair status in the Detailed I

Table 42 Troubleshooting Problems with the Status of Logical Paths (continued)Corrective ActionDescriptionPath StatusIf necessary, connect to the remo

Table 42 Troubleshooting Problems with the Status of Logical Paths (continued)Corrective ActionDescriptionPath StatusDelete DKC command, and then add

The base-journal data is stored in the entire data volume or the area for the difference. The journaldata for the entire data volume is created when t

Table 43 Troubleshooting Suspended XP Continuous Access Journal Pairs (continued)Corrective ActionDescriptionApplies ToSuspendTypestorage system perfo

Table 44 Resolving XP Continuous Access Journal Pair Suspension (continued)Recovery ProcedureSIMCauses of SuspensionClassificationsystems, the parity

Find the error code from the logs displayed on the RAID Manager window.Figure 93 (page 222) shows an example of a log displayed on the RAID Manager wi

Table 45 Error Codes and Error Contents When Operating RAID Manager (continued)Error ContentsError Code(SSB2)Error Code(SSB1)The XP Continuous Access

Table 45 Error Codes and Error Contents When Operating RAID Manager (continued)Error ContentsError Code(SSB2)Error Code(SSB1)In the configuration wher

Table 45 Error Codes and Error Contents When Operating RAID Manager (continued)Error ContentsError Code(SSB2)Error Code(SSB1)Paircreate or Pairresync

Table 45 Error Codes and Error Contents When Operating RAID Manager (continued)Error ContentsError Code(SSB2)Error Code(SSB1)A request of XP Continuou

Table 45 Error Codes and Error Contents When Operating RAID Manager (continued)Error ContentsError Code(SSB2)Error Code(SSB1)A request of XP Continuou

Table 45 Error Codes and Error Contents When Operating RAID Manager (continued)Error ContentsError Code(SSB2)Error Code(SSB1)SMPL when the Paircreate

Table 45 Error Codes and Error Contents When Operating RAID Manager (continued)Error ContentsError Code(SSB2)Error Code(SSB1)A request of XP Continuou

is written to the primary data volume is obtained as an update journal. The update journal is copiedto the secondary storage system, and then restored

Table 45 Error Codes and Error Contents When Operating RAID Manager (continued)Error ContentsError Code(SSB2)Error Code(SSB1)A request of XP Continuou

Table 45 Error Codes and Error Contents When Operating RAID Manager (continued)Error ContentsError Code(SSB2)Error Code(SSB1)A request of XP Continuou

Table 45 Error Codes and Error Contents When Operating RAID Manager (continued)Error ContentsError Code(SSB2)Error Code(SSB1)A request of XP Continuou

Table 45 Error Codes and Error Contents When Operating RAID Manager (continued)Error ContentsError Code(SSB2)Error Code(SSB1)Continuous Access Asynchr

Table 45 Error Codes and Error Contents When Operating RAID Manager (continued)Error ContentsError Code(SSB2)Error Code(SSB1)A request to configure th

Table 45 Error Codes and Error Contents When Operating RAID Manager (continued)Error ContentsError Code(SSB2)Error Code(SSB1)A request of XP Continuou

Table 45 Error Codes and Error Contents When Operating RAID Manager (continued)Error ContentsError Code(SSB2)Error Code(SSB1)The XP Continuous Access

Table 45 Error Codes and Error Contents When Operating RAID Manager (continued)Error ContentsError Code(SSB2)Error Code(SSB1)A request for XP Continuo

Table 45 Error Codes and Error Contents When Operating RAID Manager (continued)Error ContentsError Code(SSB2)Error Code(SSB1)A request of XP Continuou

Table 46 Typical SIMs Showing the Reference Code and SIM TypeSVP Log FileSIM GeneratedByDescriptionSeverityReference CodeByte 23Byte 22SIM LogPrimary/

primary storage system does not read the XP Continuous Access Journal secondary data volumefor a recovery.Write and Update Copy / Write FailureWhen a

Calling HP Technical SupportIf you need to call HP technical support, make sure to provide as much information about theproblem as possible, including

