Page Comparison

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• The ability to run a user exit program as part of FlashCopy operations.

• Simplified management with the ability to suspend and resume FlashCopy sessions.

Ability to Run User Exit Program for FlashCopy

The Start SVC Session (STRSVCSSN) command has a new target exit program parameter that submits an exit program after the target ASP action is completed.

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Simplified Management of FlashCopy with the Ability to Suspend/Resume FlashCopy

Previously a FlashCopy operation in PowerHA required a process similar to the following:

1. Start a PowerHA session to take a FlashCopy, specifying the configuration information for the FlashCopy.

2. Ending the PowerHA session when done with it.

3. Repeat the process regularly.

While PowerHA provided incremental FlashCopy as an option for some users, an incremental FlashCopy can use significantly more storage than a thin-provisioned FlashCopy. With this enhancement, PowerHA now provides the ability to suspend and resume a FlashCopy in instances where repeated FlashCopy operations are desired, which has the following benefits:

• Configuration information is specified only once, when initially starting the FlashCopy session, reducing the potential for errors.

• Reduced the time for FlashCopy operations by keeping some configuration information in place for the next FlashCopy.

• Reduce the chances of requiring manual cleanup on the external storage device.

Once done with a FlashCopy use the CHGSVCSSN with option *SUSPEND on the FlashCopy session:

CHGSVCSSN SSN(MYFLASH) OPTION(*SUSPEND)

When ready to take a new FlashCopy, use the CHGSVCSSN with option *RESUME on the FlashCopy session:

CHGSVCSSN SSN(MYFLASH) OPTION(*RESUME)

Enhancement Availability

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