topic How to replace a disk from another Netapp in Data Protection

How to replace a disk from another Netapp

siemensocs — Fri, 19 May 2017 12:20:46 GMT

Hello Community,

we have a working Netapp Setup with 3 different size Disks. Recerntly I noticed that there is a disk failure and the system already replaced it with one of the Spare disks.

I wish to now insert a disk of the same size as spare for future. Unfortunately I only have higher range disks in stock.

Questions ,

1. I think I can add higher sized disk into spare and when one of the lower sized disks fails , it will still get replaced with the higher ones. Correct me if I am wrong. But the documentation says its possible without disturbing the RAID structure. Only drawback is that the extra space will get wasted. Thats ok with me. But please confirm that its possible.

2. Secondly I do have same sized disks as well but they are not new. They are taken out from older Netapp which is not in use anymore. So first , am I allowed to add such disks straightaway as spare in existing Netapp? If yes , will the procedure be same? Normally we just take out the failed disk and insert a new one in the same slot. And using command <disk assign disk-id> I would add the new disk to spare. Will this procedure remain same or I should be deleting existing data from the disk first? I assume there could be data on these disks, as they were in use in older Netapp. Kindly point me in right direction.

Thanks in advance.

Regards,

Sachin

Re: How to replace a disk from another Netapp

skneo — Fri, 19 May 2017 15:37:30 GMT

yes

you should unowne the disk if possible in the old system

options disk.auto_assign off

priv set advanced

disk remove_ownership disk_name

disks should unowned

remove disks

options disk.auto_assign on

or take onwership on new system

priv set advanced
disk reassign -s -d <new sysid>

Re: How to replace a disk from another Netapp

Ashun — Sat, 08 Feb 2025 08:41:03 GMT

skneo is right,

When adding larger drives to an existing RAID group of smaller drives, the larger drives will be right sized to match the usable capacity of the smaller drives.

Does ONTAP allow mixing of drive sizes in a RAID group? - NetApp Knowledge Base