HP XP7 Replication Manager Configuration Guide (TK981-96012, May 2014)

NOTE:

If you are using a Windows 32-bit environment, you cannot set “Large” as a memory heap size.

For details about how to increase the memory heap size, see the HP XP7 Command View Advanced

Edition Installation and Configuration Guide.

This section discusses the following:

• Maximum number of copy pairs, page 35

• Maximum number of LDEVs, page 36

• Log data and number of copy pairs, page 37

NOTE:

Mainframe system resources managed by RAID Manager must be managed as open system resources.

See “Prerequisites for managing copy pairs on mainframe systems using RAID Manager” on page 24

for more information.

Maximum number of copy pairs

The following table shows the maximum number of copy pairs.

Table 14 Maximum number of copy pairs that can be managed

Number of copy pairs

by memory heap size

Environment

LargeMediumSmall

24,00012,0006,000Open systems only

90,00060,00040,000Mainframe systems only

90,00060,00040,000

Combined open and mainframe

Notes:

1. Use this formula to determine the number of copy pairs:

(number-of-copy-pairs-for-open-systems * 6) + number-of-copy-pairs-for-

mainframe-systems

NOTE:

In consideration of response time and memory usage, the maximum number of both open and

mainframe pairs that can be operated on by the Pair Configuration Wizard at one time is 1,000. In

the case of a mainframe system, when operating a copy group or consistency group that includes

25,000 or more copy pairs, specify Medium or Large for the memory size.

Configuration Guide 35