- 01 FAS2554 HA - 20 x 2TB SATA - 04 x 400GB SSD - Ontap 9.1
The requirement is that each data aggregate of both nodes will be configured as flashpool aggregate. (2 x aggregates of 9 SATA disks each).
I try the following:
- Assign all 4 SSDs to the 1st controller only. Create 01 storage pool with 3 SSDs leave 1 as spare (done by System Manager - spare reserved by default). The problem is: that spare was not partioned and it is not available to the second controller, only to the first one.
So, is it a best practice creating a storage pool with all 4 SSDs and no spares? (through CLI). I could see that in this way all SSDs are partitioned and assigned equally to both nodes. Any constrains or risk? Additional doubt: is RAID-4 a good choice for SSDs in this case?