Hp StorageWorks XP Remote Web Console Software Manuale Utente

Hitachi Universal Replicator for z/OS user guide for XP12000/XP10000 Disk Arrays and SVS 200 Part number: T1778-96007 Fourth edition: September 200

...76 Storage System Option Settings in the Optional Operation Window . . . . . . . . . . 183 78 List in the Optional Operations W

• If pair re-synchronization has not been performed to reverse the primary volume and the remote volume of the TCz Synchronous pair (i.e., if the pai

Master JNLVOL Restore JNLVOL URz Sec. data VOL R-VOL JNLVOL Master JNLVOL Restore JNLVOL URz Sec. data VOL JNLVOL 業務Tasks 業務Tasks TCz Synchronous seco

To create this pair, use Business Continuity Manager to execute the YKMAKE command on the journal group corresponding to that pair. When the pair is c

Table 25 Changes of URz Pair Status by Delta Resync Operation (When Business Tasks are Transferred from TCz Secondary Site to the Primary Site) URz Pa

R-VOL Prim. data VOL Master JNL VOL M-VOL Restore JNL VOL Sec. data VOL Master JNL VOL TCz Sync. UR M-VOL Master JNL VOL R-VOL Prim. data VOL Restore

Master JNLVOL Restore JNLVOL Primary site URz Sec. data VOL S-VOL JNLVOL Master JNLVOL Restore JNLVOL Primary site URz Sec. data VOL S-VOL JNLVOL 業務Ta

6. Use Business Continuity Manager to execute the YKRESYNC FORWARD command on the URz pair, so that the copy direction of the pair will be returned t

4Configuring Disk Storage Systems and Logical Paths To introduce Universal Replicator for Mainframe (henceforth abbreviated as URz)intoyour systemand c

• If Universal Replicator for Mainframe has not been started: 1. Use your Web browser to display the storage device list. In the storage device list

• detailed information about remote storage systems • detailed information about logical paths • detailed information about ports on the local stor

...Tables 1 URz ConfigurationwithFICON™HostInterface ... 17 16 The Rel

NOTE: The controller ID for an XP storage system is 4. • S/N(LDKC) displays the five-digit serial number and the LDKC number of the remote storage sys

Displaying Informationabout Portsonthe LocalStorage System To display information about ports on the local storage system in the DKC Operation window:

• PCB Mode displays themodeofthe port. The modeiseither Standard, High or MIX. • Error Code displays an error code. Configuring Port Attributes The a

CAUTION: Limit the number of hosts connected to a target port to 128 or fewer to avoid mistaken disconnection. If more than 128 hosts are connected to

1. Make sure the remote copy connections and ports are properly configured. Also, get the serial number of the remote storage system. To get the seria

Figure 50 Add DKC Window The Add DKC window displays the following: • S/N: allows you to enter the five-digit serial number of the remote storage syst

Changing Options for Logical Paths and Storage Systems The DKC Option window (see Figure 51 on page 116) allows you to set the logical path options an

system is complete. The RIO MIH time valuemustbe from 10to 100 seconds. Thedefault setting is 15 seconds. NOTE: When you will run the system with the

Figure 52 Add Path Window The Add Path window displays the following: • Port: allows you to select an initiator port on the local storage system. Whe

• If you want to cancel deleting logical path(s), select and right-click the logical path(s) in the Preview list and then select Cancel. 9. Select A

...35 TypicalSIMShowingReferenceCodeandSIMType ... 216 36 AcronymsandAbbreviations ... 217 12

• No.: displays serial numbers used for rows in the list • Path Status: indicates status of a logical path (For details, see Table 27 on page 121) •

Table 27 Logical Path Status Status Remarks Normal This path has been successfully established and can be used for URz remote copy activities. Nothing

10. Aconfirmation message appears. 11. Select OK to close the message. 12. See the Preview list to check the settings that you have made. •The Previ

5 Using Journal Groups To introduce URz in your system and configure your system for remote copy operations, the primary site administrator and the sec

