Inexplicable Disk Space Warnings

[tinajoe7]

Our Exchange Server C: Drive is pretty stable at around 36% (1.46 Gb) free.

So does anyone have any idea why I would get the following three warnings in the Event Viewer almost every day at about 12:07 am?

Event ID 2013 (12:07:11)
The C: disk is at or near capacity. You may need to delete some files.

Event ID 3018 (12:07:56)
The available disk space on the spool drive has dropped below 10240 KB. The Internet Mail Service will not accept messages for inbound and outbound conversion until the available disk space has increased above 10240 KB.

Event ID 3019 (12:08:13)
The available disk space on the spool drive has increased above 10240 KB. The Internet Mail Service is once again accepting messages for inbound and outbound conversion.

I have my diagnostics logging set to minimum, Archiving turned off, nothing in the Archive folders in Imcdata. And I don't see any tasks scheduled around this time...

I wouldn't be concerned except it seems to hang up the Proxy Server every once in a while.

TIA

 

[zbnet]

What other disks do you have, and what are their capacities?

 

[tinajoe7]

Just one other disk, about 57% (14 Gb) free. Thanks

 

[zbnet]

The IMS does a periodic check of available disk space, and stops receiving if it drops below the 10MB free threshold (see

http://support.microsoft.com/default.aspx?scid=KB;EN-US;Q189587&

for more details).

So this would suggest that some temporary files are being written at this time each night that reduce the available disk space. Maybe you have some backup process running that backs up to disk before spooling the files to tapes?

Of slightly more concern is the fact that you only have C: and one other disk volume on this server - it is always a good idea to seperate the Exchange database files from the transaction log files, this makes your server more secure. It's also a good idea to dedicate a disk volume to the transaction logs (they write sequentially), this makes your server more efficient.

 

[dennisbbb]

Your drive is actually pretty small for Exchange I might add. If your OS swap file is increased and shrink at any time, you run into the chance of low space.

Try running the optimizer again and see if any change is needed.