Hello,
Given:
1x FAS3220 HA, 7-mode, 8.2.5
3x DS2246
48x 600GB SAS
4x 400GB SSD
(3rd shelf with 24xSAS is arriving at the moment)
Current HDD config:
Contr-High:
shelf-1 2x Raid-4 aggr0 + 2x spare
shelf-2 3x Raid-4 aggr1-SSD + 1x spare
Contr-Low:
shelf-2 2x Raid-4 aggr0; 16x Raid-DP RG=16 DATA-AGGR +2x spare
So in text form ... 1 shelf fully popolated with aggr0 + small 4ssd + data-aggr AND second shelf with 4 drives for second controller aggr0 .
What im trying to do:
Im planning to add another shelf with 24x600GB SAS drives.
Questions:
1) Config advisor whines about SAS and SSD beeing in same shelf ... ok, when i will have 3 shelfs i can move SSD away to SSD only shelf. Is that really needed or in case of SSD it would be better to have even separate stack of shelfs for SSD? SSD aggregate belongs to controller which does not own data-aggregate.
2) How to better organise 2 shelfs with 24 600GB SAS drives each? Each of those shelfs mush contain aggr0 and some spares.
Is it a good idea to have 2 shelfs with 2 drives (each) for aggr0 (Raid-4) + 20 (each) data drives (raid-dp) and 2 (each) spares?
20 RG1 +20 RG2 data drives jained in DATA-AGGR. Data-AGGR belongs to controller which doesnt own SSD-aggregate.
Yes, i know that recommended/default RG size is 16 ....