Hi dears, Our environment is CCR. Mailbox server on one server,CAS\HUB on second server and Edge transport on Separate machine in DMZ Recently the CAS\HUB server C: drive (Having 50GB size) is getting full even "0 byte" yesterday I managed to move Inetpub Logs to D: drive and everything is ok. But my concern is why this inetpub logs growing in such a huge way it was around 15 GB in size on Active Node (CAS\HUB 1) I have around 5000 users in organisation Was the implemented Disk sizing insufficient ? it was done by somebody else long back And finally I was getting the Exception message: There is not enough space on the disk. Error due to this some of the OWA users were complaining.Once I moved the logs it works fine( Users were not able to attach PDF/PPT into OWA). So please advice me how to clear more data from C: drive i have following files in it as usual--- 1.Program files 2.Program files (x86) 3.Windows 4.Inetpub 5.temp 6.Users Thanks in Advance!!! Manju

How far back did the the IIS logs go? 15GB is really not that much since its recording all IIS actvity to the CAS. Can you move the IIS logs to another drive with more space? Regardless ou'll have to script something or use an existing one like to automatically purge: http://msexchangetips.blogspot.com/2006/08/exchange-managing-smtp-and-iis-log.html or manually purge them periodically.

There also this: http://gallery.technet.microsoft.com/scriptcenter/en-us/b50347d4-6f60-4716-87ba-ee4166359fa1 [string](0..33|%{[char][int](46+("686552495351636652556262185355647068516270555358646562655775 0645570").substring(($_*2),2))})-replace " "