Online defragmentation affecting server performance

We've been having trouble with our file server lately. Everyday around 5pm it fires an online defrag of the drives that basically tanks the server for 10-15 minutes.

I've attached the event log. Anyone know how I can turn this off or reschedule it to off time?

Event Type:      Information
Event Source:      ESENT
Event Category:      Online Defragmentation
Event ID:      701
Date:            3/23/2011
Time:            5:15:45 PM
User:            N/A
Computer:      FILESRV
Dfsr (3308) \\.\G:\System Volume Information\DFSR\database_F834_AD53_34AD_1622\dfsr.db: Online defragmentation has completed a full pass on database '\\.\G:\System Volume Information\DFSR\database_F834_AD53_34AD_1622\dfsr.db'.

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larry urbanDevOps EngineerCommented:
Hi PerimeterIT.

Online defragmentation is performed automatically by ESE at regular intervals following the garbage collection process. However, we cannot control the stop/start/scheduling of Online Defragmentation except to reboot the server at some time when the server is at it's lowest use. i.e. in the middle of the night. Thus the "garbage collection" will occur ever 24 hours there after and defragment will occur at the time of the reboot each night. This is the only way to get around this schedule limitation.


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Windows Server 2003

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