My question is about which file system format to format the drive as. My understanding is that HyperBackup would create a backup that was not readable by plugging the drive into a Mac. I know there are lots of options out there, such as using HyperBackup etc, but I would like to use USB Copy because I would like to be able to plug this external drive into my Mac and have access to all the files that are stored on it (a copy of what is stored on the DS). Currently there are about 380GB of files on the DS.
I am going to be using it with a DS215j to backup a 2TB mirrored array using USB Copy. I am looking for recommendations on what file system format to use for an external USB drive.