HP StorageWorks XP Remote Web Console Software - Manual (Page 4)

Requirements and Restrictions for URz.......................................................................................40
Disk Track Format...............................................................................................................40
One-to-One Volume Copy Operations..................................................................................40
Duplicate VOLSER (Volume Serial Number)...........................................................................41
Logical Volume Types.........................................................................................................41
The Maximum Number of Pairs.......................................................................................43
Journal Group...................................................................................................................45
Accessing URz Primary Data Volume and Secondary Data Volume..........................................46
Cache and Nonvolatile Storage (NVS).................................................................................46
Duplicate Volumes.............................................................................................................46
Installing the Hardware...........................................................................................................47
Setting up Remote Copy Connections...................................................................................47
Enabling the URz Option(s)......................................................................................................49
Planning of Journal Volumes.....................................................................................................50
Why Planning is Necessary................................................................................................50
What to Consider for Planning............................................................................................50
How to do Planning...........................................................................................................50
Data Transfer Speeds for Journal Volumes.........................................................................50
RAID Group Configuration and Journal Group Configuration..............................................51
Arranging Journal Volumes.............................................................................................51
Journal Volume Capacity................................................................................................52
Journal Volumes in Restore Journal Groups.......................................................................52
Contributing Factors for Data Transfer Speed between Storage Systems.....................................53
Bandwidth for Data Transfer Paths...................................................................................53
DKC Journal Transfer Speed...........................................................................................53
Configuring the Primary and Secondary Storage Systems.............................................................54
Using More Than One Primary and Secondary Storage System for Remote Console........................54
Basic Behavior...................................................................................................................56
Hardware Configuration (When More Than One Primary and Secondary Storage System are
Used)...............................................................................................................................57
Setup Procedure (When More Than One Primary and Secondary Subsystem are Used)...............57
Extended Consistency Groups.............................................................................................57
Connections Among Secondary Storage Systems...................................................................61
Configuring paths and Ports to Establish Connections among Secondary Storage Systems.......62
Creating Remote Command Devices to Establish Connections among Secondary Storage
Systems........................................................................................................................62
Disaster Recovery for Multiple Primary and Secondary Storage Systems....................................62
Consistency of Data Update Sequence When a Disaster Occurs.........................................62
Disaster Recovery Procedure...........................................................................................63
Combining URz with Other Data Management Operations..........................................................64
Combining URz with XP Cache LUN Software........................................................................66
Combining URz with Cache Residency Manager...................................................................66
Combining URz and ShadowImage for z/OS........................................................................66
Using At-Time Split Function When Combining URz with ShadowImage for z/OS......................72
Combining URz with TCz Synchronous (3DC Cascading Configuration)....................................74
Basic Behavior..............................................................................................................74
Hardware Configuration................................................................................................75
Setup Procedure............................................................................................................76
Disaster Recovery in a 3DC Cascading Configuration........................................................76
Transferring Business Tasks Back to the Primary Site...........................................................77
Combining URz with TCz Synchronous (3DC Multi-target Configuration)....................................77
Hardware Configuration................................................................................................79
Setup Procedure............................................................................................................80
Requirements for Creating URz Pair for Delta Resync Operation...........................................81
Requirements for Performing Delta Resync Operation..........................................................81
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