Looking for some suggestions on how to setup my storage array for vmware usage. Here is my setup:
(2) Proliant GL 380 G6 (Dual E5540 2.53 Ghz, 36 GB Ram, 2x300 GB SAS, (4 CPUS, 76 GB RAM Total))
(1) HP StorageWorks MSA2000 with (12) 450 GB SAS 15k
We are a school system of about 500 users, 1400 Pcs, 20 servers.
I have a software vendor that is using SQL Server who is requiring 3 separate RAID 1 storage arrays (1 for logs, storage, and temp files). Of course this burns up 6 of my drives and wastes a lot of my space for vms. I also have Exchange to setup on a VM as well.
My Question is should I follow their recommendation and what if any is the performance hit. Some options:
(3) Raid 1 450 GB Arrays ( 6 drives used) for SQL
(1) Raid 5 2.2 TB Array (6 drives used) for vms
OR setup (1) large Raid 50 Array with several different volumes on it (for vms and sql). The vendor says that I will get more I/O by having the separate arrays... but i do not understand that as you get no performance increase from a Raid 1 configuration.
Or a hybrid of the 2. I want to get the most out of the StorageWorks for SQL and Exchange without giving up all the space and leaving me with no room for VMs.
Any questions/comments appreciated... i have seen several similar best practices questions on experts exchange already, but none seemed to quite fit my situation. In summary the question is if it is better to have independent arrays with Raid 1 or to have a hybrid Raid solution with striping that improves performance for vms, sql, and exchange?