re-debianize thecus n2100

[Markus Kreiner <markuskreiner@gmx.net>]

dumb question from (still) a linux-noob:

i've had debian installed on my thecus n2100 (think it's been squeeze
yet) - but had to rip out the disks as i urgently needed them
somewhere else, of course without having created an image before :( so
now - new disks put in - the thecus-tool doesn't recognzie it and i
can't get no ssh-acces as well of course.. so what would be the best
practice to get debian back running? do i need a serial-console?

thanks for any advice.