IBM Support

Space Efficient FlashCopy Repository size should not be changed for an existing repository

Flashes (Alerts)


Abstract

DS8100, DS8300, and DS8700 users with a Space Efficient FlashCopy license should not change the size of the Space Efficient Repository after it is created.

Content

In Release 4.3 (Bundle 64.3x.xx.x) and Release 5.1 (Bundle 75.1.xx.x), the -repcap and -reppercent parameters of the chsestg command allow a change in the size of an existing repository, but should not be used to increase or decrease the size of an existing Space Efficient Repository. The increase or decrease in the size of an existing Space Efficient Repository results in errors during or after the size change.

Mitigation

To increase or decrease the size of a Space Efficient Repository, back up the data in the repository, delete the existing repository and create a new repository with the wanted size.

DS8800 R6.0 (Bundle 86.0.1xx.x), DS8700 R5.0 (Bundle 75.0.xx.xx) and DS8100/DS8300 R4.2 (64.42.xx.x) and earlier are not affected. On these levels, the chsestg command fails if the size is changed.

Problem Resolution

The code fix to fail the chsestg command if the size of the repository is changed, is available for Release 4.3 (Bundle 64.36.4.0) and Release 5.1.5 (Bundle 75.15.84.0).

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Document Information

Modified date:
25 September 2022

UID

ssg1S1003793