Seagate ST251NPR User manual

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I. Host Adaptor Set-Up And Installation
1. Remove the Host Adaptor from the protective covering and pull
the rubber strips from between the connector pins.
2. Set the starting address on the Host Adaptor.
•
CAOOO is the default BIOS address. If there is a board'already
installed at this address in your system, use the jumpers to
change to another addre~s. Refer to Figure 1.
,
3. Zero-Wait-State Enable:
• A two-pin
jumper is provided on the adaptorto enablethezero-
wait-state (OWS) logic for PC XT/AT look-alikes. Performance
can be improved on PC AT systems (and most compatibles)
that support OWS if this jumper is installed. Systems that mon-
itor this line, and cannot support a OWS, will hang during the
boot process or shortlythereafter. Systems known to be unable
to support OWS are Epson Equity 111+, AT&T 6300+/6310 and
IBM 5162-286 XT. Refer to the specific computersystem tech-
nical reference manual. .
4. Connect the logic cable to the adaptor. You may find it easier to
attach the logic cable before you install the host adaptor in the
system. Refer to Figure 3.
• Pin-1 on the Host Adaptor corresponds to pin-1 at the drive
SCSI connector. The logic cable has a contrasting-color stripe
,
to indicate pin-1.
5. Install the adaptor as illustrated and verify it is squarely seated
inthe slot. PC XT-only Installations: Do not useslot numbereight,
which is next to the power supply. See to Figure 3.
6. Ifyou encounterclearance problemswhen running the logiccable
behindthefloppy drive, you may have to loosenthefloppy mount-
ing screws and slide it slightly foward. When the operation is
completed, don't forget to slide the floppy drive back into place
and tighten the screws.
Figure 1: Host Adaptor
The Adaptor BIOS has four possible starting addresses.
CONFIGURATION ADDRESS
N'o Jumpers Installed:
CAOOO (default)
P1ns A-B Shorted:
C8000
4 Pins
C-D Shorted:
CEOOO
I Pins A-B &
C-O Shorted:
DEOOO
j;: I: 1:1 :1:1: 1:1: 1:1:1: I: 1 :1:1:1: I:I: 1:1:1:1 :r+hJ
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SCSI CONNECTOR
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ENABLE
JUMPERS
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II. Drive Configuration And Installation
• Do not unpack a drive until you are ready to install it into a system.
• Always rest the drive on an anti-static pad; neveron an unprotected
hard surface.
• Refer to Figure 3 during installation.
1. Remove the top cover from your system. Retain the screws.
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2. Set the SCSI 10 address on thedrive. Refer to Figure 2. The Host
Adaptor recognizes devices by their SCSI 10 number.
• If you are installing one drive, the 10 number is 0 (no jumper).
• A second physical drive must be set as 10 number 1. Use the
jumper provided.
3. Drive Resistor Termination Packs: If you are installing a single
drive;the resistortermination packs must remain installed. If you
are installing two drives, remove the resistor termination packs
from the first drive.
When installing the resistor termination packs, note that pin-1 is
designated by a dot or numberone on the pack. A square pad on
the
PCB indicates pin-1 at the socket. '
4. Drive mounting Is system dependent. Rails cannot be installed if
a front panel is in place. Remove before installing the rails.
5. Drives are shipped with a half-height, front panel. Determine if
you need to replace it with the full-height panel. Use the same
screws to reinstall the new panel.
6. PC AT installations require a printed circuit cable (PCC) shield
instead of a front panel. The shield protects the printed circuit
cable. Install as illustratedin Figure3usingthefrontpanel screws.
7. IBM PC XT and AT&T 6300 installations require 4, 6-32 x 3/16-inch
panhead screws (packed with the rails). Tighten the screws down
evenlyt08 ±.8inch-lbs. Overtighteningmaycausedrivedamage.
Use only the supplied screws
or a Seagate-approved equivalent.
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8. PC AT, Compaq Oeskpro 286 and Epson Equity'" + installations
requiremounting rails. The railsfastendirectlytothe drive mount-.
ing feet and allow
it to slide into the system chassis.
• For
PC AT installations, use the narrow mounting rails (note
right rail is part number 50324-001 and left rail is 50324-002)
and
4, 6-32 x 3/16-inch panhead screws as supplied.
