Notification
Risk classification
HIPER (High Impact and/or Pervasive)
Affected Domain
TS7770 (3957-VED)
Abstract
A problem has been found where TS7770 (3957-VED) backend disk cache 10TB DDM may be marked as failed prematurely.
Description
The observed issue is primarily caused by the internal cache controller RAID scrub process that can overload nearline SAS drives causing premature failures.
In addition, slow responding DDM’s may be improperly marked as failed when they aren’t.
The issues have been fixed in latest backend disk cache firmware.
Recommended Action
The problem has been addressed with vtd_exec.347 v1.03, which provides updated cache controller firmware, and should be installed on all TS7770 (3957-VED). The preferred method of installation is through remote code load where applicable.
Date first published
30 April 2021
[{"Risk Classification":"HIPER","Line of Business":{"code":"LOB26","label":"Storage"},"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"STFS69","label":"TS7700"},"ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"All Version(s)"}]
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Document Information
Modified date:
30 April 2021
UID
ibm16448976