Hp XP Continuous Access Software Uživatelský manuál Strana 1

HP StorageWorksContinuous Access XP Journal user guidefor the XP12000/XP10000/SVS200Part number: T1778-96005Sixth edition: September 2007

77..TypicalSIMshowingreferencecodeandSIMtype ... 22710

If Continuous Access XP Journal has not been started1. UseyourWebbrowsertodisplaythestoragedevicelist.Inthestoragedevicelist,selectthearraytolog into.

• Detailed information about remote arrays (see Displaying information about remote arrays)• Detailed information about logical paths (see Displaying

NOTE:Inthecurrentversion,thepathgroupIDissettothedefaultvalue.• M-R Path: Channel type of the logical path between the local and remote arrays. This c

Figure 42 DKC Operation pane, Port option• Tree:Lists channel adapters and ports on the local array.Channel adapter (Fibre Channel interface)Target po

• Target: A target port is a Fibre Channel port used to connect an array and a host. When the hostissues a write request, the request is sent to a vol

2. Display the DKC Operation pane (see Displaying the DKC Operation pane).3. In the Switch Display box, select Port. The tree displays channel adapter

•Remotearray'sserialnumber.•Remotearray'scontrollerID.NOTE:The controller ID for an XP12000/XP10000 is 4.• Path group ID. The path group ID

Figure 43 Add DKC pane• DKC S/N:Remotearray'sfive-digit serial number.• Controller ID: Remote array's controller ID (that is, array family ID

Changing options for logical paths and arraysUse the DKC Option pane to set logical path and array options. These options apply to the local array.NOT

an error occurs, the local array suspends all affected Continuous Access XP Journal (and UniversalReplicator for z/OS) pairs to prevent remote copy op

Tables1..Documentconventions ... 142..Emulationtypesforjournalvolumes... 243..Metadata information ...

NOTE:If an error occurs, the right-most column of the Preset list displays the error code. To viewdetailed information about the error, right-click th

1. Ensure that Command View XP or XP Remote Web Console is in Modify mode. For more information,see the HP StorageWorks Command View XP user guide for

Figure 46 Logical paths list and Preset list (delete path operations)Viewing the status of logical pathsThe DKC Status pane displays the status of log

Figure 47 DKC Status pane• List:• No.:Serialnumbersusedforrowsinthelist.• Path Status: Logical path status (see Table 28).• Port:Portonthelocalarray.•

Table 28 Logical path statusStatusRemarksNormalThis path was successfully established and can be used for ContinuousAccess XP Journal remote copy acti

9. In the Preset list, check the settings you made.•ThePreset list displays the specified remote arrays. One row indicates one remote array.• To cancel

116Configuring arrays and logical paths

5 Using journal groupsTo introduce Continuous Access XP Journal in your system and configure your system for remote copyoperations, the primary and sec

If Continuous Access XP Journal has already been started• Select the Journal Operation tab. The Journal Operation pane appears.Journal Operation pane

NOTE:The tree displays journal groups used with Continuous Access XP Journal, and does not displayjournal groups used with Universal Replicator for z/

38..Config. def. file settings (HORCM_MON, HORCM_CMD) & specif. vals. in NAS Blade sys. 19239..Example 1: RAID Manager XP configuration definition file

One row in this list represents one mirror (or one journal group).• JNLG: Number of a journal group in the local array.• Attribute: Attribute of a jou

InitialJournal group in initial status.Journal volumes are registered in this journal group, but no data volumes(primary or data secondary volumes) ar

• Path Gr. ID: Path group IDs, which are used to identify path groups (that is, groups of logicalpaths). Up to eight logical paths can be registered i

To register journal volumes, the primary and secondary array administrators must perform the followingprocedure:1. Ensure that Command View XP or XP R

7. Click Set to close the Edit JNL Volumes pane.8. In the Preset list, check the settings you made.• To add volumes to register, right-click a volume

• Emulation: Journal volume's emulation type.• CLPR: Number and name of the CLPR where the journal volume belongs.• Operation: Displays one of th