1. Select the Journal Operation tab. The Journal Operation window is displayed. Figure 54 Journal Operation Window The Journal Operation window displ

• Registered: When you select this item, the upper-right list displays journal groups in which journal volumes are registered. When you double-click

Initial A journal group in initial status.Journal volumes are registered in this journal group, but no data volumes (primary data volumes nor seconda

This column is blank if the attribute of the journal group is neither Master nor Restore. • S/N (LDKC): Indicates the serial number of the remote sto

Edit JNL Volumes Register or delete journal volumes Change JNL Option Change journal group options Delete JNL Groups Delete journal group Suspend P

• In the tree, right-click the selected journal group and then select Edit JNL Volumes from the pop-up menu. • In the upper-right list, right-click

About this Guide This document describes and provides instructions for using Hitachi Universal Replicator for Mainframe software to configure and perfo

Figure 55 Edit JNL Volumes Window The Edit JNL Volumes window displays the following: • JNL Volumes: Displays information about journal volumes. •

NOTE: LUNExpansion (LUSE) volumesare notdisplayed. Mainframe volumesoflessthan 50 cylinders are not displayed, either. • Parity Group: indicates the

Figure 57 TheFreeVolumes List andthe CU Button in theEditJNL Volumes Window • Timer Type: Indicates the type of clock used for consistency time. •

Caution: As a general rule, you can delete journal volumes only when the attribute of the journal group is Initial or when the status of the journal g

4. In the JNL Group Detail window (Figure 58 on page 134), view detailed information about the journal group. 5. After you finish viewing the informat

• Data Volumes: Indicates the number of data volumes associated with the journal group. When one journal group uses multiple mirror IDs, Data Volumes

This column is blank if the journal group does not belong to any extended consistency group. • JNL Volumes: Displays a list of registered journal vo

Initial A journalgroup in initialstatus.Journalvolumes areregisteredin this journal group, but no data volumes (primary data volumes nor secondary da

• Previous: Displays detailed information about the previous journal group. • Next: Displays detailed information about the next journal group. • C

Figure 59 Change JNL Option Window The Change JNL Option window displays the following: • Inflow Control: Allows you to specify whether to restrict i

Document Conventions This document uses the following typographic conventions: Typographic Convention Description Bold Indicates text on a window, o

NOTE: Ensure that thesameintervalisset to both themasterand restorejournal groups in thesamemirror, unless otherwiserequired. If theintervaldiffers be

NOTE: When there is insufficient space in the cache, journal data will also be stored into the journal volume. • Not Use: Journal data will not be st

2. Ensure that the Journal Operation window is displayed (see “Journal Operation Window”onpage123). 3. Do either of the following: • In the

Figure 60 Suspend Pair Window The Suspend Pair window displays the following: • S-VOL Write: Allows you to specify whether hosts can issue read I/O a

5. From the mirrors, select and right-click the mirror(s) that you want to restore. When you select the mirror in Stop status, the copying of data wi

Forcibly Removing Journal Groups from an Extended Consistency Group The Journal Operation window allows you to remove journal groups forcibly from an

14 6 Using Journal Groups

6 Performing URz Pair Operations To perform remote copy operations with URz, you must create pairs of a primary data volume and a secondary data volum

Figure 61 Pair Operation Window The Pair Operation window displays the following: • Tree: Lists LDKCs and lists CU images under the LDKC in the local

Figure 62 The List in the Pair Operation Window • VOL:Indicates volumes in the local storage system. The icons are: This volume not paired with any

1KB=1,000bytes 1MB=1,0002 bytes 1 GB = 1,0003 bytes 1TB=1,0004 bytes 1PB=1,0005 bytes Logical storage capacity values (e.g., logical device capacity)

SEQCHK When the secondary data volume was using the system timer, the volume received update data without time stamp from the host computer. Group The

Group If an error occurs with this pair, all the pairs in the mirror where this pair belongs will be split. Volume If an error occurs with this pair,

