topic Re: Mixing drive sizes, but same lun sizes in same aggregate in ONTAP Hardware

Mixing drive sizes, but same lun sizes in same aggregate

BILL_BLAIR — Thu, 05 Jun 2025 05:59:21 GMT

IHAC with 32 15K 300GB SAS drives and 243 15K 600GB SAS drives. If I have them create the same lun sizes and raid types can I utilize luns within the same aggregate from both disk types?

Thanks,

Bill

Re: Mixing drive sizes, but same lun sizes in same aggregate

isaacs — Tue, 02 Jul 2013 19:57:44 GMT

No. An aggr should include LUNs backed by the same types of disks. You wouldn't mix SATA and SAS drives in the same aggr if they were NetApp disks, and you don't don't want to with array LUNs, either. Performance will suffer. it's possible, because ONTAP can't tell. But you should avoid it.

Re: Mixing drive sizes, but same lun sizes in same aggregate

BILL_BLAIR — Tue, 02 Jul 2013 20:01:30 GMT

But in this case they are both 15K SAS.

Re: Mixing drive sizes, but same lun sizes in same aggregate

isaacs — Mon, 08 Jul 2013 12:54:51 GMT

My apologies, Bill. I misread that. That's what I get for answering these questions when I'm on vacation.

Yes, you'll be fine.

Re: Mixing drive sizes, but same lun sizes in same aggregate

BILL_BLAIR — Mon, 08 Jul 2013 13:40:25 GMT

Thanks Daniel