[comp.sys.hp] Unisys WORM drive, how to use it with Vectra & 9000 Cluster ?

nickw@syma.sussex.ac.uk (Nick Watkins) (06/12/90)

I find myself in the position of having to read optical disks written to
a Unisys WORM drive (SD1-WRM) by a Unisys PC, referred to (by USAF I think) as
"Desktop III". I want to make this operation as as transparent as
possible to my main machine, an HP 9000 cluster consisting of an 835
server, 3 diskless 340 clients, and a 340 with an HP 650A rewritable
optical drive ( this last machine is in somebody's office & is thus not a
good way to read disks, it is also not part of the cluster for reasons
recently discussed in this group).
 I plan to read the disks by attaching another Unisys drive to a Vectra QS20
which will then have to be attached somehow to the 9000 to make the
files generally available. My questions are as follows :

1) is there an HP WORM drive compatible with the Unisys SD1 ? If not, is
there a 3rd party drive (Panasonic ?) that is ? We anticipate problems
getting  the drive from Unisys as it is very new & our partners have not
received theirs yet .

2) can the Vectra work with an SCSI WORM drive in general, and with the
Unisys SD1 in particular ? Can it do so under MS-DOS or would we have to
run some form of Unix on it ? 

3) What is the best way to connect a Vectra to a 9000 series network ?
Our scheme is an ethernet card (3com "Etherlink" ?) & an Ethernet line
to our main cluster which is already on the ampus Ethernet. Is this the
best way ?

All replies appreciated, especially those exposing/reducing my ignorance of
things optical & MS-DOS.

Nick
-- 
Dr. Nick Watkins, Space & Plasma Physics Group, School of Mathematical
& Physical Sciences, Univ. of Sussex, Brighton, E.Sussex, BN1 9QH, ENGLAND
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