• CU: Displays volumes belonging to a CU.If selected, select a CU from the list to the right. The Free Volumes list displays volumes in theselected CU

Table 29 Requirement to delete journal volumes (when one journal groupuses two mirror IDs)Status of journal groupCanjournalvolumesbedeleted?MirrorID1

Figure 53 JNL Group Detail pane• JNL Group: Journal group's number.• Attribute: Journal group's attribute. When the journal group uses multi

NOTE:Inflow Control displays nothing if the journal group is a restore journal group.• Data Overflow Watch (sec): Time (in seconds) for monitoring wheth

About this guideThis guide provides information about:• HP StorageWorks Continuous Access XP Journal on HP StorageWorks XP12000 Disk Arrays• HP Storag

• CU:LDEV: Journal volume's CU and LDEV number. The CU number appears to the left of thecolon (:). The LDEV number appears to the right of the co

Initial Journal group in initial status.Journal volumes are registered in this journal group, but no data volumes (primaryor secondary data volumes) a

• Path Watch Time (min): Time for monitoring blockade of paths to the remote array. If thestatus of a mirror where secondary data volumes in the local

• To modify a setting, right-click the setting in the Preset list, and select Modify.• To cancel a setting, right-click the setting, and select Cancel

• Data OverflowWatch(0to600sec): Time (in seconds) for monitoring whether metadata andjournal data are full. This value must be within the range of 0 t

CAUTION:If you want to downgrade the DKCMAIN microprogram version to lower than 50-09-00-00/00, youmustsetthePathWatchTimewithintherangeof1to59minutes

• Use: Journal data is stored in cache.NOTE:When there is insufficient space in cache, journal data is also stored in the journal volume.• Not Use: Jou

5. In the Preset list, check the journal groups you want to delete.• To cancel deleting a journal group, right-click the journal group, and select Can

Figure 55 Pairsplit-r pane• S-VOL Write:Specifies whether hosts can issue read and write I/Os to the secondary datavolume after the mirror is split.• E

5. From the mirrors, select and right-click the mirrors you want to restore. The result of this operationdiffers according to the status of the select

Document conventions and symbolsTable 1 Document conventionsConventionElementBlue text: Table 1Cross-reference links and e-mail addressesBlue, underli

• If necessary, repeat step 3 through step 7 to specify other mirrors.NOTE:The Range column indicates the unit used for splitting the mirror, and alwa

6 Performing Continuous Access XPJournal pair operationsTo perform remote copy operations with Continuous Access XP Journal, you must create pairs of

Figure 56 Pair Operation pane• Tree: Lists ports in the local array (). Host groups or iSCSI targets appear below each port. Ifyou select a port, host

To the right of the icon appears information about an LU path, which is a path from hosts to thelogical volume.Figure 57 Information in Port-G-ID-LUN

NOTE:The controller ID for an XP12000/XP10000 is 4.NOTE:ThiscolumncanbeblankwhilethepairisintransitiontotheSMPLstatus.Todisplaythelatestinformationint

• If the volume pair is split and, therefore, is in PSUS or PSUE status, this column usuallydisplays the synchronization rate (that is, concordance ra

NOTE:InformationonthePairOperationpaneisupdatedwhenyoudooneofthefollowing:• Select another tab, and reselect the Pair Operation tab.• Click Refresh ()

• G-ID: Group number of the host group or iSCSI target to display. To display all host groupsand iSCSI targets, select ALL.• JNL Group: Journal group

1Port in the local array2Group number andname of the host group or iSCSI target in the local array (host group name islimited to a maximum of 16 chara

After all these points are confirmed, the administrator of the primary array can use the followingprocedure to create a pair of a primary and secondary

• Technical support registration number (if applicable)• Product serial numbers• Error messages• Operating system type and revision level• Detailed qu

12. Click Set to close the Paircreate pane.13. In the Preset list on the Pair Operation pane, check the settings you made.• To modify a setting, right

NOTE:• P-VOL displays only one primary data volume even when two or more primary data volumesare selected in the Pair Operation pane. P-VOL only displ

