User`s manual

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Chapter G - GDT User's Manual
G. Using SCO UNIX V/386
After having explained in chapters B and C the installation of the GDT controller as well as
that of the host drives, we would now like to give you a few hints regarding the installation
of the operating systems
SCO UNIX V/386 3.2v2.0, 3.2v4.x, 3.2v5.x
(Open Server)
For a successful installation it is essential to read the SCO system manuals thoroughly.
G.1 Transparency of Host-Drives
The way in which GDTSETUP has installed the host drives, consisting of SCSI hard disks or
removable hard disks (in chapter C), is not known to UNIX. The operating system does not
recognize that a given host drive consists of a number of hard disks and/or removable hard
disk drives which have been linked in a particular manner. To UNIX this host drive simply
appears as one single SCSI hard disk. The significance of this complete transparency is
amazing if you consider that you can upgrade the GDT controller further with
RAIDYNE
(if
not installed already), which enables you to install fault-tolerant host drives, i.e. RAID 5,
and to operate them in the easiest manner under UNIX; neither UNIX nor the PCI computer
need to be involved in the administration of these very complex constructions.
G.2 General Tips for Installation
Following, we shall explain step by step the installation of SCO UNIX V/386 3.2v2.0, 3.2v4.x
and 3.2v5.x in connection with the GDT controller. Beside the SCO UNIX floppy disks and
the SCO UNIX documentation you also need the GDT floppy disks
GDT SCO UNIX CUSTOM-Disk
for 3.2v2.0 or
GDT SCO UNIX BTLD-Disk
for 3.2v4.x, 3.2v5.x
for the installation. The first disk may be downloaded from our BBS, the second is delivered
with the controller. In the following discussion, when we speak of a boot drive we refer to the
drive which is first integrated upon system power up. For the GDT controller this drive is
the first host drive in the list of GDT host drives, i. e. the host drive number 0 (see
GDTSETUP menu Configure Host-Drives). During the installation you will have to decide
whether you want the GDT controller to make the boot drive available, or whether you want
to operate the GDT controller as an additional controller in the computer system.
If the GDT controller is the only hard disk controller in the computer system, it will auto-
matically make the boot drive available. If there are more hard disk controllers, the con-
troller which makes available the first drive (the drive containing the MS-DOS partition C:)
will be the boot controller. If the GDT controller makes the boot drive available, you can
skip the following paragraph.
G.3 SCO UNIX System V/386 3.2v2.0
In principle, SCO UNIX is always installed on the hard disk with Target ID 0 and LUN 0 on
host adapter 0, that is on host drive 0 of this controller. If SCO UNIX is installed from tape
(streamer), the streamer must have SCSI ID 2 and has to be connected with SCSI channel A
of host adapter 0. This installation requires an already running SCO UNIX 3.2v2.0 system.