Zimbra

amagdic · #1 (**permalink**) 12-06-2009, 02:29 PM

Hi,

we have Sun StorageTek 2530 with 12 600GB 15K drives.

What is best recommended RAID configuration for 200 users enviroment, for quick webmail response and heavy calendar usage? We would need about 2TB of storage space.

I am asking, since we used Zimbra with NAS with SATA RAID6, and we've delays of 2-3 seconds when sending emails from webmail

regards

Dirk · #2 (**permalink**) 12-07-2009, 01:45 AM

Raid 10 is generally considered to offer best performance in this instance.
I'd say put five of the drives in a stripe (raid 0) giving you 5x600GB space, another five in a mirror of that stripe (raid 1) and set the other two to be online spares.

That'd give you a high speed raid 0 stripe of 3tb with a full mirror for security.

*dave_kempe* · #3 (**permalink**) 12-07-2009, 03:27 AM

yeah i think that storagetek box has a raid 10 mode, so you can get an even number of drives, and put them in raid10, lose half of them to redundancy and keep a couple as spares. 12 -2 = 10/2 = 5*600= 3TB. If you are having I/O issues, get more ram, and make sure the O/S has enough to buffer the I/O as well. A decent amount of battery backed ram on the controller is also good.