NOTE:If you select and right-click more than one volume in the Preset list and select Modify,thePaircreate pane appears, and the Select Other S-VOL(s)

NOTE:If a timeout error occurs during the Paircreate operation, the copy operation might not executecorrectly in the order you set with the Priority p

Figure 61Pairdisplay pane• Status: Status of the pair. If the pair is split (or suspended), the column also displays the suspendtype. If the pair is w

The first line displays the primary data volume's port number, G-ID, and LUN. The G-ID is the groupnumber of a host group or iSCSI target. If the

• Other Information: Displays the following:• Established Time: Date and time the volume pair was created.• Updated Time: Date and time the volume pai

NOTE:If an error occurs, the right-most column of the Preset list displays the error code. To viewdetailed information about the error, right-click th

10. In the list on the Pair Operations pane, verify that the pair was split successfully. If the pair wassplit, the pair status is PSUS.NOTE:To restor

When the secondary array receives a request for splitting a pair, all journal data (that is, updatedata) that the pair retains is written to the secon

16About this guide

NOTE:If an error occurs, the right-most column of the Preset list displays the error code. To viewdetailed information about the error, right-click th

• Normal: A split pair whose status is PSUS or PSUE is recovered.• Delta: A delta resync operation is performed. For information, see Requirements for

To monitor the progress of deleting pairs, click Refresh to update the information in the list, or use thePairdisplay pane (see Displaying detailed in

NOTE:If the following conditions are satisfied and you click Apply, a warning message appears andprocessing cannot continue:•ThePreset list contains tw

16 4Performing Continuous Access XP Journal pair operations

7 Monitoring remote copyoperationsUse the Usage Monitor pane to monitor remote copy usage for the connected local array. The usagemonitoring function

Figure 66 Usage Monitor pane• MonitoringSwitch:Usagemonitoroperation(seeStarting and stopping usage monitoring).• Enable: Monitoring is on.• Disable:

NOTE:If you set 1 minute for Gathering Interval, the sampling data is held one day. If you set15 minu te s for Gathering Interval, the sampling data i

NOTE:If you specify the unmounted LU, the graph is not displayed.NOTE:When a graph displays, the CU and LDEV numbers appear above the graph. If the lo

Figure 67 Display Item paneTable 31 Remote copy I/O statisticsStatistic DescriptionRead Record CountNumber of read I/Os per second.Read HitRecord Coun

1OverviewofHPcopysolutionsContinuous Access XP JournalYou can use HP StorageWorks Continuous Access XP Journal to create and maintain duplicate copies

Statistic DescriptionM-JNL Asynchronous RIOcountNumber of asynchronous remote I/Os per secondat the primary array.M-JNL Total Number ofJournalNumber o

8Viewinghistoryofdatavolumepair operationsUse the History Operation pane (Figure 68) to view a history of operations for data volume pairs. Forexample

History Operation pane componentsFigure 68 History Operation pane• Status: Current status of operation history.• No history file exists.: Operation his

• VOL: Volume manipulated during the operation. This volume is located in the local array.Thenumbertotheleftofthecolon(:) is the CU number. The number

NOTE:• History information (that is, rows in the list) might not appear in chronological descending order.To sort the information in descending (or as

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

176Viewing history of data volume pair operations

9 Performing optional operationsUse the Optional Operations pane to perform the following procedures:• Displaying the Optional Operation pane• Changin

Figure 69 Optional Operation pane• Tree: Select Subsystem.• List: Displays array option settings (see Changing array options).• Preset: When changing

4. Do one of the following:•Right-clickSubsystem in the tree, and select Change System Option.• Right-click information in the list, and select Change

data at primary and/or secondary sites and provide maximum flexibility in data backup and duplicationactivities. See Combining Continuous Access XP Jou

Figure72ArrayoptionsettingsintheOptionalOperationpane• Max Initial Copy: Number of volumes that can be copied concurrently during an initial copyopera

