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VTSS DBU has Exceeded the HAMT with Auto-Migration Active (Doc ID 1015698.1)

Last updated on JUNE 19, 2019

Applies to:

Sun StorageTek Virtual Tape Control Software (VTCS) - Version 6.0 and later
IBM z/OS on System z


DBU has exceeded the HAMT.
DBU has exceeded the high threshold.
VTVs are not being migrated from the VTSS fast enough.
Auto migration is active.


Production workload higher than anticipated.


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