Help me optimize my drives on Exchange Server 2003

I am running Exchange 2003 SP2 for about 120 users.  Exchange seems to be rather slow and groggy when accessed from Outlook, and after running the Exchange Troubleshotting Analyzer tool, it says I have high RPC issues and a deisk bottleneck (logs are on going to the same drive as Exchange Installation, but not as the database files, which I *thought* was the preferred configuration).
Please help me get this server optimized......Here's what I'm running and where everything is:

Dell Poweredge 2800
(Disk 0 - RAID 1 connected to internal PERC SCSI card)
C:\ partition is 12GB and houses the OS and Exchange installation
D:\ partition is 60GB and houses the Exchange System Logs and the program files for Anti-Spam and Anti-Virus Apps.

(Disk 1 - RAID 5 connected to external PowerVault 2215, 4 disks installed with room for 6 more)
F:\ partition is 250GB and houses the Exchange database files
L:\ partition was just created, and I was going to move the log files to this partition.



tenoverAsked:
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michkoConnect With a Mentor Commented:
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isaman07Commented:
The fact that you had your OS and the exchange installation on the same mirrored volume, is the worst thing that you can do. As you were planning, move the logfiles to the newly created Raid5 volume and that should help you alot.Let me know.

Harout
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tenoverAuthor Commented:
isaman07-
I can do this (move the logfiles to the "L" partition, but they will still be on the same RAID array as the database files (F)...Any issues there?
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isaman07Commented:
Not at all. Raid 5 is known to be one of the fastest volumes, so go ahead and do it, you should already see a difference. Let me know.

Harout
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tenoverAuthor Commented:
Should I move both the Exchange System Logs AND the database log files to the new partition or just the database log files?  Or does it not matter...
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isaman07Commented:
Move both.
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Computer101Commented:
Forced accept.

Computer101
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