Seagate Hawk 2 ST12400N User manual

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ST12400N/ND/NC
ST11900N/ND/NC
HAWK 2 Family:
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Installation Guide
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Contents
Introduction ........................................................ 1
Electromagneticinterference ............................ 1
Before you begin ................................................ 2
Installation overview .......................................... 7
Product repair information ................................ 9
Shipping ......................................................... 10
Product repair and return information............. 10
Technical support services ............................... 11
Drive specifications............................................ 14
Initial set-up information.................................... 17
Drive configuration............................................. 23
Drive installation................................................. 33
Drive Setup ......................................................... 37
© 1994 Seagate Technology, Inc. All rights reserved
Publication Number: 77767451, Rev. C.
March 1994
Seagate®,SeagateTechnology®andtheSeagatelogo
areregisteredtrademarksofSeagateTechnology,Inc.
HawkTM, SeaFAXTM, SeaFONETM, SeaTDDTM,
SeaBOARDTM aretrademarksofSeagateTechnology,
Inc.Otherproductnamesareregisteredtrademarksor
trademarks of their own.
Seagate reserves the right to change, without notice,
product offerings or specifications. No part of this
publication may be reproduced in any form without
written permission of Seagate Technology, Inc.

Hawk 2 Family Installation Guide, Rev. C 1
Introduction
Beforeattemptinganyinstallation,pleasereadthrough
all applicable sections of this document, including all
warnings and cautions.
Warning. This equipment generates, uses, and can
radiate radio frequency energy and if not
installedin accordancewith theseinstruc-
tions,maycauseinterferencetoradiocom-
munications.
Electromagnetic interference (EMI) con-
siderations
The drive(s) described herein, as delivered, are de-
signed for system integration and installation into a
suitable enclosure prior to use. As such, the drive(s)
described herein are supplied as a sub-assembly and
arenotsubjecttoSubpartJofPart15oftheFCCRules
and Regulations nor the Radio Interference Regula-
tionsoftheCanadianDepartmentofCommunications.
However,theunithasbeentestedusingpropershield-
ing and grounding and found to be compliant with the
ClassAlimits oftheFCCRulesand the Regulationsof
the Canadian Department of Communications.

2Hawk 2 Family Installation Guide, Rev. C
The physical design characteristics of the drive(s)
described herein, serve to minimize EMI radiation
when installed in an enclosure that provides reason-
able shielding. As such, the drive(s) are capable of
meeting the Class B limits of the FCC Rules and the
RegulationsoftheCanadianDepartmentofCommuni-
cations.
Note. It is the end users' responsibility to assure that
the drive(s)describedhereinmeettheappropri-
ate EMI requirements of their system. Shielded
I/Ocablesmayberequirediftheenclosuredoes
notprovideadequateshielding.IfI/Ocablesare
externaltotheenclosure,shieldedcablesshould
beused,with theshieldsgroundedto theenclo-
sure and to the host controller.
Before you begin
Verify that the system is switched off and discon-
nected from main power before any installation is
attempted.
Protect yourself, the drive, and your valuable pro-
grams and data by reading the following cautions
and warnings.

Hawk 2 Family Installation Guide, Rev. C 3
•Donotunpackdrive fromitsstaticshieldedbaguntil
you are ready to install it in the system.
•Always handle the drive by the frame or casting.
•Do not touch printed circuit board (PCB) or the I/O
connector pins.
•Never apply pressure to the PCB or to the drive top
cover.
•Donottamperwith sealedtopcover.Doingsovoids
your warranty. The drive contains no user service-
able components. See Product Repair section for
moreinformation.
•Visually inspect the shipping container for any obvi-
ous damage.
•Inspectdriveforpossibleshippingdamage.Allclaims
of this type should be filed promptly with the trans-
porterinvolved.Saveoriginalpackingmaterialstobe
used when reshipping.
•When transporting or shipping a drive or system,
please ensure that they are correctly packed in
originalSeagate approved(or equivalent)container
and shipped via an air-ride carrier experienced in
handling computer equipment.
•Verifyallpartslistedonshippingbillarereceivedwith
theequipment. Discrepanciesordamage shouldbe
reported to the shipping company.