10 Disaster recovery operationsPreparing for disaster recoveryThe type of disaster and the status of the Continuous Access XP Journal volume pairs det

secondary data volumes and splits journal groups that will become a Continuous Access XP Journal pair.This ensures consistency of secondary data volum

Access XP Journal terminology is now reversed: the original primary data volumes are now secondarydata volumes, and the original secondary data volume

184Disaster recovery operations

11 Continuous Access XP Journaloperations with NAS BladeThis chapter describes how to use Continuous Access XP Journal with the TagmaStore USP NAS Bla

Figure 73 Using Continuous Access XP Journal in NAS Blade systemsScope of Continuous Access XP Journal functions with NASBladeScope related to Continu

Scope related to RAID Manager XP• Relationships of failover and failback on RAID Manager XP and NAS Blade systemRAID Manager XP is not subject to fail

You should not operate Business Copy XP settings by the Snapshot feature using RAID ManagerXP commands. You should also not operate Business Copy XP s

• NAS Sync Image (Required when copying the file system managed by NAS Sync Imageusing Continuous Access XP Journal)Notes on operations• UID for user r

2 Overview of Continuous AccessXP JournalContinuous Access XP Journal provides a RAID storage-based hardware solution for disaster recovery thatenable

Whenthehostnameisspecified in the RAID Manager XP configuration definition file and you changethe following system configurations, you must change the confi

you must prepare a total of four RAID Manager XP configuration files, assuming one instance per NASpackage. For two instances, you need a total of eight

To create the correct RAID Manager XP configuration definition file, HP recommends creating a file systemto be temporarily paired before executing the mkc

NOTE:You can specify the host name instead of the fixed IP address if the fixed IP address and the correspondinghost name are registered in /etc/hosts,a

Table 40 Command execution that lists LUs constituting the file system sample$ sudo horc_devlist | grep ':sample$'11( 17) 64 OPEN-V(3.906GB)

NOTE:You can specify the host name instead of the fixed IP address if the fixed IP address and the correspondinghost name are registered in /etc/hosts,a

You can check the device file and LDEV numbers for device files constituting a fi le system by issuing thehorc_devlist command in the NAS package in whic

backing up the file system copied from the Continuous Access XP Journal P-VOL to S-VOL periodicallyusing Business Copy XP.Figure 75 shows an example of

Table 50 Example of RAID Manager XP configuration definition file at primary site(instance 16)HORCM_MON#ip_address service poll(10ms) timeout(10ms)123.45

Table 51 Example of RAID Manager XP configuration definition file at secondary site(instance 16)HORCM_MON#ip_address service poll(10ms) timeout(10ms)123.

Legal and notice information© Copyright 1999, 2007 Hewlett-Packard Development Company, L.P.Confidential computer software. Valid license from HP requi

Figure 1 Continuous Access XP Journal components for Fibre Channel connectionsJournal obtainThis function stores pre-existing primary volume data cont

Table 52 Example of RAID Manager XP configuration definition file at secondary site(instance 17)HORCM_MON#ip_address service poll(10ms) timeout(10ms)123.

ssh {-1|-2} nasroot@fixed-IP-address-of-the-NAS-packageEnter the command shown in the following example to check the result of setting up the environme

Figure 76 Overview of remote copy operationsStarting CA XP Journal ops. and creating CA XP Journal pairsIf the Continuous Access XP Journal S-VOL cont

Splitting Continuous Access XP Journal volume pairsWhen splittinga Continuous Access XP Journal volume pair, you can choose either offline or onlinebac

NOTE:When the S-VOL is the file system managed by NAS/Sync Image, mount thedifferential-data snapshots using the syncmount command, and create the CIFS

Resynchronizing Continuous Access XP Journal volume pairsYou must delete the target file system using the enas_fsdelete command before resynchronizing

NOTE:If you start the split pair operation with offline backup, but have not yet connected the target file system tothe NAS package at the secondary sit