NOTE: When the Preview list displays changes that have been made, you can only perform the same type of operation that you have been doing and cannot

Figure 63 Display Filter Window The Display Filter window displays the following: • Host Group: Allowsyou to select thehostgroup to be displayed. If

• Internal/External VOL: Allows you to specify whether internal volumes or external volumes will be displayed in the list. If you select ALL, all the

Figure 64 Example of an Exported Text File To save information about a data volume pair in a text file: 1. If necessary, follow the instruction i

1. Ensure that the XP Remote Web Console main window is in Modify mode. For detailed information about how to do this, please refer to XP Remote Web

Figure 65 Add Pair Window The Add Pair window displays the following: • P-VOL: Indicates a primary data volume. The numbers are the LDKC number, the

NOTE: When creating more than onepairatatime,makesurethat the S-VOLs to be assigned automatically are available. If an S-VOL is not available, you wil

• Error Level: Allows you to specify the range used for splitting a pair when a failure occurs. The default is Group. • Group: If a failure occurs w

16 About this Guide

Figure 66 Pair Status Panel The Detailed Information window displays the following: • Status: Indicates the status of the pair. If the pair is split

The third line displays the volume capacity. NOTE: If a volume is an external volume, the symbol "#" appears after the LDEV number. For det

• Refresh the Pair Operation window after this window is closed: If this check box is selected, the Pair Operation window will be updated when the De

NOTE: If an error occurs, the rightmost column of the Preview list displays the error code. To view detailed information about the error, right-click

10. In thelistofthe Pair Operations window, verify that the pair has been split successfully. If the pair has been split, the status of the pair is S

• Flush: When you split the pair, update data will be copied to the secondary data volume. When the secondary storage system receives a request for s

11. In the list of the Pair Operations window, verify that the pair(s) has been restored successfully. If the pair has been restored successfully, th

• Error Level: Allows you to specify the range used for splitting a pair when a failure occurs. • Group: If a failure occurs with a pair, all pairs

Figure 70 Delete Pair Window TheDeletePairwindow displaysthe following: • Range:Allows you to specify the release range.The default is Volume if two

2. Afterall writeI/Ostoprimary datavolumehavestopped, split the mirror (i.e., apairofthe master and restore journal group. When splitting it, use th

1 Overview of Universal Replicator for z/OS This chapter provides an overview of the Hitachi Universal Replicator software and describes its features

170 Performing URz Pair Operations

7 Monitoring Remote Copy Operations This chapter describes the Usage Monitoring window which enables you to collect I/O statistics for all volumes to

Figure 71 Usage Monitor Window • Monitoring Switch:displays Enable when monitoring is on; displays Disable when monitoring is off. When monitoring is

• If you want to display I/O statistics for all LDEVs to be monitored in the storage system, select ALL Volumes. • If you want to display I/O statis

Figure 72 Display Item Window Table30RemoteCopyI/OStatistics Statistic Description Host I/O Write Record Count The number of write I/Os per second W

8Viewing HistoryofDataVolume Pair Operations The History Operation panel enables you to view history of operations for data volume pairs. For example

Figure 73 History Operation Window The History window presents: • Status displays the current status of operation history: • No history file exists:

Suspend Pair Start: Splitting (Suspending) of the data volume pair was started. Suspend Pair Complete: Splitting (Suspending) of the data volume pai

Status Change by MCU(Hold to Pending): The status of the data volume pair was changed from Hold to Pending because of an operation from the primary st

Saving Operation History into a Text File The export function enables you to save operation history into a CSV file. Theexportfunction can be used only

Residency Manager features of the XP disj Array, so that URz meets a variety of user needs and facilitates data copying and data migration. Once hardw

180 Viewing History of Data Volume Pair Operations

9PerformingOptionalOperations The optional Operations window allows you to configure options. Displaying the Optional Operation Window The Optional Ope

