[Ilugc] Re: HDD Lost Interrupt
- From: siva@xxxxxxxxxxx (Sivasankar Chander)
- Date: Wed Jul 21 17:55:40 2004
What would be the simplest way to make a backup of recent files without
duplicating earlier backups on a cd? That looks like the only real
insurance and warranty for such systems.
Do a Google search for 'rsync crontab snapshot backup' or similar; there
is a how-to somewhere on the web that describes how to set up rsync for
unattended incremental backups, either to another local hard disk or
to another system on the network, without any manual intervention.
You will need approximately 2x hard disk space for the backup snapshots,
regardless of the number of rotating snapshots (hourly, daily, weekly, ...)
that you want to maintain (this is diff/xdelta magic).
I sometimes do this with 2 local hard disks: An active boot/root disk
(/dev/hda) and another exclusively for the backup snapshots (/dev/hdb).
The 2nd hard disk is twice the size of the directory tree that needs to
be backed up (usually only /home/..., but there's no real limitation).
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