Hello everyone
We have two arrays actually, one with a 3 tier 7200c (12*480ssd+36*600fc+14*2000nl) with ao and afc, although the AFC doesn't give us practically any benefit and I have reduced it to 128gb per node from the initial 512gb. This one runs all our sap environment, and is 3 years old.
The other is an EVAP6550, 6 years old with about 40 300gb 15k disks and 22 1tb 7,2k, all 2,5" format, that owns the rest of the company and we want to renew it(mail, xenapp, file server, etc etc, backups...)
Ok so we are planning to integrate the two arrays in one new 8200, and leave the 7200 for DR in another site.
The proposed configuration (by me and my manager, after studying all our infraestructures) is having a two cage 8200 with 20*1,92tb SSD , all flash, and have the backups outside the array in a dl380 server with 10*10tb 7,2k drives in raid10.
My only doubt is that if it would be better to have fewer, bigger SSD drives (3,84tb) in only one cage (10-12 of them), or 1,92 is the sweet spot between size and number for our total size. We want to use dedup and compression in many luns.
If yes, which raid level is recommended? A 3+1 raid5 is fine?? I think in the 7200 we have it like that for the ssd tier.
Thanks in advance.