•Non-LVM:?sudo horc_svol_delete -d Device-file-number•LVM:?sudo horc_svol_vmdelete -d Device-file-number,...4. At the primary and secondary sites, stop

ssh {-1|-2} nasroot@fixed-IP-address-of-the-NAS-package4. At the primary and secondary sites, start RAID Manager XP.sudo horcmstart.sh (1-instance confi

•Non-LVM:sudo horc_svol_define -d Device file number•LVM:sudo horc_svol_vmdefine -d Device file number, ...16. At the primary site, enter the following co

ComponentsContinuous Access XP Journal operations involve local arrays at the primary and secondary sites, physicalcommunications paths between these

Table 53 Format of RAID Manager XP log filesintheNASBladesystemLog fileclassificationLog fi le name Log file formatRAID ManagerXP starting log/home/nasroot

NOTE:If you read RAID Manager XP log files using Windows, you must ensure that the text viewer you areusing can display text containing the line feed c

If the S-VOL is not connected to the NAS package, release the device file used in the target filesystem using the horc_svol_delete (non-LVM) or horc_svo

12 TroubleshootingGeneral troubleshootingYou are responsible for the operation and normal maintenance of the Command View XP managementstation. For tr

Table 54 General troubleshooting information for Continuous Access XP JournalErrorCorrective actionThe Command View XP managementstation hangs,or Cont

Table 55 Troubleshooting problems with status of logical pathsPair status Description Corrective actionInitialization FailedLink initialization proced

Pair status Description Corrective actionInvalid PortSpecified port is notconfigured as an initiatorport, or this path alreadyexists.Ensure that the top

Pair status Description Corrective actionFailure occurred at a localarray port.Repair the port status on the local array.Failure occurred at a remotea

Table 56 Troubleshooting suspended Continuous Access XP Journal pairsSuspendtypeApplies toDescription Corrective actionPSUE, byRCUPrimary datavolumePr

Table 57 Resolving Continuous Access XP Journal pair suspensionClassification Causes of suspensionSIMRecovery procedurePrimary arrayhardware orsecondar

Figure 3 Connection configuration for multiple secondary arraysLocal arraysContinuous Access XP Journal operations involve local arrays at the primary

• Command View XP or XP Remote Web Console configuration information saved on disk using theFD Dump Tool• Circumstances surrounding the error or failur

13 Power management for arraysand network relay devicesThis appendix explains power management for arrays and network relay devices during remote copy

When powering off primary arraysTo power off the primary array during remote copy operations, firstensurethatalldatavolumepairsormirrors (that is, pair

NOTE:To power off the primary and secondary arrays at the same time, see When powering off primary andsecondary arrays at the same time.NOTE:If you tu

224Power management for arrays and network relay devices

14 Pinned track recovery forContinuous Access XP JournalvolumesIf a hardware failure occurs when the array is in operation, some data in the array&apo

226Pinned track recovery for Continuous Access XP Journal volumes

15 SIM reportingThe local array generates service information messages (SIMs) to notify you of possible array servicerequirements. SIMs can be generat

Table58TypicalSIMshowingreferencecodeandSIMtypeReference codeByte 22 Byte 23Severity DescriptionSIM generated bySVP log file21 8 0Moderate Logical path

IndexSymbols3DC configurationcascading,74multi-target,77AAdd DKC pane,105applications, combining with,65audience,13Bbandwidth,64base-journals,29,31bitm

Continuous Access XP Journal secondary data volumes). The secondary array continuously issuesread journal commands to the primary array in order to co

FBA-to-CKD conversions,31Fibre Channel connections,17,27,47,59file recovery, 181filtering Pair Operation pane list,146Ggraph, Usage Monitor,167graphical

mirrorsdeleting data volumes from,139restoring,138splitting,137modes, optional,22monitoringdisplaying Usage Monitor pane,165graph, displaying,167savin

primary arraysCommand View XP or XP Remote WebConsole,28components,22configuring,64control units,22copy operations,21copying journals,32defined,99Fibre

savinghistory information as snapshot file,174pair status as snapshot file,147Usage Monitor data,170secondary arraysCommand View XP or XP Remote WebCons

Ttarget ports,28,103technical supportHP,14service locator website,15technical support, HP,219temporary path failures,62text symbols,14three data cente

Journal volumesWhen using Continuous Access XP Journal, updates to primary data volumes are stored in other volumes,which are called journal volumes.

