What are the disk considerations when installing Exchange (RAID types, locations and so on).

What are the disk considerations when installing Exchange (RAID types, locations and so on).

madhurikvAsked:
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Mike KlineConnect With a Mentor Commented:
The Microsoft exchange team has written a few good entries on their blog about this, so I'll defer to them:
 http://msexchangeteam.com/archive/2004/10/11/240868.aspx
A few basic concepts in disk sizing

a) determine if you have sufficient disks
b) detect if you have a disk bottleneck
c) calculate the number of disk I/Os per second per user (also known as IOPS/user)
d) estimate how many disks you need for a new server, based on past user behavior.
Also use the exchange storage calculator
http://msexchangeteam.com/archive/2007/01/15/432207.aspx
You put in your inputs and it helps you make your decision.
How big is your organization, I'm at medium/large size so these days everything is SAN attached for us
Thanks
Mike
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