11 Support and Other ResourcesRelated Documentation• HP RAID Manager User Guide• HP XP24000/XP20000 Data Retention Utility User Guide• HP XP24000/XP20

HP Technical SupportFor worldwide technical support information, see the HP support website:http://www.hp.com/supportBefore contacting HP, collect the

GlossaryCCU Control unit.DDC Data center. Configurations can be either 2DC (two data centers) or 3DC (one primary and twosecondary data centers).DKC D

SIM Service information message.SMPL Simplex.SSID Subsystem identifier; storage system identifier.SVP Service processor. A computer built into a disk

IndexCcomponents, 13control units (CUs), 15conventionsstorage capacity values, 241Ddatabase recovery, 203disaster recovery, 203preparing for, 203docum

Difference ManagementThe differential data (updated by write I/Os during a split or suspension) between the primarydata volume and the secondary data

secondary data volume in the same order as the primary data volume, according to the sequencenumber information in the journal.Note: XP Continuous Acc

When journal data S2 arrives, the secondary storage system selects S2 as the next journal datato be settled. The journal data selected by the secondar

by the delta resync operation; you need not wait long before you can again access the XPContinuous Access Journal data volumes.A delta resync operatio

Figure 7 Delta Resync Setting 3DC Multi-Target Configuration - Before Failure OccursAs shown in Figure 7 (page 29), an XP Continuous Access Journal pa

Contents1 Overview of HP XP Continuous Access Journal Software...8XP Continuous Access Journal...

obtained in the XP Continuous Access Synchronous secondary site because of the failure in themaster journal volume or occurrence of the pinned track.

Figure 8 Delta Resync Setting 3DC Multi-Target Configuration - After Failure OccursFor the latest information on the availability of the delta resync

In the delta resync operation, the status of the XP Continuous Access Journal pair changes to PAIR(not COPY). This is because the delta resync operati

You can view the detailed pair status information at the Remote Web Console computer (XPContinuous Access Journal Detailed Information window) or at t

When an XP Continuous Access Journal data volume pair is split or suspended, the primary storagesystem generates a service information message (SIM) t

Table 5 XP Continuous Access Journal Data Volume Pair Status (continued)Secondary DataVolume AccessPrimary DataVolume AccessDescriptionPair StatusRead

Table 5 XP Continuous Access Journal Data Volume Pair Status (continued)Secondary DataVolume AccessPrimary DataVolume AccessDescriptionPair Statusstat

Table 5 XP Continuous Access Journal Data Volume Pair Status (continued)Secondary DataVolume AccessPrimary DataVolume AccessDescriptionPair StatusRead

*4: HOLDING indicates that the differential data to be used for a delta resync operation eitherdoes not exist in the storage system, or either the sto

Resume Pair – Synchronization: When the pair is resumed (pairresync), the secondary storagesystem sends the secondary data volume track bitmap to the

3 Preparing for XP Continuous Access Journal Operations...43Requirements and Restrictions...

Table 7 Consistency Status for Split/Suspended XP Continuous Access Journal SecondaryData Volumes (continued)DescriptionConsistency Status (shownat se

Table 8 Suspend Types (PSUE) (continued)DescriptionApplies toTypeIn this case, the secondary data volume suspend type is usuallyPSUE-S-VOL Failure.The

Table 9 XP Continuous Access Journal Suspension ConditionXP Continuous Access Journal Pairs tobe SuspendedDetected bySuspension ConditionAll XP Contin

3 Preparing for XP Continuous Access Journal OperationsThis chapter describes the prerequisites and preparations to make to begin operations:• “Requir

and remote sites, and the licensed XP Continuous Access Journal remote console software. The XPContinuous Access Journal system requirements are:• Pri

When running the 3DC system. In addition, you also need a license for Disaster RecoveryExtended in the following cases:◦ When performing the remote co

Table 11 (page 46) lists the volumes and the volume capacity that can be used for the XP ContinuousAccess Journal data volume and journal volume. Reme

