hawk
i have never done a backup to usb, will try figure it out and get back to you
It should be very easy to do.
Just make sure your USB drive is formatted ext3/4.
It would be good to use a standard type of drive eg Western Digital Book style etc rather than a special drive in a USB case etc.
It would also be good to know that it works with sme server OK.
Connect the drive & check with
fdisk -l
Then just run Backup to workstation & select the local USB disk option, the drive name should be displayed & be selectable.
All the rest should be straightforward to understand, nothing tricky.
Note, the first run of a full backup will take a long time (many many hours) if you have a lot if data eg 500Mb or more, also depending on other factors eg USB port speed, drive speed, compression settings (higher compression settings are usually slower), type of data files being backed up (ie already compressed format or not) etc