We're running windows server 2003 and as of now, we are using NTBACKUP - however, we are looking for another tool, preferably something free which offers mediocore features.
The reason we want to move away from NTBACKUP is that it is not very reliable. Sometimes our full backups are 70GB and sometimes they come up to 110+GB with the exact same options and files selected. Incrementals (run a day after) also run up to something silly like 40GB which is impossible since nothing much changes on the server.
edit: We're looking into remote backup too (something like jungle disk) but for now, we have 2 hdd's; one for offsite storage and one onsite.
edit1: Okay so one thing I'm trying tomorrow is a tool called 'handy backup'. Apparently we already have a licence for it on the server so I'll see how that goes. Still open to suggestions - we did have a trial of 'shadow copy' however, the licence (500$) was a bit too expensive for our liking.