In our organization, we've got about 20 computers, 5 or 6 mobile users. about a combined 40gb of data. up until now we've been using a 3rd party online backup solution to keep the users documents and outlook data backed up. The more the data grows, the more the monthly price grows, and is becoming a budget problem. We have 2 windows server 2003 standard machines, and I'm building a sandboxed environment replicating the current users connected to the domain, getting ready to test/debug/deploy windows server 2008 and some vista clients. on the server 2003, I've tried setting up backup schedules with windows backup (ntbackup.exe) and its not doing what it's supposed to. Every time I set up a schedule, and wait for the right hour/30mins/10 mins whatever for the backup test, it doesn't work too well. I need a cost effective solution to replace our online backup service. It doesn't matter if we don't end up upgrading to windows server 2008/vista, I'm simply building a test environment to compare security and performance. We have like I said.. about 20 desktops - XP SP3, Outlook 2003, and some documents, etc. about 5 laptops - XP SP3, Outlook 2003/2007, documents etc.. 1 production file/dns/dhcp server, Windows Server 2003 SP2 The outcome: I'd like the server to be able to backup all users documents, outlook data, at regular intervals, so if the mobile users go out of the office for a few hours or couple days, the backup program will just pick up where it left off, keeping the data up to date. (pretty much, the same way Apple's Time Machine program works, only for PC) I appreciate the help, and a viable solution. Thanks!