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DS8870 Global Mirror suspend caused by a Track Format Descriptor mismatch

Flash (Alert)


Abstract

Global Mirror suspends caused by a microcode logic error introduced in R7.4 that results in a Track Format Descriptor mismatch.

Content

Global Mirror suspends caused by a microcode logic error introduced in R7.4 that results in a Track Format Descriptor mismatch. Microcode is improperly setting a flag in a PPRC control block. This problem is pervasive in Global Mirror environments. R7.4 code levels below 87.41.44.0 and R7.5 levels below 87.51.23.4 are exposed to this issue.
Recommendation:
A mandatory ECA 712 is being released to the field, we recommend upgrade to code bundle R7.5 87.51.23.4

ID: 312882

Document information

More support for: DS8870

Version: Version Independent

Operating system(s): N/A

Software edition: N/A

Reference #: S1005674

Modified date: 15 February 2016


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