There are so many articles that I need to write for myself, but with my workload it becomes difficult. I’ve resigned myself to posting links to other people articles. Maybe some day I’ll get back to these.
This article discusses Mailbox cache limits in Exchange. If you ever find yourself in a situation where someone like an executive hits their mailbox storage limit and you need to change their limit very fast you might find that it is not an instantaneous change.
http://technet.microsoft.com/en-us/library/bb684892.aspx
http://theessentialexchange.com/blogs/michael/archive/2008/01/18/Exchange-Server-Caches.aspx