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Linux-backup.md

Linux Backup Solutions

I've been looking for the best Linux backup system, and also reading lots of HN comments.

Instead of putting pros and cons of every backup system I'll just list some deal-breakers which would disqualify them.

Also I would like that you, the HN community, would add more deal breakers for these or other backup systems if you know some more and at the same time, if you have data to disprove some of the deal-breakers listed here (benchmarks, info about something being true for older releases but is fixed on newer releases), please share it so that I can edit this list accordingly.

Bacula (from the Why section on Burp)

  • Too complex to configure
  • Stores catalog separate from backups, need to backup catalog
  • Doesn't deduplicate
  • Relies on clock accuracy
  • Can't resume an interrupted backup
  • Retention policy

Snebu

  • Doesn't do encryption

Obnam

  • Really slow for large backups (from a benchmark between obnam and attic)

Burp

  • Client side encryption turns off delta differencing

Bup

  • Can't purge old backups
  • Doesn't encrypt backups (well, there is encbup)

Tarsnap

  • Slow restore performance on large backups? (Sorry Colin aka cperciva)
  • This was a really strong candidate until I read some comments on HN about the slow performance to restore large backups.
  • If this has changed in a recent version or someone has benchmarks to prove or disprove it, it would be really valuable.

Duplicity

  • Slow restore performance on large backups?
  • This was also a really strong candidate until I read some comments on HN about the slow performance to restore large backups.
  • If this has changed in a recent version or someone has benchmarks to prove or disprove it, it would be really valuable.

backup2l

  • No support for encryption

Arq

  • Just included here because I knew someone would mention it in the comments.
  • It's Mac OS X only. This list is for Linux server backup systems.

Other contenders (of which I don't have references or information)

  • HashBackup
  • ZBackup
  • ZPaq
  • BTRFS send/receive

Also Tarsnap scores really high on encryption and deduplication but it has 3 important cons:

  • Not having control of the server where your backups are stored
  • Bandwith costs make your costs unpredictable
  • The so called Colin-Percival-gets-hit-by-a-bus scenario

Attic has some really good comments on HN and good blog posts, doesn't have any particular deal-breaker (for now, if you have one please share with us), so for now is the most promising.

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