IHAC - VMAX with 8 engines and 8 bay filled with 600GB FC

Pools are on Raid5. each pool has 64 spindles. Presented Data & Log ThinDevice luns from these pools (SQL / SAP application) for windows 2008 server.

Application team has come back to us saying performance is very low when they do microsoft speed test on these luns presented to their servers.

Latency is the issue. IT should be less than 10-20 ms as per their requirement. All allignement etc etc is taken care of at server side.

It is a new setup built about 5 months back.

Any best practice missing here from storage side?

If so can i have a validated document?

any suggestion to improve these?

Thanks in advance

Pras