Is mix FSAS and SAS disks in one aggregate possible?

Shaw_HM — Mon, 31 Mar 2025 06:52:42 GMT

So we have a
1 *FAS2750 with 20 *1.8TB(X343)
2 *DS212C with 10 *8TB(X318) each
After using 6 *1.8TB disks for root aggregate, can I put all remaining drives in the same aggregate?

PN	Capacity	RPM	Class	Type
X343A-R6	1.8TB	10000	performance	SAS
X318A-R6	8TB	7200	capacity	FSAS

I tried with -allow-mixed-rpm, it won't work, show errors: "Error: command failed: Addition of disks would fail for aggregate "aggr1_02" on node "cluster1-02". Reason: Disk type does not match type of disks in the aggregate.";
I found this KB:"How to add larger capacity disks to a RAID group that contains smaller capacity disks - NetApp Knowledge Base", and tried the "Scenario 4: A new RAID group is created in the aggregate to ensure that similar size drives remain in the same RAID group", and got errors too:"aggr add: There are not enough spare disks with matching disk type. 20 disks needed from Pool0, but no matching disks of the requested size are available in that pool.";
also tried "storage raid-options modify -name raid.mix.hdd.rpm.performance -node * -value off" still won't work.
So is mix FSAS and SAS disks in one aggregate possible?

Re: Is mix FSAS and SAS disks in one aggregate possible?

andris — Mon, 31 Mar 2025 16:05:26 GMT

Mixing SAS and FSAS disks in the same aggregate is not supported

Re: Is mix FSAS and SAS disks in one aggregate possible?

Shaw_HM — Tue, 01 Apr 2025 01:13:36 GMT

OK, thank you.

have found this KB, but just want to know if it's possible now, so it's not

topic Is mix FSAS and SAS disks in one aggregate possible? in ONTAP Hardware

Is mix FSAS and SAS disks in one aggregate possible?

Re: Is mix FSAS and SAS disks in one aggregate possible?

Re: Is mix FSAS and SAS disks in one aggregate possible?