The handbook has a good primer on backing up FreeBSD using dump, tar and cpio at:
http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/backup-basics.html
Given the slow speed of USB 1.0 and assuming you are backing up a relatively large amount of data, you might want to try compressing your backup so that it does not take up so much space and therefore is able to made faster.
A full dump backup of the /usr directory or slice is certainly advisable. You could do a compressed dump backup via:
dump -0uan -f - /usr | gzip > /volume_to_backup_to/usr_backup_date.gz
If needed, you can then do this to all of the primary volumes/slices on your system (look at fstab if you aren't sure which are primary slices).
You would need to use piping to restore the backup, though and that can get tricky if your new system that you need to restore the data to isn't sized the same as the old and isn't using the same version of dump. Considering the potential problems associated with dump, I still prefer it because I have never had problems using it myself.
Another option is to use tar, but I rarely use it to make a compressed backup, so someone else might be more helpful with syntax. (man tar would also be helpful)
HTH, Steve Fettig
Richard Beyer wrote:
We're currently doing a back up of a FreeBSD 4.9 (2) server by plugging a USB external drive in and then doing
cp /dev/ad0 /dev/da0
This takes about 30 hours, (USB 1).
Is this the best way to do it, or can someone suggest a better way. We'd rather not have the server offline while we do it.
Cheers,
Richard
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