Hp XP P9500 Storage Bedienungsanleitung PDF herunterladen (Seite 50)

4. In the Maximum Initial Copy Activities box, enter the number of volumes that you want to be

copied concurrently during initial copy and resynchronization operations. Valid values range

from 1 to 128 volumes. The default is 64 volumes.

• This setting can impact performance on the primary system, depending on the number

specified and the amount of I/O activity. By using the default, 64 volumes, you limit the

impact of initial copy operations on system performance.

• When you create or resychronize a greater number of pairs than you define in Maximum

Initial Copy Activities, the system processes the specified maximum number, and starts

additional pairs after one of the specified number is synchronized.

For example, if you specify 70 for Maximum Initial Copy Activities and then create 75

pairs, the system starts the first 70 pairs but does not start the 71st pair until one of the

pairs is synchronized.

5. Click Set. Review if needed in the Preview list.

• To modify the setting, right click and select Modify.

• To cancel, right click and select Cancel.

6. Click Apply to save the configuration.

Registering journal volumes in a journal

You set up journal volumes by registering them in a journal. The procedure in this section allows

you to register journal volumes for use in 3 Cnt Ac-J DC configurations. You must either enable all

journal volumes being registered in the session for use in a 3 Cnt Ac-J DC configuration, or specify

that all journals registered in the session are not for use in these configurations (disable).

Prerequisite information

• Review the following:

“System requirements” (page 15)◦

◦ “Planning journals ” (page 20)

◦ “Planning journal volumes ” (page 22)

• The journal’s mirror status must be Initial, Active, Stopped, Hold, Holding, or Hold(Failure.

• The journal cannot be in use.

• Pair operations involving the journal cannot be in progress.

• Cache Residency settings cannot be defined for the volumes.

50 Configuration operations

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Hp XP P9500 Storage Bedienungsanleitung Seite 50