over 5 rooms. From my point of view, the software is
the most important,
although
that fits on no more than a few DVDs and CDs, as well as an on-line copy
that should
certainly fit on the 1 TB drive in the PC - I run RT-11 under Ersatz-11
these days.
That is why I have multiple copies of my website spread around with
friends, and usually rip interesting (but of dubious future) sites. If the
worse happens, the knowledge goes on.