topic Re: How to unfail a disk? in ONTAP Discussions

How to unfail a disk?

DCHEBOTAROV — Thu, 05 Jun 2025 05:53:36 GMT

I'm looking for help on how to unfail a disk.

I'm running some test on non-production system (yet) and failed one of the disks.

VCC:::> storage disk fail -disk VCC-01:0a.10.4

(waited for copy to finish and removed failed disk)

Now, trying to put it back online as spare:

VCC::*> storage disk unfail -disk VCC-01:0a.10.4 -s true

Error: command failed: Failed to unfail the disk. Reason: Disk 0a.10.4 not found.

VCC::*> storage disk unfail -disk 0a.10.4 -s true

Error: command failed: Failed to unfail the disk. Reason: Disk 0a.10.4 not found.

but system 'sees' the disk:

VCC::*> storage disk show

Usable Container

Disk Size Shelf Bay Type Position Aggregate Owner

---------------- ---------- ----- --- ----------- ---------- --------- --------

...

VCC-01:0a.10.4 - 10 4 broken present - -

...

What am I missing?

Thank you.

Re: How to unfail a disk?

MCARDINA221975 — Fri, 20 Sep 2013 19:11:15 GMT

Dmitri,

I am guessing that you are running in cluster mode? If this is the case, I believe you need to specify the node to which the disk belongs.

Try this : storage disk unfail -disk VCC-01:0a.10.4 -s true

Hope this helps.

-Mike-

Re: How to unfail a disk?

MCARDINA221975 — Fri, 20 Sep 2013 19:18:45 GMT

You might also try this :

> storage disk modify -disk VCC-01:0a.10.4 -state unfail

Re: How to unfail a disk?

DCHEBOTAROV — Fri, 20 Sep 2013 19:37:32 GMT

Michael,

Yes, it's 8.2P2 in C-mode, sorry forgot to mention.

VCC::*> storage disk unfail -disk VCC-01:0a.10.4 -s true

Error: command failed: Failed to unfail the disk. Reason: Disk 0a.10.4 not found.

VCC::*> storage disk modify -disk VCC-01:0a.10.4 -state unfail

Error: command failed: Failed to unfail the disk. Reason: Disk not found.

VCC::*> storage disk modify -disk VCC-01:0a.10.4 -state spare

Error: command failed: Failed to unfail the disk. Reason: Disk 0a.10.4 not found.

My goal is to clear 'broken' state and make is spare.

Thank you.

Re: How to unfail a disk?

MCARDINA221975 — Fri, 20 Sep 2013 20:04:52 GMT

Very interesting. Your syntax is correct. Those commands should have worked.

You could then try to "run" the unfail command against the owning node.

>run -node "nodename" disk unfail -s 0a.10.4

If it still cannot find the disk...maybe you could remove it from the shelf and re-seat it?

-Mike-

Re: How to unfail a disk?

MCARDINA221975 — Fri, 20 Sep 2013 20:05:59 GMT

I should have prefaced that last statement. You will need to be in "diag" mode before you can run that command.

1) >set diag

2)) >run -node "nodename" disk unfail -s 0a.10.4

--Mike-