topic Re: Initinialize disks controller 2 on FAS2240-4 ontap 8.2.5 7-mode in Active IQ and AutoSupport Discussions

Initinialize disks controller 2 on FAS2240-4 ontap 8.2.5 7-mode

torres91 — Fri, 27 Feb 2026 19:46:26 GMT

Hi All,

I have a question. Actually, i'm working with a FAS2240-4 with ontap 7-mode with a DS4246 disk shelf. The Controller B was down by a insoncistence aggr0 and WALF. We able to rescue and recovery the data from aggr0.

At the moment, the controller A is serving production data (LUNs) to VMWare hosts.

We need to reuse the controller B and i'm searching NetApp documentation and found the use of boot menu --> op 4 " Clean configuration and initialize all disks". Before to perform this activity, I need to confirm that this operation only clean and initialize owned disks by controller B and the disks owneb by controller A will be secures.

The disks owned by controller B are in DS4246 (all 24 disks), and disks from controller B are inside of FAS2240-4 chasis.

Thanks in advance

Re: Initinialize disks controller 2 on FAS2240-4 ontap 8.2.5 7-mode

AlexDawson — Tue, 03 Mar 2026 03:03:58 GMT

Hi there! For 7 mode, yes, boot to maintenance mode first on controller B, and run "sysconfig -a", "disk show" and "disk show -a" and ensure that the ownership of the disks is correct, and at that point it is fine to use option 4 from the special boot menu and be confident it will only touch the disks it owns.

Hope this helps!

Re: Initinialize disks controller 2 on FAS2240-4 ontap 8.2.5 7-mode

torres91 — Tue, 10 Mar 2026 19:14:20 GMT

Thanks Alex for your answer. I have an additionaly question, when I come back the second controller, and I need to perform again the cluster or HA configuration, I need a maintenance window for controller A? Or this step can i do it on line?