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 -- O'Reilly Active Directory Third Edition - http://www.joeware.net/win/ad3e.htm -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of AD Sent: Monday, October 16, 2006 11:29 AM To: [email protected] 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 List info : http://www.activedir.org/List.aspx List FAQ : http://www.activedir.org/ListFAQ.aspx List archive: http://www.activedir.org/ml/threads.aspx List info : http://www.activedir.org/List.aspx List FAQ : http://www.activedir.org/ListFAQ.aspx List archive: http://www.activedir.org/ml/threads.aspx
