When Migrating a VTSS to Threshold (0) the DBU Does Not Drop to 0.0% (Doc ID 1015009.1)

Last updated on JUNE 24, 2015

Applies to:

Sun StorageTek VSM System - Version 4 and later
Sun StorageTek Virtual Tape Control Software (VTCS) - Version 6.2 and later
IBM z/OS on System z

Symptoms

When migrating a VTSS to Threshold (0), the DBU does not go down to 0.0%.
Attempting to migrate the VTSS buffer to zero but there is still DBU percentage with no VTVs remaining.
Trying to totally flush the VTSS of VTVs.

Cause

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