Thread: files sync

hello,

have case - work big company strict firewall rules applied. reason, there not data backup procedure means supposed take care own corporate data. used using external hard drives, however, it's not solution anymore number of reasons.

questions:

1) there way sync data on internet remote host?
2) possible make scheduled - let's twice day?
3) initially, copy data 1:1 on work laptop , remote host , when run sync tool, sync changes only, not data.

so, help?

posted femmefatale

1) there way sync data on internet remote host?

linux has wonderful utility called rsync. works copy (cp), but:

• rsync clever enough copy has changed, rather entire files. so, if change 20 bytes of 3gb file, rsync transfer 20 bytes plus changed timestamp. can compress data before sending make better use of bandwith.
• rsync (if request it) delete files on target if have been deleted on source. means have exact copy of source. use --archive option.
• the "r" stands remote: able connect rsync daemon running remotely. believe rsync can perform task either sending or receiving machine. (you not have have remote rsync daemon if can access remote folder directly via network.)

posted femmefatale

2) possible make scheduled - let's twice day?

yes. schedule cron or anacron, whichever more appropriate task.

posted femmefatale

3) initially, copy data 1:1 on work laptop , remote host , when run sync tool, sync changes only, not data.

no problem. rsync pick left off. in fact, can use rsync instead of cp initial backup; rsync compress data before sending on network.

bonus tip: if want make backups archives, use rdiff-backup. uses rsync efficiently transfer data, creates incremental backups. have used rdiff-backup years , has never failed me.

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