sometime early on Friday, the server this blog is hosted on suffered catastrophic data loss. - International Backup Awareness Day

see also

• Do not trust your storage, at all. Fault tolerance, backups, and power protection suitable for the importance of the data… - HN
• How does rsync work?

Rsync / man

• –dry-run - test command without any impact
• -a - archive mode; equals -rlptgoD - preserve ownership and permissions
  • -r - recursive copy
  • -l, –links - symlink are copied with their initial definition (no rellocation)
  • -p, –perms - preserve permissions
  • -t, –times - preserve modification times
  • -g, –group - preserve group
  • -o, –owner - preserve owner (super-user only)
  • -D - preserve special files & preserve device files
• -v - verbose mode

• -P - progress mode

• –partial - keep partially transfered file to avoid relaoding them entirely next time.

• –delete - delete files in DEST directory not present in SRC directory.

• -h - human-readable, output numbers in a human-readable format.

• –remove-source-files - remove source after backup complete

• -L, –copy-links - copy the link target, rather than the symlink.
• -H, –hard-links - link together the corresponding files on the receiving side.

time rsync -ravP /source /backup/

• Linux Admin - Backup and Recovery - tar / rsync / dd
• How to Back Up Your Linux System
• with UI Grsync - was not working properly

Tools

• Timeshift
  • leverage btrfs snapshots
• backintime
• Bup - Efficient file backup system based on the git packfile format / HN
• rdiff-backup
• duplicity / HN

see also

• Make Your Own Backup System – Part 1: Strategy Before Scripts / Part 2 - The Backup Plan: Asking the Right Questions
  • How much risk am I willing to take?
    • A common but risky approach is to store a backup on the same machine that requires backing up.
    • Thus, the initial step is to establish a management plan, balancing security and cost. The safest backup is often the one stored farthest from the source machine. However, this approach introduces challenges related to space and bandwidth
  • What data do I need to protect?
    • The Core Decision: Full Disk vs. Individual Files
    • The Key to Consistency: The Power of Snapshots
    • The Architecture: Push or Pull?
  • What downtime can I tolerate in case of data loss?
  • What type and amount of storage space do I have available?