I've set up servers with 5 drives, one RAID-1 pair for OS, exchange
binaries, page file, and transaction logs, and one 3-disk RAID-5 array
for databases. Said servers perform well under 150-200 connection loads.
Once everything gets into memory, the OS and Exchange binaries aren't
accessed much, so there's little worry about contention with the T-log
activity. In my experience, page file placement is also pretty
unimportant for an Exchange server if it has properly sized memory. The
server rarely uses it, so there's no need for it to go on it's own
drive.
The only real worry with this setup is file fragmentation on the T-logs,
but a quick run of defrag shows this doesn't happen with Exchange much
because the T-logs are written in 5 MB increments.
Of course, you can make a more scalable server with more spindles, but
not every server has the room (or the need) for seven drives.
Regards,
-ryan-
-----Original Message-----
From: Andrey Fyodorov [mailto:[EMAIL PROTECTED]]
Posted At: Monday, April 29, 2002 12:21 PM
Posted To: Exchange List
Conversation: Need advice about an exchange HD setup
Subject: RE: Need advice about an exchange HD setup
Exchange transaction logs and Exchange information store database files
should be on separate HD volumes.
I would do 2x RAID1 volumes and put the page file on the 5th drive.
The first RAID1 will hold the OS, Exchange executables and the Exchange
transaction logs
The second RAID1 will hold the Exchange IS database files.
This is not an ideal configuration but will be a better performer than
putting both the transaction logs and the database files on the same
RAID5
volume.
Ideally you need a machine with at least 7 drives. Then you could do
RAID1
for OS, RAID1 for transaction logs, and RAID5 for database file.
-----Original Message-----
From: Robert Williams [mailto:[EMAIL PROTECTED]]
Sent: Thursday, April 25, 2002 4:31 PM
To: Exchange Discussions
Subject: Need advice about an exchange HD setup
I am moving my 5.5 server to a new box soon.
It is a Dell 2550 with 1.2 gigs ram and 5 18gig 10k SCSI drives with
128Meg
Raid
I am planning to use the first 2 drives mirrored for the OS and the
other 3
for a raid 5 stripe for exchange....
If this is or is not a good setup, then any advice would be appreciated.
Thank You,
Robert Williams
Senior Network Administrator
Raypak, Inc.
[EMAIL PROTECTED]
Phone - 805-278-5363
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