This server is used as a DC and file server. There are 150-200 users who work simultaneously. Some user mailboxes became too big and we (IT admins) suggested for them to create .pst files and move some e-mails there. Now we have 15-20 users with several big (1-10GB) .pst files. When for some reason Outlook is closed improperly these .pst files are broken. And when Outlook is started again it starts to repair them.
And here the problems start: All network shares stop responding for periods of 30-40 seconds and work for 20-30 seconds. All network activity slows down to nearly 0% for the periods of inactivity (I am still connected to it through remote desktops so TS works in these periods) and DC authentication also stops working. CPU and memory are not overloaded in these periods.
Is there any way to fix this behavior (change some settings) or this is a bug in MS servers? The server just takes a rest when working with big files. Or should I look for another file server - Linux/Samba for example?