SAN choice

[unarcher]

hello there

I have got a project to virtualize under vsphere on 3 hosts a physical infrastructure of 20 physical servers including some file server, SQL servers and 2 oracle servers for our ERP

integrators suggest me 3 differents choices

-EVA 4400 with 18 600GB FC 15k disk
-P2000 with 12 15K 300GB and 24 10K 300GB disk
-IBM 3512 with 12 15K 300GB SAS DISK and 24 10K 300GB SAS DISK

which one would offer best performance for IO?

[PP BIJU KRISHNAN]

If among the three choices I would have gone for -EVA 4400 with 18 600GB FC 15k disk
Simply because it can stripe over all 18 disks and give more spindles to handle IO.
The other 2 choices in my knowledge use traditional RAID.

Now that 3PAR is an HP company, you should ask the sales guys if they are ready to offer 3PAR mid range arrays.

[SunnyS]

I'd strongly recommend adding the 3PAR offering to the list. Among other features, 3PAR has TP and Dynamic Tiering (sub-LUN level). Both are features you'll come to appreciate as the demand for capacity and performance grows on the disk array.