I have a FAS8020 Cluster-mode set up as a SAS/SSD Hybrid which is going all well
but i also have a DS4246 with 24x2TB Sata drive that i need to gain the most capacity out of - we are not using this storage yet and it is set up with only 27TB of space which i would of thought should give me alot more
what would be best raid setup be if it was going to blow it away and start again
for sata 2tb disk it should be around 1.64tb per data disks. so with raiddp 2x11rg you should get 18x1.64=29.5tb. One rg with 18 data disks would be same size, but you only have 2 parity disks instead of 4. But you have 4 spares 🙂
With an update of another 24 disk you could go for 3x15rg for example with only 3 spares.
If you have a spare ssd storage pool partition you should think about adding one to your sata aggregate as they really help with io bottlenecks on sata drives.