Veritas NetBackup 6.0 – Synthetic Backups?

Just an interesting note.

When I took the NBU 6.0 management course earlier this year, we breifly touched on “Synthetic Backups”.

Synthetic backups are a great idea – you can build a full backup by taking the last full backup and rolling the incrementals into it.  This results in a backup that takes 1/10th the time, (assuming a disk storage unit, might be longer going directly to tape) and requires minimal bandwith.

Playing with my test environment at home, this works without an issue. The first full backup (over 10/100 network connections) took about 10 hours, the second backup took slightly over 3 hours and captured all the changes perfectly.

This works on any filesystem backup, but not database or exchange backups.

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