Sun Storage 2500, 2500-M2, and 6000 Arrays: Disabling MPxIO May Cause "drive type unknown" in Output of format Command
(Doc ID 1599715.1)
Last updated on AUGUST 01, 2019
Applies to:Sun Storage 6780 Array - Version All Versions and later
Sun Storage 6180 Array - Version All Versions and later
Sun Storage 2540 Array - Version Not Applicable and later
Sun Storage 2540-M2 Array - Version Not Applicable and later
Sun Storage 2530 Array - Version Not Applicable and later
Information in this document applies to any platform.
Instead of typical disk inquiry information, the Solaris command, format is reporting several drives as <drive type unknown>. Normally, one would suspect a disk or data path failure. However, there are no problems anywhere. All I/O and performance is normal. There are no error messages on the server and there are no alarms on the array.
Look for any changes to the multipath configuration on either the server or the array. Another trigger may be an upgrade to Symantecs, Storage Foundation 5.0. It may also very well be that the output has been there all along and just never noticed.
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