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From: spear_r@apollo.HP.COM (Robert Spear)
Newsgroups: comp.sys.apollo
Subject: disk drives on older dn550's
Message-ID: <4c83caab.20b6d@apollo.HP.COM>
Date: 30 Aug 90 20:38:00 GMT
Sender: root@apollo.HP.COM
Distribution: usa
Organization: Hewlett-Packard Apollo Division - Chelmsford, MA
Lines: 10

Older dn550's used the st506 interface and you had the choice of a
disk/tape or dual disk configuration.  If you e-mail me with
the type of disk you have to install, I will give you the jumper
setting for the controller board and the disk drive.  Try to
get one of the following disks:  Micropolis 1304, Micropolis 1325,
Vertex v185, or the Maxtor xt-2190.  You must get a drive of the same 
capacity as the primary drive.  You will also need another disk
mounting bracket, screws, interface cable # 3577 and disk control
cable # 3090.  The power cable harness is already in the mass
storage unit.