4Hawk 2 Family Installation Guide, Rev. C
Caution. Thecircuitassembliesandcomponentscon-
tained in this equipment can be degraded or
destroyedbyElectrostaticOverstress(EOS)
or by Electrostatic Discharge (ESD).
Static electrical charges can accumulate
quickly on personnel, clothing and synthetic
materials.Theelectrostaticfieldsduetothese
charges when brought in close proximity to
susceptible circuit assemblies and compo-
nents, can result in degraded reliability or
immediatefailureof the affectedcomponent
or assembly.
Toinsureoptimumreliableequipmentopera-
tion, it is required that technical support per-
sonnel discharge themselves by wearing a
grounding strap around the wrist and be
connectedtoagroundingterminalwhilework-
inginthevicinityof,andwhilehandlingEOS/
ESDsusceptibleassemblies/parts.Ifunavail-
able,ground yourselffrequently bytouching
the metal chassis of the system before han-
dling any components (this helps only if the
system is connected to a ground). Avoid
static-inducing carpeted areas. This proce-
dure is especially important when handling
printed circuit boards (PCBs).

Hawk 2 Family Installation Guide, Rev. C 5
Safety instructions
1. The disc drive(s) are to be installed in a customer
suppliedenclosurewherethesurroundingairdoes
not exceed 50oC.
2. Four (4) 6-32 UNC-2A screws are required for
installation. Maximum screw length into side of
drive is 0.15 inches (3.81 mm). Maximum screw
lengthintobottomis0.20in.(5.08 mm).Maximum
screw tightening torque is 8.0 in-lb (0.90 NM) with
minimumthreadengagementof0.12in.(3.0mm).
3. Thepower requirementsare showninSection 1.0
ProductInformation.
4. The power supply must satisfy the safety require-
ments for SELV (Safety Extra Low Voltage) cir-
cuits.
5. Service is to be provided by trained Seagate ser-
vice personnel.
6. The incorporation of the disc drives listed in this
guide into a customer enclosure must meet the
appropriate safety requirements of the country in
which it is used (e.g. UL 1950, CAN/CSA-C22.2
No.950-M89,DINVDE0805/05.90andEN60950:
1988 (IEC 950).

6Hawk 2 Family Installation Guide, Rev. C
Sicherheitsanleitung
1. DäsGerätisteinEinbaugerät,vorgesehenfüreine
maximale Umgebungstemperatur von 50oC.
2. Zur Befestigung der Drive werden 4 Schrauben
benötigt (6-32 UNC-2A). Die maximale Länge der
Schrauben in der unteren Seite des Chassis darf
nicht mehr als 0.20 in (5.08 mm) betragen, die in
der oberen 0.15 in (3.81 mm). Maximalle
Schraubenaziehung Von 8.0 in-lb (0.90 NM) mit
minimalem Gewindeansperuch 0.12 in. (3.0 mm).
3. Die Versorgungsspannungen werden im Kapitel
1.0 (Produkt Information) gezeigt.
4. Die Versorgungsspannung muss SELV entspre-
chen.
5. AlleArbeitendürfennurvonausgebildetemSeagate
Service-Personal durchgefürhrt werden.
6. Der Einbau des Drives muss den Anforderungen
gemässDINVDE0805/05.90oderEN60950:1988
(IEC 950).

Hawk 2 Family Installation Guide, Rev. C 7
Installation Overview
Installation of the drive can be divided into distinct
phases as outlined below. Some of these may not be
applicable to your particular installation requirements.
Refer to the individual drive installation sections for
specific information on your drive model.
•Driveconfiguration:Theusermustselectwhichof
thedrivefeaturesareappropriatetoenableforinstal-
lationintheirsystem.Thisisdonebywayoftheuser
configuration jumpers found on the drive PCB.
•Mechanical installation: After setting up the drive
configuration the drive must be mechanically in-
stalled into the host system and the power and
I/O cables attached. Previously mentioned precau-
tions should be observed
•SCSI drives should not be defined in the CMOS:
The SCSI Host adapter has its own BIOS to handle
the Input/output procedures. The CMOS setting for
SCSI drive is either drive type zero, or the "no drive
installed"option.

8Hawk 2 Family Installation Guide, Rev. C
•Low-level formatting: After the drive has been
properly configured for the system, it does not need
to be low-level formatted, as this has been done by
the factory and does not require this step during
installation. (The low-level format writes the sector
boundariesandtrackinformationtothedrive).Defect
managementinformationisreadfromthedrivebythe
host system when required in the installation proce-
dure. If an installed drive is low-level formatted, all
user data stored on the drive will be lost.
Note. SeagateTechnologyassumes noliability for
lost user data.
•Partitioning and high level formatting: A drive
canbesub-dividedinto"partitions"whichbehaveas
individualdriveswithinthesystem.Seeyoursystem
documentation. Present day drive installation pro-
grams have menus that lead you through these
installationprocedures.