• List: displays storage system option settings • Preview List: When you change settings in the Optional Operation window, the Preview list displa

NOTE: If an error occurs, the rightmost column of the Preview list displays the error code. To view detailed information about the error, right-click

1. Ensure that the XP Remote Web Console main window is in Modify mode. For detailed information about how to do this, please refer to XP Remote Web

• SIM Report: Indicates whether to report SIMs from CUs to hosts. Hitachi Universal Replicator for z/OS user guide for XP12000/XP10000 Disk Arrays a

186 Performing Optional Operations

10 Using Extended Consistency Groups Displaying the EXCTG Operation Panel To make settings on extended consistency groups, use the EXCTG Operation win

Figure 80 Tree of the EXCTG Operation Window • Tree: Lists extended consistency groups. • Registered: When you select this item, the upper-right l

1. Select another tab and then reselect the EXCTG Operation tab. 2. Click File, Refresh on the menu bar of the XP Remote Web Console main window. 3.

Complementary solutions for Universal Replicator software include: • StorageWorks XP Replication Monitor software • StorageWorks XP Continuous Acces

This column displays Underflow or Overflow if an invalid time stamp is detected. If Underflow is displayed, the time stamp is below the allowable range.

Figure 83 Storage Systems in the EXCTG Operation Window • JNLG: Indicates journal group numbers. A journal group number is a two-digit hexadecimal n

4. Select Add JNLG to EXCTG from the pop-up menu. The Add JNL Group window appears (Figure 84 on page 193). 5. If you do not want to register journa

Figure84AddJNLGroupWindow The Add JNL Group window displays the following: • JNLG of the local DKC is used in check box ON: Allows you to specify whe

• ->Add: Allows you to move journal groups selected in the left JNLG list to the right JNLG list. • <-Cancel: Allows you to move journal group

consistency group, the journal group will automatically be removed from the extended consistency group. Removal of journal groups from an extended con

196 Using Extended Consistency Groups

11 Disaster Recovery Operations The type of disaster and the status of the URz volume pairs will determine the best approach for disaster recovery. Un

Switching Operations to the Secondary Site If a disaster or failure occurs at the primary site, the first disaster recovery activity is to use Business

3. At the primary site, locate primary data volumes whose pair status is not Simplex, and then locate corresponding secondary data volumes whose pair

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

20 Overview of Universal Replicator for z/OS

8. After suspension completes, execute the Business Continuity Manager YKRESYNC REVERSE command on the restore journal group (which were originally m

12 Troubleshooting Troubleshooting in General The user is responsible for the operation and normal maintenance of XP Remote Web Console computers. For

Table 31 General Troubleshooting Information for Universal Replicator for Mainframe Error Corrective Action The HP XP Remote Console software hangs, o

Path Status Description Corrective Action Resource Shortage (Port) or, Resource Shortage (Pair-Port) The local and remote storage system rejected t

Path Status Description Corrective Action Port Number Mismatch The specified port number is not correct, or the cable is not connected to the speci

Sus-pend Type Applies to Description Corrective Action Delete Pair to RCU Primary data volume The primary storage system detected that the secondar

Table 34 Resolving URz Pair Suspension Classifica-tion Causes of Suspension SIM Recovery procedure Primary storage system hardware or secondary storage

for assistance, please report the URz and SVP error code(s). Please refer to XP Remote Web Console Messages for a list of error codes displayed on th

208 Troubleshooting

13 Power Management for Disk Storage Systems and Network Relay Devices This appendix explains power management for storage system s and network relay

2 Overview of Universal Replicator Operations This chapter provides an overview of Universal Replicator operations: Functionality Overview URz provide

storage systems. When powering off the primary storage systems, you must power off the supervisor DKC first, and then the subordinate DKCs. Caution: If

When YouPower Offthe Primaryand SecondaryStorage Systemsatthe Same Time If you want to power off the primary and secondary storage systems at the same

