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Replying to:
kelleg
4 Ruthenium

Re: What might cause multiple failures of drives in the same slot?

John,

There's a couple of parts for VAAI - one is the HardwareAcceleratedMove (the function for Clone, Copy Templates) and a separate part called ATS (Atomic Test and Set. The ATS part is the one that handles the reservation locking for the Data Stores/LUNs - this needs to be enabled to prevent SCSI Reservations from running. Take a look at KB 91644 - the introduction sections talks about ATS and its importance. You should disable the HardwareAcceleratedMove part of VAAI, but leave the ATS part enabled.

As for the disk replacement, I would recommend that you do replace the disk - all indications are that the disk has failed. I can see where someone could get confused when looking over the older cases as it appears that the disk was not replaced as the same serial number is still there.

glen