Here it comes a touger question, I didn't intend to ask you at beignning.
I have two AFF nodes in the cluster, and each node already has 28 ssd disks(3.8TB) filling up the first raid-group in the aggr. Now, if I am adding one more ssd shelf with 24 disks. I can do:
1. add 12 disks to form 2nd raid-group, in the existing aggr on each node, 4 disks will be used for parity..
2. form a new aggr/raid-group with 24 disks on one of two nodes, 2 disks will be used for parity.
No extra spares needed, because each node already has its own spare. Option 2 will have about 6 TB more than opetion 1.
Which opiton would you go with? I probably would go option 1, only becuase it will balance well, althrough it would loss about 6TB usable space. The only thing is if there are any benifits to leave the entire shelf belong to an aggr, not split it to two different aggrs?