HP XP Continuous Access Software - Manual (Page 4)

One-to-one volume copy operations.....................................................................................41
Logical unit (LU) types.........................................................................................................41
Maximum number of pairs.............................................................................................43
Journal groups...................................................................................................................44
Accessing XP Continuous Access Journal primary and secondary data volumes.........................45
Cache and nonvolatile storage (NVS)...................................................................................45
Duplicate volumes..............................................................................................................46
Port configurations.............................................................................................................46
Installing hardware.................................................................................................................51
Remote copy connections....................................................................................................51
Enabling XP Continuous Access Journal options..........................................................................53
Planning for journal volumes....................................................................................................53
Considerations..................................................................................................................53
Planning process................................................................................................................54
Data transfer speed required for journal volumes...............................................................54
RAID group and journal group configurations...................................................................54
Arranging journal volumes.............................................................................................55
Journal volume capacity.................................................................................................55
Journal volumes in restore journal groups..........................................................................56
Factors that determine the data transfer speed between the primary and secondary arrays..........56
Bandwidth of data transfer paths.....................................................................................57
Journal transfer speed of DKCs........................................................................................57
Configuring primary and secondary arrays for XP Continuous Access Journal operations.................57
Combining XP Continuous Access Journal with other data management functions............................58
Combining XP Continuous Access Journal with LUSE...............................................................60
Combining XP Continuous Access Journal with Virtual LUN......................................................60
Combining XP Continuous Access Journal with XP Cache LUN.................................................60
Combining XP Continuous Access Journal with LUN Manager..................................................61
Combining XP Continuous Access Journal and XP Performance Control.....................................61
Combining XP Continuous Access Journal and XP Business Copy.............................................61
Combining XP Continuous Access Journal with XP Continuous Access (3DC cascading
configuration)....................................................................................................................66
Basic behavior..............................................................................................................67
Hardware configuration.................................................................................................68
Setup procedure...........................................................................................................69
Disaster recovery...........................................................................................................69
Combining XP Continuous Access Journal with XP Continuous Access Synchronous (3DC multi-target
configuration)....................................................................................................................69
Hardware configurations................................................................................................71
Setup procedure...........................................................................................................72
Requirements for creating XP Continuous Access Journal pairs for delta resync operations.......73
Requirements for performing delta resync operations..........................................................73
Recovering from primary site failures (prior to 50-08-xx firmware)........................................74
Recovering from primary site failures via delta resync (50-08-xx or greater FW) (prior to
50-08-xx FW)...............................................................................................................76
Change to 3DC multi-target configuration after primary site failure......................................78
Transfer tasks from XP Continuous Access secondary sites to primary sites (3DC cascade).......79
Transfer tasks from XP Continuous Access secondary sites to primary sites (3DC multi-target)....80
Transfer tasks-DC1 without jrnl pr to DC1 with jrnl pr (delta resync/3DC multi-target).............80
Recovering from primary site and XP Continuous Access Synchronous secondary site
failures........................................................................................................................82
Transferring business tasks from XP Continuous Access Journal secondary sites to primary
sites............................................................................................................................83
Combining XP Continuous Access Journal and XP LUN Security Extension.................................84
Copying access attributes...............................................................................................85
4 Contents