We have recently bought a DELL MD3200i SAN box with three Dell Host Servers. We are going to setup a fully Virtualized network consisting of 6 Servers.
I needed some advice on where to put OS and DATA. Data wise we need about 1.8TB usable and for OS am thinking of allocating about 100GB per Server. I'm thinking of setting up two Raids on SAN:
1. Raid1 with 2 x 1TB NearLine SAS 7.2k 3.5" HD = 1TB Usable Space
2. Raid5 with 5 x 450GB SAS 15k 3.5" HD = 1.8TB Usable Space
Would it be wise to use Raid 1 to store OSs for 6 servers and more in the future and use Raid 5 to store all users data, Exchange Mailboxes Data, Sharepoint Data etc...?
Some advice would be really appreciated!