Backup

How?

List of backup software.

Attic

• https://attic-backup.org/

Maybe best to consider its fork instead: BorgBackup.

BackupPC

See BackupPC.

BorgBackup

See BorgBackup.

Borg is actually a fork of Attic.

• Reddit post

With interesting comments, config... Also mention cloud solution rsync.net with support for Borg/Attic and ZFS.

Bup

See Bup.

Burp

See Burp.

First impressions

• Protocol 1 appears fast, but doesn't do cross-client deduplication. Protocol 2 is still experimental, and is very slow.

Obnam

• https://obnam.org/

Tutorial, manual.

Reviews

• What is the expected performance of obnam? Or: why is it so slow?

Pros

• Can be tuned to make it much faster (up to 10x, with extra memory though) [1]

Cons

• Slow with small files [2]
• Very slow, in particular large backup [3], [4].

SimpleSnap

SimpleSnap is a tool to backup ZFS snapshots easily.

Pros:

• Very fast snapshot (25s).

Cons

• Requires ZFS
• Not cross-machine deduplication.

Speed seems very interesting. But how setup ZFS? Maybe some hints in this benchmark from same author.

UrBackup

See UrBackup.

Looks promising. Server-centric like BackupPC.

Pros

• Consistent backup using snapshots!

Snapshots created with dattobd or LVM snapshot on Linux, and VSS (Volume Shadow Copy Service) on Windows.

Cons

• Does not support storing repo on Samba FS (because create symlinks). But this can be fixed by using NFS.

Other

• Amanda
• Bacula
• Backupninja
• brackup
• Duplicity
• rdiff-backup (review)
• rsync (Optimal remote backups with rsync over Samba)
• ZBackup
• S3QL

Tools and features

dattobd

Datto Block Driver is a kernel module for taking block-level snapshots and incremental backups of Linux block devices.

Other

• LVM snapshots
• Windows Volume Shadow Copy Service (VSS)

How well?

List of backup reviews:

• 5 Awesome Open Source Backup Software For Linux and Unix-like Systems (November 6th, 2014)

Review Bacula, Amanda, Backupninja, Backuppc, and UrBackup. Also cite Rsnapshot, rdiff-backup, Burp, Duplicity, SafeKeep, DREBS.

• Comparison of Attic vs Bup vs Obnam (March 31, 2015)

Attic wins hands down on big data set for backup, and in all cases for restore (much much faster).

• bup vs attic silly benchmark

Both looks similar. Attic a bit faster.

• Synchronization and backup programs

Compare features of many different backup software. See also update from User:Level323.

• Compare Borg to *

Issue tracker on Borg to compare it with alternatives.

• Roundup of remote encrypted deduplicated backups in Linux

Mainly compare Obnam and Attic/Borg.

• Research on deduplicating disk-based and cloud backups

Compare ext4, S3QL, SDFS, zfs-fuse (fastest).

• Backup on freehackers.org

Very long list of backup software with Pros and Cons.

What?

A backup checklist.

On Linux

• /home directory
• /etc directory
• /usr/local directory
• /root directory

In addition:

• Get a copy of crontab (although they are in /var. For each user:

crontab -l

• Copy all mysql database (although they are in /var and /etc.

sudo su -
mysqldump -u root -p --all-databases > mysql-$hostname.dump