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Exchange 2003 Server Migration: ...should I go with RAID 5 or RAID 10, and why?

anthonyca
anthonyca asked
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Last Modified: 2010-04-10
I am migrating Exchange 2003 [from a W2K SP4 server] to a new server with Windows 2003 SP1...  I have 5 identical 74gb disc drives... should I go with RAID 5 or RAID 10, and why?
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Commented:
The main question is speed of your I/O operation not redundancy, here's what I (and Microsoft) recommend:

In summary, the following are your best guidelines for configuring mailbox servers:

Create a RAID1 partition for Windows and Exchange binary files.

Put the pagefile on a separate RAID1 spindle. For mailbox servers, you should never put the pagefile on a non-RAID partition because the loss of the volume causes the server to stop.

Create one dedicated fault-tolerant partition for each storage group for the transaction logs (for example, RAID1 or RAID 0+1). A two-disk RAID1 partition should yield approximately 300 sequential write I/O operations a second. This capacity should be more than sufficient for a busy five-database storage group.

Create at least one fault-tolerant partition for your databases. If you have only one array, put all databases on this array. If you have multiple arrays, use one array for each storage group (databases only).

Databases, SMTP queues, and transaction log files can be moved to different partitions by using Exchange System Manager.

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Commented:
sscuser,
Can you point me in the direction to where I can locate the documentation on how to peform all the steps that you mentioned in your response?

Thank you!

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