Hi all,I currently do Full backups on all my network servers to a tape library system. Each morning I take our the tapes from the library which have backed up the servers and they are sent off site. Due to the size of the data and the backup window I have, I need to think about alternative options to Full Backups.I have read about Differential backups, from what I have read, it requires One full backup, then every night after that intil it does the next full backup it backups up only the files which have changed since the last full backup.My questions are:1. Does a differential backup require a Full Backup to be placed inside the tape library for referral, or does the differential backup compare it's data to the catalog from the last full backup?2. What's the general practice for you guys in your environment, do you take out your differential backups from the library each morning and send them off site, or do you only send off your Full Weekly backups and not worry about the differentials. For the latter I struggle to see what you would gain by doing that.thanks for your advice.
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