CAUTION:You must register journal volumes in a journal group before creating a data volume pair in thejournal group for the first time.You can add jour

NOTE:If the metadata or journal data cannot be stored for a given length of time because the metadata orjournal data areas are full with metadata or j

Figure 4 Corresponding consistency group and journal group numbersRemote copy connectionsRemote copy connections are the physical paths that primary a

NOTE:HP strongly recommends establishing at least two independent remote copy connections from theprimary array to the secondary array and vice versa

When using Continuous Access XP Journal as a data migration tool, host failover is recommended but notrequired. When using Continuous Access XP Journa

ContentsAboutthisguide ... 13Intendedaudience... 13Prerequisites ...

The primary array's base-journal data is sent to the secondary array journal volume and then thesecondary data volume (in response to a read comm

NOTE:Toreducetheoverheadassociatedwiththeseremotecopyactivitiesandmaximizedatatransfers,the local array uses a special write command that is allowed o

Table 3 Metadata informationTypeDescriptionJournal typeJournal type (for example, base-journal or update journal)LDEV No. (data)Number of the primary

1. The secondary array provides a status indicator number as management information to distinguish(by sequence number), those data entries that have s

• Maintains sequence numbers in periods of low host activities.Journal group operationsJournal groupsmaintain update sequence consistency across a gro

Journal obtain in Continuous Access XP Synchronous secondary sitesTo perform the DC2-to-DC3 delta resync operation when a DC1 failure occurs, you must

For information about the delta resync operation that is performed when a failure occurs in theconfiguration shown in Figure 7,seeSwitching Continuous

Figure 8Delta resync activation in a 3DC multi-target configuration (after failureoccurs)In Figure 8, because a failure occurs in primary site A (DC1),

volume is copied to the secondary data volume, or the delta resync operation finishes without any furtherprocessing. In other words, any contingency to

for Command View XP or XP Remote Web Console, this SIM results in an SNMP trap indicating thereason for the suspension.• Continuous Access XP Journal

SwitchingContinuousAccessXP'smasterjournalgroup... 36ContinuousAccessXPJournaldatavolumepairstatus... 38Contin

Pair status Description Primarydata volumeaccessSecondarydata volumeaccessPSUS (pairsuspended-split)(see Table 5 forsplit types)Data volume pair is no

Pair status Description Primarydata volumeaccessSecondarydata volumeaccessPFULContinuous Access XP Journal monitors thetotal amount of data in the jou

Pair status Description Primarydata volumeaccessSecondarydata volumeaccessDeleting Pair is not synchronized and is in transitionfrom PAIR, COPY, or PS

Table 5 Continuous Access XP Journal split types (PSUS)TypeApplies toDescriptionPSUS, P-VOL byOperatorPrimary datavolumeThe secondary data volume&apos

Continuous Access XP Journal suspend typesTable 7 describes the Continuous Access XP Journal suspend types, which indicate the reason for thesuspensio

shared memory. When a Continuous Access XP Journal pair is suspended, tracks containing the followingjournal are marked in the differential bitmap as

46Overview of Continuous Access XP Journal

3 Continuous Access XP Journaloperations requirements andrestrictionsSystem requirementsContinuous Access XP Journal operations involve primary and se

NOTE:Administrator or Continuous Access XP Journal write access to Command View XP or XP Remote WebConsole is required to perform Continuous Access XP

Table 10 lists the volumes and volume capacities that can be used for Continuous Access XP Journal dataand journal volumes.NOTE:Thecapacityofajournalv

4Configuringarraysandlogicalpaths... 99DisplayingtheDKCOperationpane ... 99IfContinuousAccessXPJournalhasnotbeen

Table 12 Journal volume specificationsItemSupport specificationsEmulation typeSameNOTE:Only OPEN-V canbe used for journal volumes.Volume capacitySame or

