🚀 go-pugleaf

Hello !

We are about to purchase a Fujitsu Disk M2652SA (around 2 GB unformatted/
1.6 GB formatted). Will this drive work in A DEC System 5500 ?

It won't be the system disk, it will contain only user data.

I think Ultrix V4.2A has no problems with SCSI disk with more
than 1 GB capacity, correct ? Correct ! I just found lot's of disk
types with more than 1 GB capacity in the 'ultrix-disktabs' file from
gatekeeper.dec.com's FTP archive.

Synchronous negotiation might be a problem, but might not as
there is Fujitsu's M2266SA listed in 'ultrix-disktabs' with the
following comment:
	open switch 15-16       let host initiate SCSI sync mode

Mounting: it would be nice to have the disk (5 1/2 inch form factor)
mounted in the BA 430 enclosure of the DS 5500 just besides the RF72.
Are the neccessary mounting parts purchasable standard DEC parts ?

NB: is seems that the back panel behind the disk slots carries
power and DSSI signals and SCSI signals. As far as I have looked
into the disk slots, both the DSSI controller cable and the SCSI
controller cable are connected to that back panel. The Operation
Manual talks about DSSI RF-series ISEs (ISE = Integrated Storage Element)
in the same way as SCSI RZ-series ISEs. It also says (mounting problem
above): 'Special mounting hardware allows the device to plug directly
into the BA400-series backplane'.

  Joerg
-- 
Mail: Joerg.Lehners@arbi.Informatik.Uni-Oldenburg.DE
Path: ...!uunet!unido!uniol!lehners   Inhouse-Mail: aragorn!joerg
Real: Joerg Lehners, FB 10 Informatik ARBI, Uni Oldenburg, D-2900 Oldenburg