In the back recesses of my brain I seem to remember a KB that indicated
issues when one was there and the other was there and then it got moved
over there but not consistent with there that not so good things
happened. (but I just ran out of Mountain Dew Energy drink so I could
be delusional right now)
joe wrote:
I am surprised there aren't more responses to this.
My personal opinion is that a vast majority of installations don't need to
separate off the logs for perf. In fact, I have often recommended running
everything on a single RAID 0+1/10/5 (partition logically if you want to say
separate off the OS and the AD stuff) to get better perf than splitting logs
and OS off onto their own disks. Especially in larger orgs for Exchange GCs
that tried to follow the deployment docs and do mirror, mirror, mirror or
mirror, mirror, 0+1 but didn't have enough disks to get a good 0+1.
In every case that I have had to review DCs with questionable disk subsystem
perf, the issues are always around the DIT while the disks for the OS and
the Logs are snoozing with IOPS sitting there not being used that could have
saved the DIT from getting sucked into the mud. Rebuilding the disk
subsystem with all disks in one of the above configurations has alleviated
the issues in every case. Whether RAID 5 or 0+1/10 is faster you will want
to test with your own disk subystems (say with IOMETER), it seems to vary. I
have seen RAID-5 faster and I have seen on different machines 0+1/10 faster.
A case I am aware of where the logs definitely were good off on their own
and would have seriously impacted perf if they weren't was Eric's DIT
experiment where he built a 2TB DIT but he was adding objects at a very high
rate of speed constantly for quite a while so the logs were being beaten
pretty well.
joe
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-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of AD
Sent: Monday, October 16, 2006 11:29 AM
To: ActiveDir@mail.activedir.org
Subject: [ActiveDir] Seperating Database and logs on seperate disks
Is there any other reason other then performance to have the Active
Directory log files and database on separate disks?
Opinions are welcome.
Thanks
Yves
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