212 Power Management for Disk Storage Systems and Network Relay Devices

14 Pinned Track Recovery for URz Volumes If a hardware failure occurs when the storage system is in operation, some data in the cache memory of the st

214 Pinned Track Recovery for URz Volumes

15 SIM Reporting TheXPstorage system reportsaserviceinformation message(SIM) to thehostwhenitisnecessary to notify the user of a possible service requ

0 1 2 3 4 5 6 7 8 9 1011 12131415 16 1718 19202122 23242526 27 28 2930 31 Byte 00 90 10 00 00 00 8F E0 44 10 00 04 00 80 04 0C 69 00 00

16 Acronyms and Abbreviations Table 36 Acronyms and Abbreviations CU control unit ESCON Enterprise System Connection (IBM trademark for optical chann

218 Acronyms and Abbreviations

Index C consistency status,49 D database recovery,197 disaster recovery file/DB recovery,197 preparing for,197 switching to the remote site,198 documen

Primary site Secondary site Primary host Secondary host Write instruction Primary storage system Secondary storage system Primary data volume Issuing

URz Components URz operations involve the XP disk array storage systems at the primary and secondary sites, the physical communications paths between

Primary storage system Secondary storage system Master Secondary Restore Primaryjournal Ldata journal data volume volume volume volume Master journal

Main and Remote Control Units The main control unit (primary storage system) and remote control unit (secondary storage system) control URz operations

Data Volume Pair URz performs remote copy operations for data volume pairs created by the user. Each URz pair consists of one primary data volume and

Journal volumes in the same journal group can be of different capacity. A master journal volume and the corresponding restore journal volume can be of

For instructions on formatting volumes, please refer to the Virtual LVI/LUN and Volume Shredder User’s Guide. The volume does not need to be formatte

secondary storage system issues a "read journal" command to the primary storage system, and then the RCU target port at the primary storage

Contents AboutthisGuide ... 13 Intendedaudience... 13 Relateddocumentation...

which results in an IEA491E system console message. This information should be transferred to the primary site via the ERC for effective disaster det

The base-journal data is stored in the entire data volume or the area for the difference. The area for the difference is used when the difference res

• System. When the System timer option is selected, the primary storage system acquires the time-stamp information for each journal data as follows.

system negotiate the resynchronization of the pair(s). See “Suspend Types” on page 48 for further informationonURz suspendtypes. During normal URz op

NOTE: Two or more initiator ports must be configured before you can add the secondary storage systems and create the URz volume pairs. The fibre-channel

If the journal-obtain operation starts at the primary data volume, the primary storage system obtains all data of the primary data volume as the base-

in the secondary data volume according to the write sequence number of journal data. This will maintain the data consistency between the primary and s

• Creating and storing journals at the primary storage system (see the next section), • Copying journals to the secondary storage system • Storing

Storing Journalatthe SecondaryStorage System A secondary storage system receives the journal data that is transferred from a primary storage system ac

Figure 6 Selecting and Settling Journal at the Secondary Subsystem The secondary subsystem settles and restores the journal data to the secondary data

DifferenceManagement ... 36 JournalProcessing... 36 CreatingandStoringJournalsatthePrim

Timer Type Option The timer type option allows you to specify the method applied by the primary storage system to acquire the time-stamp information f

will be restored quickly by the delta resync operation, you will not need to wait for a long time before you can use the URz data volumes again. Delta

TCz Synchronous, URz primary site URz secondary site primary host master JNL VOL journal obtain secondary host secondary subsystem secondary dataVOL

NOTE: The URz pair needs to be in Hold status to form the delta resync operation when the failure occurs. However, the URz pair status may be changed

TCz Synchronous, UR primary site A URz secondary site Journal data flow secondary subsystem secondary dataVOL restore JNL VOL journal restore primary

In delta resync operation, the status of the URz pair will not change to Pending Duplex but Duplex. This is because delta resync operation copies only

secondary data volume (if the path status is normal) to suspended. When a pair is suspended from the secondary storage system, the secondary storage s

