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→Backup disk size limits workaround
===Backup disk size limits workaround===
===Backup disk size limits workaround===
{{Warning box|The method described here permits to get daily backup work on a support with not enough space to do a new daily full backup without, before, deleting the current backup. So it must be considered with caution : if the backup fails, you'll be whithout any backup available. As explained, use this method only if security of your data is not essential, or buy a larger disk for storage.}}
If having issues with the size of removable backup disks (eg 120Gb IDE on a workstation) versus the resultant backup data size (eg 120Gb of data compressing to approx 50Gb), then you can manually setup a cron job to delete the old backup file(s) before saving the new backup file(s).
If having issues with the size of removable backup disks (eg 120Gb IDE on a workstation) versus the resultant backup data size (eg 120Gb of data compressing to approx 50Gb), then you can manually setup a cron job to delete the old backup file(s) before saving the new backup file(s).
To workaround this, create a cron job and put it in /etc/cron.d with a script in /opt/scripts/XXX, which mounts the drive and deletes the old backup just before the new full backup commences.
To workaround this, create a cron job and put it in /etc/cron.d with a script in /opt/scripts/XXX, which mounts the drive and deletes the old backup just before the new full backup commences.
This will delete the old backup before the new backup commences, which is different to how the backup is designed to work by default. It is necessary to forgo the security of retaining the old backup until the new one has completed, in order to use the available hardware (smaller disk).
This will delete the old backup before the new backup commences, which is different to how the backup is designed to work by default. It is necessary to forgot the security of retaining the old backup until the new one has completed, in order to use the available hardware (smaller disk).