That is a good way to segregate the type of data.  to bad you dont  have more disks so you can make yourself a separate Raid 1/0 group and make LUN's for the Exchange and SQL logs in it since those tend to be your high I/O lun's.  If you don't have the disks then 3 lun's will be fine
Hi All  I have recently joined a company with an AX4-5F running navisphere express edition with 8 450GB FC disks.  The AX4 is connected to two dell r905 servers running Windows 2008 R2 server core using microsoft cluster shared volumes.  The AX4 is setup with one 2.2TB lun raid 5 which host a total on 10 vm's.   My question is do you think this a recommended configuration for this setup?
Help with AX4-5F and Hyper-V