Table4URzDataVolumePairStatus Pair Status Description Simplex Thisvolume isnot currently assigned to a URz data volume pair. This volume does not

Pair Status Description SEQCHK The secondary storage system encountered a non-time-stamped journal data for a URz pair using the System timer type o

Table 7 on page 50 lists and describes the consistency status descriptions for suspended URz secondary data volumes. When a URz pair is suspended, whe

CombiningURzwithCacheResidencyManager... 81 Transferring Business Tasks from TCz Secondary Site to the Primary Site (in 3DC Cascad

Table 6 Consistency Status for Suspended URz Secondary Data Volumes Consistency Status Description Volume This URz volume pair was suspended alone. U

After marking these primary data volume tracks as modifi ed, the primary storage system discards these journal data. This ensures that journal data los

Table8SAIDValuesforthePATHLINKParameter(FRONTCL1) Pack-age Lo-cation Port SAID Pack-age Lo-cation Port SAID Pack-age Lo-cation Port SAID Pack-age Lo-c

Table9SAIDValuesforthePATHLINKParameter(REARCL2) Package Location Port SAID Pack-age Lo-cation Port SAID Pack-age Lo-cation Port SAID Package Location

set only from Business Continuity Manager. For information about Business Continuity Manager, please refer to the Business Continuity Manager User Gui

3 Preparing for Universal Replicator z/OS Operations This chapter describes URz operations involving the XP disk array primary and secondary storage s

NOTE: Administrator or URz write access to the XP Remote Web Console Java applet program is required to perform URz operations. Users without Administ

NOTE: URz does not support operations in which one primary data volume is copied to more than one secondary data volume, or more than one primary data

Table 11 on page 58 lists the volumes and the volume capacity that can be used for the URz data volume and journal volume. The capacity of journal vol

The table below explains emulation types and the capacity of volumes that can form pairs. For details on the maximum number of pairs, see “Journal Gro

SplittingaPairofDataVolumes ... 163 RestoringaPairofDataVolumes... 165 DeletingaPairofDataVolu

Table 15 Number of Cylinders According to Each Emulation Type Emulation type Number of Cylinders 3380-J 885 3380-E 1,770 3380-K 2,655 3390-1 1,113

Table 16 The Relationship between Additional Shared Memory and Total Number of Bitmap Areas of Storage System Additional Shared Memory for URz Total

Table 17 Maximum Number of Pairs According to Each Emulation Type, When Pairs Are Created Without Use of VLL Volume Emulation Type Maximum number of p

Table 18 Journal Group Specifications Item Support specifications Number of journal groups Up to 256 journal groups (No. 0 - 255) per one storage subsys

Cacheand NonvolatileStorage (NVS) Cache and nonvolatile storage (NVS) must be operable for both the primary storage system and secondary storage syste

6. HP Representative: Install the URz remote copy connections between the primary storage system(s) and secondary storage system(s). This hardware (

Host Host Initiator port (Primary) (Secondary) NL_Port NL_Port *1 RCU target port Ordinary fibre-channel interface port (target port)MCU RCU *1 F

Planning of Journal Volumes Why Planning is Necessary Data transfer speed for journal groups is affected by specifications of journal volumes that the

Data transfer speed Data transfer speed between hosts and the MCU Data transfer speed of journal volumes Data transfer speed between the MCU and the

Journal Volume Capacity In Figure 14 on page 69, the size of the shaded area indicates the amount of journal data to be stored in journal volumes as a

16AcronymsandAbbreviations... 217 Index ... 219 Hitachi Universal Replicator for z/OS user guide for XP1200

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

data transfer speed in the "normal status" mentioned earlier. The maximum number of paths for each pair of the primary DKC and the secondar

Using More Than One Primary and Secondary Storage System for Remote Console System configuration of up to four primary subsystems and up to four second

To perform arbitration processing, the supervisor DKC must be connected with the subordinate DKCs. For details on connections between secondary subsys

