Making offline backups of a Linux machine using Backblaze.

UPDATE: 20191229 - Added how to rotate out the oldest backups.

As frequent readers may or may not remember, I rebuilt my primary server last year, and in the process set up a fairly hefty RAID-5 array (24 terabytes) to store data.  As one might reasonably expect, backing all of that stuff up is fairly difficult.  I'd need to buy enough external hard drives to fit a copy of everything on there, plus extra space to store incremental backups for some length of time.  Another problem is that both Leandra and the backup drives would be in the same place at …

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