NOTE:If you use LUSE volumes, you must add 1 to the value calculated by the above formula.• Maximum number of pairs that can be created:Use the follow

Table 14 Journal group specificationsItemSupport specificationsNumber of journal groups Up to 256 journal groups (No. 0 - 255) per array if all the foll

NOTE:When Continuous Access XP Journal and Universal Replicator for z/OS coexist in the same local array,each journal group must contain either Contin

and you use the CL1-A port as an RCU target port in the Continuous Access XP Journal primary site, youmust not use the CL1-A or CL5-A port as an RCU t

Location(channeladapternumber)Illegal port combinationsLocation(channeladapternumber)Illegal port combinationsCL3-F CL3-F, CL7-F CL3-P CL3-P, CL7-PCL5

Location(channeladapternumber)Illegal port combinationsLocation(channeladapternumber)Illegal port combinationsCLB-L CLB-L, CLF-L CLB-C CLB-C, CLF-CCLD

Location(channeladapternumber)Illegal port combinationsLocation(channeladapternumber)Illegal port combinationsCL2-F CL2-F, CL6-F CL2-P CL2-P, CL6-PCL4

Location(channeladapternumber)Illegal port combinationsLocation(channeladapternumber)Illegal port combinationsCLA-L CLA-L, CLE-L CLA-C CLA-C, CLE-CCLC

Remote copy connectionsFigure 9 shows remote copy connection configurations for Continuous Access XP Journal operations.The primary and secondary array

DisplayingtheHistoryOperationpane... 171IfContinuousAccessXPJournalhasnotbeenstarted ... 171IfContinuousAcce

Figure 11 Switch remote copy connections• Extender connectionsFigure 12 Extender remote copy connectionsCAUTION:When an MCU and RCU are connected via

The following factors affect the speed of writing to and reading from journal volumes, particularly when atemporary communications path failure occurs

A journal volume's data transfer speed depends on the data transfer speed of the RAID group to whichthe journal volume belongs. One RAID group ca

where:• VH-Mis the data transfer speed between the hosts and primary array• VM-Ris the data transfer speed between the primary and secondary arrays• t

Figure 15 Data transfer speed between primary and secondary arraysBandwidth of data transfer pathsThe bandwidth (that is, the data transfer speed) of

NOTE:You must log in with Administrator or Continuous Access XP Journal write access, and youmust be in Modify mode. If you are in the View mode, you

Functions and volumes Can volumes be usedas primary datavolumes?Can volumes be usedas secondary datavolumes?Can volumes be usedas journal volumes?P-VO

Functions and volumes Can volumes be usedas primary datavolumes?Can volumes be usedas secondary datavolumes?Can volumes be usedas journal volumes?S-VO

Functions and volumes Can volumes be usedas primary datavolumes?Can volumes be usedas secondary datavolumes?Can volumes be usedas journal volumes?Volu

Combining Continuous Access XP Journal and Business Copy XPYou can use Continuous Access XP Journal and Business Copy XP together in the same array an

12 Troubleshooting . . . ... 213Generaltroubleshooting ... 213TroubleshootingContinuousAccessXPJourna

Figure 16 Shared Continuous Access XP Journal secondary data volume andBusiness Copy XP P-VOL• Continuous Access XP Journal/Business Copy XP configurat

Figure18SharedCAXPJour.pri.datavol.&BCXPP-VOL,&CAXPJour.sec.data vol. & BC XP P-VOL• Continuous Access XP Journal/Business Copy XP configur

Figure 21 Restoring Business Copy XP P-VOLs, step 23. Execute the RAID Manager XP horctakeover command on the Continuous Access XP Journal pair tochan

Figure 25 Restoring Business Copy XP P-VOLs, step 67. Execute the RAID Manager XP paircreate command on the Business Copy XP pair to copy in theorigin

Figure 28 Restoring Business Copy XP P-VOLs, step 9Combining Continuous Access XP Journal with Continuous Access XP (3DCcascading configuration)Theloca

