HP XP P9500 Storage - Manual (Page 6)

A 3 Cnt Ac-J data-center configurations........................................................126
Overview............................................................................................................................126
3 Cnt Ac-J DC cascade configuration......................................................................................126
Failure recovery...............................................................................................................127
Requirements, restrictions, and notes...................................................................................127
Problems that can occur with delta resync.......................................................................128
Setting up the 3 Cnt Ac-J DC cascade configuration.............................................................128
3 Cnt Ac-J DC multi-target configuration...................................................................................129
Failure recovery...............................................................................................................130
Requirements, restrictions, and notes ..................................................................................130
Problems that can occur with delta resync.......................................................................131
Setting up the 3 Cnt Ac-J DC multi-target configuration..........................................................131
B Sharing volumes ....................................................................................133
Volume types that can be shared with Continuous Access Journal................................................133
Cache Residency..................................................................................................................135
Data Retention ....................................................................................................................135
Thin Provisioning .................................................................................................................136
External Storage Access Manager (ESAM) ..............................................................................136
LUN Expansion....................................................................................................................137
LUN Manager......................................................................................................................137
Fast Snap and Snapshot........................................................................................................137
Configuration with FS and SS volumes................................................................................137
Sharing FS and SS volumes in 3DC configurations...............................................................138
Virtual LUN .........................................................................................................................139
Auto LUN ...........................................................................................................................140
C Configurations with Continuous Access Synchronous...................................141
Sharing volumes with Continuous Access Synchronous...............................................................141
3DC cascade configuration ..................................................................................................141
Prerequisite information for 3DC cascade ...........................................................................142
Procedure for setting up 3DC cascade ...............................................................................143
3DC multi-target configuration ...............................................................................................143
Prerequisite information for 3DC multi-target .......................................................................144
Procedure for setting up 3DC multi-target............................................................................144
Delta resync configuration .....................................................................................................144
Prerequisite information for creating delta resync pairs .........................................................146
Procedure for creating a delta resync pair ..........................................................................146
Prerequisite information for delta resync operation ...............................................................147
Performing the delta resync operation ................................................................................148
Assigning remote command devices ..................................................................................148
Assigning mirrors to remote command devices ...............................................................149
Releasing remote command device assigned to a mirror...................................................150
2 Data center configuration...................................................................................................151
Prerequisite information for 2DC configuration ....................................................................151
Specifications and restrictions for Continuous Access Journal pair operations.......................152
Specifications and restrictions for Continuous Access Synchronous pair operations...............153
Procedure for a 2DC configuration ....................................................................................153
D Configurations with Business Copy...........................................................154
Overview............................................................................................................................154
Configurations with Business Copy primary volumes..................................................................154
Configurations with Business Copy secondary volumes .............................................................156
Pair status and data currency.................................................................................................156
E GUI reference........................................................................................157
Journal Operation window ....................................................................................................157
6 Contents