Defrag hard disk on Exchange Server
Posted on 2003-10-21
Exchange 2000 SP3, Post SP3 Roll-up
Windows 2000 Server SP4
I noticed that our backup was running longer and longer each night. Even after removing over 5gigs of data and then running the offline defrag of the database.
I then analyzed the hard disk using diskkeeper and noticed the the drive was 68% fragmented. It was bad. Now the way I have this set up is RAID1 for the system and RAID5 for the database and logs. The system drive was just as bad.
I tried to run the defrag a couple times during somewhat non-peak times and it went through ok but its still badly fragmented. Now I ran it this morning during a peak time (not so smart) and it caused mail to stop. I the queue was backed up pretty bad. Long story short I had to reboot with SMTP set to manual and then delete all mail from the \queue directory and restart SMTP and it was fine.
My question is, is it possible to schedule and run a defrag on the hard disks while the Exchange services are running? How does everyone ensure the hard disks are not getting to badly fragmented?
It seems with the logs and mail constantly being written and removed from the disk this is going to happen frequenly.