topic Re: Upgrade DOT requires free aggregate? in ONTAP Discussions

Upgrade DOT requires free aggregate?

fajarpri2 — Thu, 05 Jun 2025 06:02:55 GMT

Support told me to "free up" the aggregate before they can upgrade the DOT from 8.1 to 8.1.2FP2, because the aggregate is 95% used.

But pls correct me if I'm wrong.

In my opinion, the important thing is the space available in a volume, not aggregate, isn't it?

Aggregate means only the physical disk. And volume is the one used by data and also DOT.

So:

True 95% of aggr0 is assigned to vol0. But any future data including DOT upgrade will be written on the vol0, not the aggregate directly.

So, I believe I don't have to add disk to aggr0? vol0 still has lots of space.

===== DF-A =====

Aggregate kbytes used avail capacity

aggr0 490273272 467923780 22349492 95%

aggr0/.snapshot 25803856 1693144 24110712 7%

aggr1 8334645316 6478846040 1855799276 78%

aggr1/.snapshot 438665540 85778496 352887044 20%

===== DF =====

Filesystem kbytes used avail capacity Mounted on

/vol/vol0/ 372242164 9855328 362386836 3% /vol/vol0/

/vol/vol0/.snapshot 93060540 440448 92620092 0% /vol/vol0/.snapshot

aleksandar_stefanov — Mon, 13 May 2013 07:47:07 GMT

Yep, vol0 is by default thick provisioned, so there should be place on your vol0.

fajarpri2 — Mon, 13 May 2013 08:27:52 GMT

Thank you Aleksandar

fajarpri2 — Tue, 14 May 2013 02:49:52 GMT

The support engineer replied to me below.

But I don't get it. I think the doc means "amount of space in use by each aggregate" = "amount of space in use by each volume", doesn't it?

HENRYPAN2 — Tue, 14 May 2013 02:53:59 GMT

Hi Fajar,

Your support engineer response is correct "amount of space in use by each aggregate".

The upgrade need free space in AGGR to move data around.

Good luck

Henry