Disk archival techniques

[John Allain]

With all this talk about archiving and live media storage I 
just flashed back again to the 80's and the seemingly lost
concept of a Read-Only hard drive.  This would be great
for virus proofing long-term data today.  Anybody know of
an add-on hack for IDE or SCSI that will do this?  Envisioned
is a ribbon cable with a line or two cut but I imagine if it was
that simple people would already make them.

John A.