3. From journal data having the time stamp and earlier time stamps, the subordinate DKCs restore all journal data that have not been restored, in the

Table 20 Specifications of Extended Consistency Groups Item Specifications The number of extended consistency groups that can be created Up to four per

• The consistency time of an extended consistency group is the latest time stamp of the restored data in the group in which consistency is guaranteed

Supervisor DKC (Secondary storage system 1) Subordinate DKC (Secondary storage system 2) Remote command device AA’ BB’ Subordinate DKC (Secondary stor

Disaster Recoveryfor Multiple Primaryand SecondaryStorage Systems Consistency of Data Update Sequence When a Disaster Occurs When a failure occurs in

3. Afterrecoveryofthe primary hostorstorage system fi nishes, switch operations from the secondary site to the primary site. This disaster recovery pr

...Figures 1 URComponentsforFibre-ChannelConnection... 22 15 Data

Functions and Volumes Can the Volumes be Used as Primary Data Volumes? Can the Volumes be Used as Secondary Data Volumes? Can the Volumes be Used a

Functions and Volumes Can the Volumes be Used as Primary Data Volumes? Can the Volumes be Used as Secondary Data Volumes? Can the Volumes be Used a

Table 22 Host Pair Status Reporting for URz/SIz Shared Volumes Number of URz pairs Number of SIz T-VOLs Pair status reported by XP disk array 0 0 Sim

Figure 22 on page 83 shows an example of a URz secondary data volume which is also functioning as a SIz S-VOL. This configuration allows you to use SIz

In the following example, the SIz T-VOL in Split status is also functioning as a URz primary data volume. This configuration allows URztomakearemote b

URz SIz S-VOL in Split status T-VOL in Split status Primary data volume Secondary data volume Master journal volume Restore journal volume MCU RCU Fig

URz Primary data volume (suspended) Secondary data volume (suspended) Master journal volume Restore journal volume MCU RCU Figure 28 Restoring a SIz S

URz SIz S-VOL in Split status T-VOL in Split status Primary data volume (suspended) Secondary data volume (suspended) Master journal volume Restore jo

URz MCU Primary data volume Master journal volume Business Continuity Manager Restore journal volume - Secondary data volume - SIz S-VOL RCU Execute

• When you execute split operation, the URz pair status must be duplex, and the SIz pair status must be either duplex or pending. If the status of th

...36 Basic Behavior in 3DC Cascading Configuration... 91

secondary data volume is the volume in the secondary site, which is within a long distance from the intermediate site. If a host issues an I/O to the

R-VOL/ Primary data volume Master JNLVOL Restore JNLVOL Primary site Intermediate site Secondary site M-VOL Secondary data volume I/O I/O finished Tra

Setup Procedure This section explains the procedure for setting up a 3DC cascading configuration using TCz Synchronous and URz. To set up a 3DC cascadi

could not change the URz pair status to Duplex and could not reverse the copy direction, please use Business Continuity Manager to execute the YKRESYN

Master JNLVOL Restore JNLVOL Primary site URz secondary site Sec. data VOL S-VOL JNLVOL TCz Synchronous (short distance) URz (long distance) (for use

Each of these sites requires one XP storage system and XP Remote Web Console computers. It is recommended that Business Continuity Manager should be

6. Specify the TCz Synchronous R-VOL in TCz Synchronous secondary site as the primary data volume, and specify the secondary data volume in URz secon

When either of the abovementioned requirements is not fulfilled, usually an error occurs and delta resync operation will fail. Especially in the follow

M-VOL JNLVOL Restore JNLVOL URz Master JNLVOL R-VOL JNLVOL Restore JNLVOL URz Master JNLVOL 業務Tasks 業務Tasks TCz Synchronous TCz Synchronous TCz Synch

Table 24 Changes of URz Pair Status by Delta Resync Operation (When Recovering from Failures in the Primary Site) URz Pair Pair Status before Delta Re