• For Compaq Oeskpro 286, use the wide mounting rails and 4,
6-32 x 5/16-inch flathead screws as supplied. Note that one rail
has tapped holes to allow fastening to the chassis. Use two of
the 6-32 x.3/16-inch"panhead screws to secure the drive to the
chassis side.
~ Epson Equity '" + and AT&T6310 systems have rails included
with the system. Use these instead of the rails provided.
9. Attach the logic cable assembly to the drive and Host Adaptor.
Pin-1 at the drive must mate with pin-1 at the adaptor. The logic
cable has a contrasting-color stripe which indicates pin-1. It also
has an additional connector at the drive-end to accommodate a
second hard disc drive.
10. Drive DC Power Connection:
• Use the straight power cable assembly (refer to Figure 3) for
Compaq installations. .
• Use the Ny" powercable assembly (referto Figure 3) for PC XT
and AT&T 6310 installations, if two drives are being installed.
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SCSI ID AND
SCSI ID -JUMPERS
PARITY PINS
SELECT THE DESIRED SCSI 10 WITH -JUMPERS.
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INSTALL THE OPTIONAL P--JUMPER TO ENABLE PARITY.
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SCSI ID
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PARITY -JUMPER
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SCSI ID 5
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III. Preparing The Drive For Use
The installation process will low level format new physical blocks on
the entire surface of the drive and will create
DOS compatible parti-
tions, root directories, and file allocation tables.
All drives are shipped
wit~ a small DOS partition containing
INSTALLR.EXE, PARK.EXE and README.
1ST (a 3-page 'printable
suppliment to this installation guide). README.1ST will contain the
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latest installation information for the drive being installed and can be
accessed by
DOS system comrhands: TYPE, COpy or PRINT.
Drives having more than
32 formatted megabytes are shipped with
additional installation software resident, hereafter referred to as Disk
Manager. This software supports multiple
DOS partitions on a single
driveand partitions greaterthan
32 MB. Program execution will begin
automatically.
In addition, a number of reference files (.REF) provide
information concerning the process. These files can be accessed by
DOS system commands: TYPE, COPY or PRINT.
If yourdisc drive has less than
32 formatted megabytes, you need one
DOS bootable diskette that has the boot files from the version of DOS
that you plan to use on your Seagate disc drive. This diskette should
also contain the FORMAT program provided with your
DOS system,
and sufficient space (approximately
50 KB) to save the installation
programsfrom thehard disc. Thisdiskettemustnotbflwriteprotected.
If your disc drive has more than
32 formatted megabytes, you need
two diskettes to
cOJTlpl~te the installation process. The first of these
diskettes need only be
DOS bootable with the version of DOS thatyou
plan to use on your hard disc drive. The second diskette must not be
write protected, and have at least
320 KB of free space to save the
installation and Disk Manager programs.
If you are installing your drive in a
PC AT or compatible machine and
a standard hard drive
is not presently attached or operational, the
hard drive count in CMOS RAM will be set to zero. It is not necassary
tochangetheCMOS RAM harddrivecountwhen installing
SCSI drives.
Ifa standard drive
is already attached and operational in yoursystem,
it will be the first drive and the Seagate
SCSI drive will be the second
drive. TheCMOS RAM harddrivecountshould not includetheSeagate
SCSI disc drive.
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If you are installing a second drive in your system and Disk Manager
is used to install it, it is important that the Disk Manager
driver
(DMDRVR.BIN) is resident on the boot drive and a "device =
DMDRVR.BIW statement js contained in the CONFIG.SYS file on that
drive. Normallythisstatementshouldfollow any"device
=" statement
for the boot drive.
WARNING TO INSTALLERS OF SECOND DRIVES: DOS a88lgns a log-
lcalldentlfler (e.g. C, D, E ••• ) toeach partitionthat It recognizesduring
thebootload. Furthermore, DOS assignsIdentifierstothe first partition
on each physical drive before asslgnfng Identifiers to additional par-
titions. Therefore, Ifyou have a singledrive with three partitions, they
will be assigned C, D and E. However, when the second drive Is In-
stalled,thefirstpartitionon
drive 1 will beassigned C, thefirstpartition
on drive 2 will be assigned D, then E and F will be assigned to the
remaining partitions on drive 1. Any additional partitions on drive 2
then will be aSSigned subaequentldentlflers. Ills Importantto realize
thatthe partitionspreviouslyIdentifiedasDand Ehavechanged when
the second drive Is added.
