So we have two problems: the backup takes about 13 hours (so the backup finishes during business hours), and it will soon no longer fit on one tape. We consider backup very important, but don't want to needlessly spend a lot of money. Would disk backup be recommended, or should we move to a distributed system (utilizing our current technology)?
Now in terms of storage capacity, there are a few options to consider. Disk backup is definitely a way to address single tape media capacity issues, but you will have to give some thought to your off-site storage requirements (vaulting). Another option is to upgrade you current tape technology to Ultrium II, which offers 200 GB of native capacity (400 GB at 2:1 compression). Second generation Ultrium drives are also backward-compatible with Ultrium 1 media so you can access longer retention backups or archives. A small, automated tape library would also be a way to address media capacity while reducing the need for manual intervention and media handling.
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