Table 14 RAID Level Configuration of XP Continuous Access JournalSupport SpecificationsItemRAID1, RAID5, and RAID6 can coexist.RAID configuration of t

Table 15 Relationship Between Additional Shared Memory and Total Number of Bitmap Areasin the Storage SystemTotal Number of Bitmap Areas in theStorage

Table 16 Journal Group Specifications (continued)Support SpecificationsItemdepends on the number of data volumes that can be registeredto a journal gr

Requirements for Creating an XP Continuous Access Journal Pair for the Delta ResyncOperation...

about the case when the system option mode 707 is set to ON, see “XP Continuous AccessSynchronous (2DC Configuration)” (page 100).If the system option

volumes and asked which volume should be left offline. This can be confusing and prone toerror.• If the XP Continuous Access Journal secondary data vo

Setting up Remote Copy ConnectionsFigure 9 (page 52) shows the remote copy connection configurations for XP Continuous AccessJournal operations. The p

Figure 10 Direct Remote Copy Connections* To set ports, use LUN Manager and set the port topology to Fabric off, FC-AL.Figure 11 Switch Remote Copy Co

1. Identify the volumes that will become the XP Continuous Access Journal data volumes andjournal volumes in the primary storage system and secondary

Using Multiple Primary and Secondary Storage SystemsSystem configuration of up to four primary storage systems and up to four secondary storagesystems

Figure 14 Example 1: When the Consistency Group Contains Multiple Journal GroupsFigure 15 Example 2: When the Consistency Group Contains Multiple Jour

Figure 16 Example 3: When the Consistency Group Contains Multiple Journal GroupsBasic Behavior When Using Multiple Primary and Secondary Storage Syste

this point, two kinds of information, the time stamp information issued from RAID Managerand the sequence number indicating the write order, are added

If the above-mentioned conditions are all fulfilled, and when an error occurs to one of the journalgroups, the error will be communicated to other jou

Adding Logical Paths...150Viewing the Status

Figure 18 Flow of Transferring the Business Tasks from the Remote to Primary Site When the SystemConsists of Multiple Primary and Secondary Storage Sy

Access Journal secondary sites are combined, you can create a XP Continuous Access Journal pairfor delta resync operation. If you create a XP Continuo

6. Create an XP Continuous Access Journal pair of the second mirror in the primary site. Specifythe primary journal group and the primary data volume

• When the primary data volume of the XP Continuous Access Journal pair of the first mirror isin COPY status, the pair of the second mirror cannot be

requirements. In the following cases, delta resync operation will not be performed becausethe necessary journal data does not exist when:◦ After split

4. Execute the delta resync command (pairresync –swaps) on the XP Continuous AccessJournal pair for delta resync operation in the primary site. The st

3DC cascading configuration where three XP Continuous Access Journal sites are combined. Inthis configuration, there are three sites:• An XP Continuou

as the primary journal group and the primary data volume of the XP Continuous Access Journalpair. Select any mirror ID from 0 to 3 except the one used

Notes on performing Delta Resync OperationsBefore performing delta resync operations, specify an XP Continuous Access Journal pair belongingto the jou

delta resync operation will not be performed because the necessary journal data does not existwhen:• After splitting the XP Continuous Access Journal

Transferring Operations Back to the Primary Site...204Resuming Normal Operations at the

5. Resynchronize the XP Continuous Access Journal pair between the intermediate site and thesecondary site.Figure 22 Configuration when Transferring B

Figure 23 Configuration when Restoring the XP Continuous Access Journal Intermediate Site andthe Cascading ConfigurationEnabling the XP Continuous Acc

Table 19 Whether Non-XP Continuous Access Journal Volumes Can Be Used as XP ContinuousAccess Journal VolumesCan the Volumes BeUsed as JournalVolumes?C

Table 19 Whether Non-XP Continuous Access Journal Volumes Can Be Used as XPContinuous Access Journal Volumes (continued)Can the Volumes BeUsed as Jour

Table 19 Whether Non-XP Continuous Access Journal Volumes Can Be Used as XPContinuous Access Journal Volumes (continued)Can the Volumes BeUsed as Jour

