http://msexchangeteam.com/archive/2008/06/12/449007.aspx You get what you pay for, by the way. Regards, Michael B. Smith MCITP:EM/MCSE/Exchange MVP http://TheEssentialExchange.com From: exchangelist-bounce@xxxxxxxxxxxxx [mailto:exchangelist-bounce@xxxxxxxxxxxxx] On Behalf Of Kamuni, Prabhakar Sent: Tuesday, June 17, 2008 7:48 AM To: exchangelist@xxxxxxxxxxxxx Subject: [ExchangeList] LUN spindles allocation Hi, I am doing a design for 1400 Users mailboxes, I would to know how to allocate spindles in SAN? We are going for smaller size of LUN, and using RAID 5 We thought of going for Raid 10, but it's costlier. Please advice Cheers!!! Prabhu