VMAX doc - important known issue
A ucode upgrade on an VMAX All Flash will cause issues if
workloads are leveraged. This known issue needs to be
documented until a fix is merged.
@@ -12,6 +12,17 @@ storage management software. They use the Requests HTTP library to communicate
with a Unisphere for VMAX instance, using a RESTAPI interface in the backend
to perform VMAX storage operations.
+.. note::
+
+ KNOWN ISSUE:
+ Workload support was dropped in ucode 5978. If a VMAX All Flash array is
+ upgraded to 5978 or greater and existing volume types leveraged workload
+ e.g. DSS, DSS_REP, OLTP and OLTP_REP, attaching and detaching will no
+ longer work and the volume type will be unusable. Refrain from upgrading
+ to ucode 5978 or greater on an All Flash until a fix is merged. Please
+ contact your Dell EMC VMAX customer support representative if in any
+ doubt.
+
System requirements and licensing
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