If your RocHard has SCSI, then you're set. Many RocHards are IDE only, so check that before doing anything else.
1) no reason why not, unless the RocHard's SCSI implementation is hideously broken (not the case as far as I know)
2) no drivers, you can use a mountlist/dosdriver or just prep the Jaz disks with hdtoolbox
3) possible ever since ks 1.3
4) you can use what ever FS you want
5) yes
You can't really damage the machine by connecting a SCSI device to the HD controller, but of course if you don't know enough it's always good to be cautious.
