You could do this, probably, but it isn't a supported setup by Mitel and it won't get backed up by the normal MSL backup either, so it would take a bit of work on the Linux command line.
You have to install a CentOS/Redhat compatible ftp service and config it manually via its local config text files and setup a user and home directory. This part would be pretty easy, I'm sure we could find tutorials all over the Internet.
The trick would be getting the backup off the machine with the normal MSL backup process. I am fairly certain when you do a backup, it just runs a script(s) that tar up a bunch of files/directories and gzips them up. The tricky part would be find these scripts and either (a) modify them to include the 3300's home ftp directory or (b) make the 3300's ftp home directory reside somewhere in a path that's already in the backup script. Frankly, both are a little dangerous as long term solutions.
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