topic FAS 2520 Maximum usable space with one big aggregate in ONTAP Hardware

FAS 2520 Maximum usable space with one big aggregate

atlasship — Wed, 04 Jun 2025 14:09:04 GMT

Hi awesome community members,

In reference to my previous post, I have really awesome respond and I re-upgraded my *NEW* FAS2520 from 7-mode back to 9.2P2 cluster mode.

However, when I tried to create a new aggregate on the oncommand portal, it seems that 6 disks was assgined to node1 and node2, so I remembered I had to convert it to active/passive setup, and so I followed this article

So one last stupid question from me. What is the number_of_partitions I should be using? (reason I'm not sure is the articles showed 13 entries from its example, but mine only has 12 entries on the paritions/disks)

or is there a installation setup guide I could follow? I have not been able to find one. this is a FAS2520 with 12 x 4TB spec.

attached is current aggregate info.

Thank you so much!

- Atlas

Re: FAS 2520 Maximum usable space with one big aggregate

AlexDawson — Mon, 15 Jan 2018 03:56:54 GMT

Hi there,

These would be the commands to run:

set advanced
storage disk assign -force -data true -owner profx-01 -disk 1.0.0

storage disk assign -force -data true -owner profx-01 -disk 1.0.2

storage disk assign -force -data true -owner profx-01 -disk 1.0.4

storage disk assign -force -data true -owner profx-01 -disk 1.0.6

storage disk assign -force -data true -owner profx-01 -disk 1.0.8

storage disk assign -force -data true -owner profx-01 -disk 1.0.10

storage aggregate rename -aggregate aggr0 -newname N1_aggr0

storage aggregate rename -aggregate aggr0_profx_02_0 -newname N2_aggr0

storage aggregate create N1_aggr1sata4TB -diskcount 11 -node profx-01

This will leave one 4TB partition spare - if you don't want to do that, change diskcount to 12. The exact choice comes down to how quickly you can be notified of failed disks, swap disks, etc.