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

Difference Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Journal Processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Creating and Storing Journals at the Primary Storage System . . . . . . . . . . . . . . . . . 37
Copying Journals to the Secondary Storage System . . . . . . . . . . . . . . . . . . . . . 37
Storing Journal at the Secondary Storage System . . . . . . . . . . . . . . . . . . . . . . 38
Selecting and Restoring Journal at the Secondary Subsystem . . . . . . . . . . . . . . . . . 38
Types of Journal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Journal Group Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Timer Type Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Journal Group Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
URz Delta Resync Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Journal Obtain in TCz Synchronous Secondary Site . . . . . . . . . . . . . . . . . . . . . 41
Switching the Master Journal Group of URz . . . . . . . . . . . . . . . . . . . . . . . . 43
URz Pair Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Suspend Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
URz Suspension Condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Business Continuity Manager Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Command Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
3 Preparing for Universal Replicator z/OS Operations . . . . . . . . . 55
System Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Requirements and Restrictions for URz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Disk Track Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
One-to-One Volume Copy Operations . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Duplicate VOLSER (Volume Serial Number) . . . . . . . . . . . . . . . . . . . . . . . . 57
Logical Volume Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
The Maximum Number of Pairs . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Journal Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Accessing URz Primary Data Volume and Secondary Data Volume . . . . . . . . . . . . . . 63
Cache and Nonvolatile Storage (NVS) . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Duplicate Volumes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Installing the Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Setting up Remote Copy Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Enabling the URz Option(s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Planning of Journal Volumes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Why Planning is Necessary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
What to Consider for Planning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
How to do Planning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Data Transfer Speeds for Journal Volumes . . . . . . . . . . . . . . . . . . . . . . . 67
RAID Group Configuration and Journal Group Configuration . . . . . . . . . . . . . . . 68
Arranging Journal Volumes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Journal Volume Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Journal Volumes in Restore Journal Groups . . . . . . . . . . . . . . . . . . . . . . . 69
Contributing Factors for Data Transfer Speed between Storage Systems . . . . . . . . . . . . 70
Bandwidth for Data Transfer Paths . . . . . . . . . . . . . . . . . . . . . . . . . . 70
DKC Journal Transfer Speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Configuring the Primary and Secondary Storage Systems . . . . . . . . . . . . . . . . . . . . 71
Using More Than One Primary and Secondary Storage System for Remote Console . . . . . . . . . 72
Basic Behavior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Hardware Configuration (When More Than One Primary and Secondary Storage Systems are Used) 74
Setup Procedure (When More Than One Primary and Secondary Subsystem are Used) . . . . . . 74
Extended Consistency Groups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Connections Among Secondary Storage Systems . . . . . . . . . . . . . . . . . . . . . . 76
Configuring paths and Ports to Establish Connections among Secondary Storage Systems . . . 77
Creating Remote Command Devices to Establish Connections among Secondary Storage Systems 77
Disaster Recovery for Multiple Primary and Secondary Storage Systems . . . . . . . . . . . . 78
Consistency of Data Update Sequence When a Disaster Occurs . . . . . . . . . . . . . 78
Disaster Recovery Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Combining URz with Other Data Management Operations . . . . . . . . . . . . . . . . . . . . 79
Combining URz with Virtual LVI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
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