We're planning a Exchange 2003 to Exchange 2007 migration and would like some advice for our RAID config. We have 8 x 146GB 10K SAS drives (for only about 40 hold-on-to- everything type users). My preference is a RAID 1 (2 drives) for OS and a RAID 1+0 (6 drives) for Exchange DB & Logs. My colleague is pushing for a big RAID 1+0 for everything. Thoughts and recommendations would be greatly appreciated.
Hi, You should ideally keep your OS, Exchange Database and Exchange Logs both on seperate disksets. The reasoning: you don't lose everything if one of those RAID sets dies, and you are able to restore from backup either the logs or database and be able to recover quicker. Download the latest Exchange 2007 Storage Calculator and see what it recommends http://msexchangeteam.com/archive/2007/01/15/432207.aspx If you only have 40 users then you don't really need anything more than RAID1 for each. The IOPS requirements will not be more than a single disk can handle.. RAID1 OS RAID1 Logs RAID1 Database However, checkout the calc. Oliver
