Many people use PSTs despite their file server administrators frustrations. And we all use OSTs to some degree, especially those who are using Outlook 2003 in cached mode. So the question is asked how do I keep Outlook performing well with such larger PST and OSTs?
Outlook 2003 will automatically defragment (aka Compact) the OST and PST for you in the background as long as Outlook is running and the CPU utilization is low on your client.
Is it possible to do this manually especially after deleting a bunch of items? Sure is.
Source
- Joel