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Hitachi Universal Replicator for IBM /OS User’s Guide
Contents
Overview of Universal Replicator for IBM z/OS
®
...................................... 1-1
Hitachi Universal Replicator................................................................................1-2
Features...........................................................................................................1-3
Benefits............................................................................................................1-4
Business Solutions.............................................................................................1-5
About Universal Replicator Operations.................................................... 2-1
Functionality Overview.......................................................................................2-2
Journal Obtain............................................................................................2-3
Journal Copy ..............................................................................................2-4
Journal Restore ..........................................................................................2-4
Components .....................................................................................................2-4
USP V Storage Systems...............................................................................2-7
Universal Replicator for z/OS
®
Software........................................................2-7
Main and Remote Control Units....................................................................2-7
Logical DKC (LDKC) ....................................................................................2-8
Remote Copy Connections...........................................................................2-9
Initiator Ports and RCU Target Ports...........................................................2-10
Data Volume Pair......................................................................................2-10
Journal Volume ........................................................................................2-11
The Number of Journal Volumes..........................................................2-11
Specifications of Journal Volumes ........................................................2-11
Restrictions on Journal Volumes ..........................................................2-12
Journal Volume Areas.........................................................................2-13
Journal Group ..........................................................................................2-13
Extended Consistency Groups....................................................................2-14
Host I/O Time-Stamp .........................................................................2-17
Error Reporting Communications (ERC)................................................2-18
Remote Copy Operations .................................................................................2-18
Initial Copy Operations..............................................................................2-19