Basic behaviorThis section explains the basic behavior of a 3DC cascading configuration under the following conditions:• The Continuous Access XP Synch

• Local array at the primary site• Continuous Access XP Synchronous installed• Continuous Access XP Synchronous P-VOL• Local array at the Intermediate

3. Wait until the Continuous Access XP Synchronous S-VOL in the intermediate site is suspended (inSSWS status) or changed to a Continuous Access XP Sy

data volume, asynchronously with regards to writing from the host. Update sequence consistency ismaintained with the Continuous Access XP Journal seco

• Local array at the primary site• Continuous Access XP Synchronous installed• Continuous Access XP Journal installed• Volume used as a Continuous Acc

Figures1..Continuous Access XP Journal components for Fibre Channel connections . . . . . . . 202..ContinuousAccessXPJournalcomponents...

NOTE:If you delete the Continuous Access XP Synchronous pair created in step 2, the ContinuousAccess XP Journal delta resync contingency pair created

NOTE:Right after you create the Continuous Access XP Journal pair for delta resync operations or if afailure occurs at the primary site right after th

Access XP Journal pair's secondary data volume must be the secondary data volume at theContinuous Access XP Journal secondary site.b. If the Cont

Figure 32 Recovering from primary site disastersRecov. from prim. site fail. via delta resync (50-08-xx or greater FW) (prior to 50-08-xx FW)If a disa

XP Synchronous secondary site, the status of the Continuous Access XP Journal pair's data volumeschanges as explained in Table 21.Table 21 Change

Figure 33 Recovering from primary site disasters (when performing delta resyncoperations)Changing back to a 3DC multi-target configurations after recov

Figure 34 Changing to a 3DC multi-target configuration after recovering from primarysite failuresTrans. business tasks from CA XP sec. sites to pri. si

Figure 35 Transferring business tasks from CA XP second. sites to prim. sites (in3DC cascading configs.)Transfer.business tasks from CA XP sec. sites t

Figure 36 Transfer. business tasks from CA XP sec. sites to prim. sites (in 3DCmulti-target configs.)Trans.bus.tsks–DC1(W/Oajur.pr.)toDC1W/jur.pr.(del.

Table22ChgstoCAXPJrn.pr.stat.bydel.resyn.ops.(trs.bus.tsks.btw.CA XP 2nd to pri. sites)Pair status before deltaresync operationPair status after delta

37..Trns.bus.tsks–DC1W/Ojrn.pr.toDC1W/jrn.pr.(viadelresy.ops.–3DCmul-trg.conf.)... 9238..Recovering from primary sit

No.If the Status of thePair in the PrimarySite isand the Status ofthe Pair in the URSecondary Site isPerform the FollowingOperation beforeTransferring

No.If the Status of thePair in the PrimarySite isand the Status ofthe Pair in the URSecondary Site isPerform the FollowingOperation beforeTransferring

Figure 37 Trns. bus. tsks – DC1 W/O jrn. pr. to DC1 W/jrn. pr. (via del resy. ops.–3DC mul-trg. conf.)Recovering from primary site and Continuous Acce

Figure 38 Recovering from primary site and Continuous Access XP Synchronoussecondary site failuresTransferring business tasks from Continuous Access X

Figure 39 Transferring business tasks from Continuous Access XP Journal secondarysites to primary sitesCombining Continuous Access XP Journal and LUN

Table 24 Access attribute and availability as a Continuous Access XP Journal pairvolumeAvailability as a Continuous Access XP Journal pair volumeAcces

Figure 40 Copying access attributesIn Figure 40, if both primary and secondary data volumes have VMA, the primary data volume's VMAis copied to t

NOTE:If the pair is suspended or deleted during COPY status, the primary data volume's access attribute isnot copied to the secondary data volume

NOTE:If the LUN Security XP Extension license capacity is insufficient in the array at the secondary site,you might not able to create Continuous Acces

4Configuring arrays and logicalpathsTo introduce Continuous Access XP Journal into your system and configure your system for remote copyoperations, you