HP XP P9000 Continuous Access Synchronous for Mainframe Systems User Guide

Differential data options......................................................................................................36
Maximum number of pairs supported...................................................................................37
Calculating maximum number of pairs.............................................................................37
Priority for initial copy operations and scheduling order..........................................................38
Example 1: more initial copies than previously specified.....................................................39
Example 2: initial copy started, new pairs added..............................................................39
Consistency group planning.....................................................................................................40
Consistency group for pairs in one main and one remote XP P9500.........................................40
Consistency group for pairs in multiple primary and secondary systems....................................40
Consistency group requirements ..........................................................................................41
Assigning pairs to a consistency group.................................................................................42
Assigning pairs belonging to one primary and secondary system........................................42
Assigning pairs belonging to multiple main and remote systems..........................................42
Split and suspension behaviors for pairs in a CG...................................................................44
Host access after suspension...........................................................................................45
Pair status before and after a split operation.....................................................................45
Error reporting communications................................................................................................46
Data path requirements and configurations................................................................................46
Bandwidth requirements......................................................................................................46
Fibre Channel requirements.................................................................................................47
Supported data path configurations.....................................................................................47
Direct connection..........................................................................................................47
Switch connection.........................................................................................................48
Extender connection......................................................................................................48
Ports.................................................................................................................................49
Port attributes and requirements.......................................................................................49
4 Sharing Continuous Access Synchronous Z volumes......................................50
Volume types that can be shared with Continuous Access Synchronous Z.......................................50
Cache Residency....................................................................................................................52
Compatible XRC and CC.........................................................................................................52
Thin Provisioning Z.................................................................................................................52
Business Copy Z.....................................................................................................................53
Configurations with Business Copy Z P-VOL...........................................................................54
Configurations with Business Copy Z S-VOLs.........................................................................55
Status reporting and data currency.......................................................................................55
Continuous Access Journal Z....................................................................................................56
Virtual LVI/LUN......................................................................................................................56
Auto LUN..............................................................................................................................56
Restrictions........................................................................................................................56
5 Configuration...........................................................................................57
Configuration workflow...........................................................................................................57
Defining port attributes............................................................................................................57
Configuring storage systems, defining logical paths.....................................................................58
Configuring additional logical paths.........................................................................................62
Setting number of VOLs. copied concurrently, other options..........................................................63
Changing options system-wide.............................................................................................64
Changing options for a specific CU......................................................................................64
6 Pair operations.........................................................................................66
Pair operations workflow.........................................................................................................66
Checking pair status...............................................................................................................66
Creating pairs........................................................................................................................66
Suspending pairs....................................................................................................................68
Resynchronizing pairs.............................................................................................................69
4 Contents