HP XP Racks - Manual (Page 13)

Requirement Item
of 64 path groups are supported. Multiple path groups can be used in the same
combination of primary and secondary storage systems.
Groups of remote paths, which allows you to configure or change the configuration of
multiple paths at the same time. Path group
• A maximum of 64 path groups can be set in a storage system.
•
The following values can be set as the path group ID:
◦
0-255 (0 to FF in hexadecimal) when connected to XP7 or P9500.
◦
0 only when connected to XP24000/XP20000 Disk Array
• The path group is specified during the create pair operation. It cannot be changed by
the resync pair operation.
•
Path groups can be created and specified using RAID Manager. See configuration
setting commands in HP XP7 RAID Manager User Guide and sample configuration
definition files in HP XP7 RAID Manager Installation and Configuration User Guide.
•
It is recommended that you specify different paths and path groups for Cnt Ac-J and
Cnt Ac-J Z secondary systems when using CU Free.
Up to 64 secondary Cnt Ac-S, Cnt Ac-J, and Cnt Ac-J Z systems can be set per primary
system. Maximum number of
secondary systems (System)
Pair volumes •
The P-VOL and S-VOL must be equal in size.
•
The maximum size of the P-VOL and S-VOL is 4,194,304.000MB (8,589,934,592
blocks) each.
•
The minimum size for OPEN-V P-VOLs and S-VOLs is 46.875MB (96,000 blocks). For
all other emulation types, minimum size is 35.156MB (72,000 blocks).
•
A P-VOL may be copied to only one S-VOL.
• P-VOL and S-VOL can be shared with other HP software product volumes. See “Volume
types that can be shared with Continuous Access Synchronous” (page 37) .
See “Planning pairs and pair volumes” (page 19) for more information.
Limited per XP7 storage system. See “Maximum number of pairs supported” (page 21) . Number of pairs
Maximum: 256 (0x00 to 0xFF) Number of consistency
groups
System requirements and specifications 13