Table 19 Whether Non-XP Continuous Access Journal Volumes Can Be Used as XPContinuous Access Journal Volumes (continued)Can the Volumes BeUsed as Jour

Journal primary data volume or secondary data volume, you must delete the pair first to return thevolume to SMPL status.When creating an XP Continuous

Table 20 (page 77) describes the host pair status reporting for XP Continuous Access Journalvolumes, XP Business Copy volumes, and XP Continuous Acces

Figure 24 Shared XP Continuous Access Journal Primary Data Volume and XP Business CopyP-VOL• XP Continuous Access Journal/XP Business Copy configurati

Figure 26 Shared XP Continuous Access Journal Primary Data Volume and XP Business CopyP-VOL, and XP Continuous Access Journal Secondary Data Volume an

1 Overview of HP XP Continuous Access Journal SoftwareThis chapter provides an overview of HP XP Continuous Access Journal Software and describes itsf

8. Execute the RAID Manager pairsplit -r command on the XP Business Copy pair to putthe pair in PSUS status (see Figure 35 (page 81)).9. Execute the R

Figure 32 Restoring an XP Business Copy P-VOL - Step 5Figure 33 Restoring an XP Business Copy P-VOL - Step 6Figure 34 Restoring an XP Business Copy P-

Figure 36 Restoring an XP Business Copy P-VOL - Step 9XP Continuous Access Synchronous (3DC Cascading Configuration)The XP24000/20000 Disk Array provi

Note that the 3DC cascading configuration of XP Continuous Access Journal and XP ContinuousAccess Synchronous is not available in the system that cons

Figure 38 Basic Behavior in a 3DC Cascading ConfigurationUse differential copy, in a 3DC cascading configuration, to resynchronize either a suspended

1. Install XP Continuous Access Synchronous and XP Continuous Access Journal. Configure theports and journal groups.2. Issue a request for creating an

Figure 39 3DC Multi-Target Configuration (Combining XP Continuous Access Journal with XPContinuous Access Synchronous)In this configuration, the prima

Multi-Target Configuration” (page 210) and “Changing to a 3DC Multi-Target Configuration AfterRecovering from Primary Site Failures” (page 93).If a fa

Access Journal pair for the delta resync operation. For details, see “Recovering fromPrimary Site Disaster in a 3DC Multi-Target Configuration” (page

If you release the XP Continuous Access Synchronous pair created in step 2, the XP ContinuousAccess Journal pair created in step 6 will be released as

FeaturesXP Continuous Access Journal provides the following key features:• Heterogeneous Storage System SupportUsed with the storage system, XP Contin

NOTE: Just after creating the XP Continuous Access Journal pair for delta resync operation(or if the failure occurred at the primary site right after

• When, after creating the XP Continuous Access Journal pair for the delta resync operation,no volumes (including volumes after failover or failback)

Figure 40 Configuration of the Delta Resync Operation that utilizes Remote Command DevicesTo create above configuration, perform following operations:

If the Continuous Access Synchronous pair, the Continuous Access Journal pair, and the ContinuousAccess Journal pair for delta resync operation are al

Figure 42 Transferring Business Tasks from the XP Continuous Access Secondary Site to the PrimarySite (in a 3DC Cascading Configuration)Transferring B

Figure 43 Transferring Business Tasks from the XP Continuous Access Secondary Site to the PrimarySite (in a 3DC Multi-target Configuration)Transferrin

Table 22 XP Continuous Access Journal Pair Status Changes by Delta Resync OperationPair Status after Delta Resync OperationPair Status before Delta Re

Table 23 Pair Status and Operation after Recovery of the Primary SitePerform This Operation before Transferring BusinessTasks Back to the Primary Site

Figure 44 Transferring Business Tasks from the XP Continuous Access Secondary Site to the PrimarySite (When Delta Resync Operation Is Performed in 3DC

Figure 45 Recovering from Failures at the Primary Site and the XP Continuous Access SynchronousSecondary SiteTransferring Business Tasks from the XP C