Hi, I'm relatively new to Backup Admin stuff so please bare with me.
We recently bought a little Buffalo TeraStation NAS (1.6TB) and my plan was to do a Full Backup to begin with then a Differential Disk Based Backup every night then at the end of the week, do a Backup of this to a Tape using a DELL PVT 122T (Off-site as part of our DR/BC plan), I'm using Veritas Backup Exec 9.1.
The first Full Backup worked so I set the Differential (Using Modified Time) Backups in motion but a daily differential backup is averaging at 50Gb (approximately 1Gb for Staff) which I know we aren't using in a day. Which is being added on to the backup if you like, At the rate I'm going my NAS will be maxed out in a few weeks & backup to tape is almost out of the question already (PVT Tapes are 160/320Gb)
My question is am I doing this all wrong, is differential the correct method ?
I'm almost 1 week into the process, will it level out, am i worrying to early ?
Thanks in advance