Exchange 2007 RAID Configuration

dan.hoetger · Joined: 31 Jan 2008 Posts: 1

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.

Archived from group: microsoft>public>exchange>design

Oliver Moazzezi [MVP] · Joined: 02 Oct 2007 Posts: 583

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

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