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=== Resources ===
# [[wp:Category:Free_backup_software]] The most interesting are ## http://en.wikipedia.org/wiki/BackupPC
## http://en.wikipedia.org/wiki/Bacula (which is mostly comparable to Amanda - but uses a non-standard albeit open format)
## http://en.wikipedia.org/wiki/FlyBack which is a nice UI on rsync and aims to mimick the Mac TimeMachine
</source>
shows you what file system types are supported under your currently running kernel
So if you've identified the disks you want to backup, and mounted them, you also need to be aware of the parts you DO NOT want to backup. On a Linux system, the list of EXCLUSIONS would include
* /proc/
* /tmp/
* /sys/
<source lang="bash">
sudo rsync -ravlHz --progress --stats --exclude=/mnt/usbdrive/* --exclude=tmp*** --exclude=/proc/** --exclude=/sys/** --cvs-exclude --dry-run / /mnt/usbdrive/backups/liberty
</source>
I added the --dry-run option in there because you should always test first, and because I do not want anyone blindly copy and pasting this command without testing and tweaking it.
== System Image aka Backups for Disaster Recovery ==
"reduce your kernel's size"
if I want to create a boot floppy, but it doesn't matter if I want to use a boot ISO instead.
== Performance ==
Backing up ~94 GB with MondoRescue to image files with medium compression could still generate around 20 4GB DVD images. That is a lot of data and will take a significant amount of time.
Backup up ~60 GB of data across a USB 1 interface using rsync and -z for compression will take over 1 day. In fact it will take over 10 minutes to generate the file list. My experience was with 874,490 files.
In most backup scenarios, the first backup is the one that takes the most time.
[[Category:Howto]]