I'm planning new Exchange infrastructure to migrate my existing email infrastructure on it. I have ~120 users with ~3-8 Gb mailboxes and a lot of public folders (~80 Gb). Total used mailbox space on current server is ~700 Gb. I have 12 3.5" drive bays, six-core Xeon v3 3.5GHz , 64 GB of RAM and high-endraid card with BBU connected to 8 drive bays with 8 1Tb WD Raid edition drives (7200k) in these bays. I have 3 another low-loaded VMs on this host.
RAID 10 pool on whole disks is fastest, but I hear recommendations to provide dedicated storage for mailbox databases and don't mix Exchange DBs and logs, OS volume and another virtual machines on the same physical disks.And I want to depoly second server as a DAG member on another hypervisor. How can I use my storage in most effective way? All 8 discs as one RAID10 volume? Dedicated RAID volume for hypervisor OS with exchange system VHD on it and another raid volume for exchange data? Dedicated volumes for all exchange databases ang logs? Pass-through storage or VHDs?
I want to keep things simple but don't miss something important in perfomance and scalibility.