The PARK program supplied with your drive is used to park the read/
write headsforthe
ST225NPR only. All otherdrivesautomaticallypark
their heads at power-off. For your own protection, you should always
park the read/write heads before your system is transported.
Procedure
1. Place a DOS-bootable diskette in drive A and switch the power
on. If you have correctly installed the drive and adaptor,
ST01
SCSI Host Adaptor Vx.x will be displayed, followed by a screen
prompting you to the next step. Each step
in the process is lead
by screen prompts.
2. Aftertheboot process iscomplete, beginthe installationby typing:
C:INSTALLR
C, or if you are installing a second hard drive,
D:INSTALLR
D.
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3. If you are installing a ST251 NPR/ST277NPR/ST296NPR, you will
be instructed to remove the
DOS diskette and insert the blank
diskettethat will be usedto copy the Disk Managersoftware, here-
after referred to as the Disk Manager diskette.
I If there is a hard drive already installed in the system, and the
ST251NPR/ST277NPR/ST?96NPR is the second drive, you must
copy the DMDRVR.BIN arid CONFIG.SYS files from the Disk Man-
ager diskette to the existing (first) drive. If the CONFIG.SYS file
is resident, simply update it.
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The
driver is supplied only with drives with over 32 megabytes of
formatted capacity. It allows access to more than one partition
per drive and permits access to partitions greaterthan 32 mega-
bytes. The partitioning software will assistyou duringthe remain-
der of the format process with screen prompts.
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Ifyou perfer,youmayusethepartitioningand highlevel formatting
software supplied with your DOS system (FDISK and FORMAT).
If you select this option during installation, the installation soft-
ware will perform a low level format of your drive surface before
exiting to DOS.
4. The entire routine is menu-driven and takesfrom ~en tothirty min-
utes, depending on drive size. After the format is complete the
read/write heads will be parked. At th,e next power-upthe system
will boot from the hard disc if the diskette is
nOt ready.
IV. Problem Determination
If you have a problem getting the initial screen or later getting the
system to boot:
• Check logic cabling between the Host Adaptor and the drive: Pin-1
l,
on the adaptor corresponds to pin-1 at the drive. The contrasting
color strip on the cable should be attached to pin-1 .
• Check the power cable on the drive. When power is applied, you
should be abletofeel and hearthe
drive motor. Afterafew seconds,
you should hear the head actuator cycle several times. This indi-
cates that the drive is performing a self diagnostic.
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• Verify correct SCSI 10 address at the drive. The first drive should
be configured as 100, and the second as
10 1. See Figure 2.
• If the "Adapter Self-Test Failed" message is displayed, verify that
the last (or only) drive on the SCSI cable has terminating resistors
installed.
• Verify correct BIOS address: If you have more than one disc, tape
or other controller that uses BIOS ROM space, each must be con-
figured to operate at different memory addresses. Addressing mul-
tiplecontrollers at the same memory locations can cause problems
of a seemingly indeterminate nature. If you suspect that you have
this type of problem, turn off the power to you computer, remove
the Host Adaptor and change the pin jumpers setting illustrated in
Figure
1, then try again.
• Verify zero-wait-state (OWS) jumper setting. The jumper is illus-
trated in Figure
1. A performance increase can be obtained in AT
class systemsthat properlysupportOWS (e.g. IBM PC AT) iftheOWS
jumper is installed on the ST01. However, problems can arise in AT
compatible systems from having the jumper installed if OWS is not
supported inthesamewayastheIBM PC AT. Ifyou areexperiencing
problems during booting or subsequent operation, remove the
jumper. The jumper has no affect on XT class systems (except IBM
XT-286).
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• If you experience problems accessing you DOS partition after in-
stallation, referto the file DM.REF for additional information regard-
ingdeviationsin hardwareand DOS systemsfrom varioussuppliers.
• For additional installation help call Seagate at 1-800-468-DISC
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,i V. Messages
The following messages may be displayed on the screen by the Host
Adaptor:
1. Adaptor selftest failed (see problem determination.)
2. Mode Sense error
l,. 3. Bad Adaptor RAM (replace ST01 Host Adaptor)
4. No SCSI hard discfound. Check cables and power connections.
5. Inquiry error
6. SCSI bus parity error (check data cables)
7. Disc prepared for shipping (i.e., heads parked.)
II 12
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