Hawk 2 Family Installation Guide, Rev. C 9
Product repair information
Service requirements
The special facilities required for the manufacture of
these drives generally prohibit repair in the field. If
problemsoccurduringinstallation,pleasecontactyour
supplierforassistance.Donotattempttodisassemble
or repair. Drives should be sent to the repair depot
through the purchase source, if possible. Please ob-
serve the following cautions.
Caution.
•Handle drive with care. Do not drop or bump hard.
•Never remove the cover of these disc drives. Serv-
icing items in the sealed HDA (heads, media, actua-
tor,etc.) requirespecial facilities. Thedrive contains
no user purchasable parts or PCBs.
•Opening the sealed HDA voids the drive warranty.
•Applyingasolderingdevicetothecomponentsonthe
PCB voids the drive warranty.

10 Hawk 2 Family Installation Guide, Rev. C
•Place drive on a flat, static dissapative surface and
handle with extreme care. Always follow all EOS/
ESD precautions to avoid damage to he electrical
assemblies.
Shipping: When transporting or shipping a drive, a
Seagateapprovedcontainermustbeused.Keepyour
originalbox. Theyare easilyidentified bytheSeagate
Approved Package label. Shipping a drive in a non-
approved container voids the drive warranty.
Seagate repair centers may refuse receipt of compo-
nents improperly packaged or obviously damaged in
transit.ContactyourAuthorizedSeagateDistributorto
purchaseadditionalboxes.Seagaterecommendsship-
ping by an air-ride carrier experienced in handling
computerequipment.
Product repair and return information
Seagate customer service centers are the only facili-
ties authorized to service Seagate drives. Seagate
does not sanction any third-party repair facilities. Any
unauthorizedrepairortamperingwiththefactory-seal
voids the warranty. Warranty:
Contact your Seagate Authorized Distributor, Dealer
or other purchase source for warranty information.

Hawk 2 Family Installation Guide, Rev. C 11
If the drive is no longer under warranty contact pur-
chasesourceforrepairinformationorrefertonumbers
listed in the following paragraph .
Technical support services
Please contact your dealer for technical support and
installation troubleshooting. Product Technical Sup-
port is available for all Seagate products by calling the
SeaFAX, SeaFONE or SeaBOARD services. These
are toll calls.
SeaFAX:408/438-2620
You can use a Touch-Tone telephone to access
Seagate's automated FAX delivery system and select
technicalsupportinformationbyreturnFAX.Thisserv-
ice is available 24 hours a day, 7 days a week.
SeaFONE:408/438-8222
The enhanced phone system provides recorded tech-
nical information on selected Seagate products while
you are on hold. Technical support specialists are
availabletoanswerquestionsfrom8:00AMto5:00PM
PST, Monday through Friday. Recordings are acces-
sible 24 hours a day, 7 days a week.

12 Hawk 2 Family Installation Guide, Rev. C
SeaTDD: 408/438-5382
TDD is a Telecommunication Device for the Deaf
wheretwo peoplecan communicate usinga keyboard
that is connected to the phone line. A TDD device is
requiredtoaccessthisservice.Thisserviceisavailable
from8:00AMto5:00PMPST,MondaythroughFriday.
SeaBOARD:
TheSeagateTechnicalSupportBulletinBoardSystem
(BBS) is available 24 hours a day, 7 days a week. A
modemisrequiredtoaccessthisservice.Thecommu-
nications software must be set for eight data bits, no
parity and one stop bit (8N1).

Hawk 2 Family Installation Guide, Rev. C 13
With this service you can access:
•Specifications and jumper configurations for all
Seagate products.
•Reprints of Seagate documentation.
•Adirectoryofinformationandhelpfulutilitiesthatyou
can download to your own computer.
BBS Modem Maximum
Location Number Baud Rate
United States 408-438-8771 9600
England 44-62-847-8011 9600
Germany 49-89-140-9331 2400
Singapore 65-227-2217 9600
Australia 61-2-756-2359 9600
Note: These are toll calls

14 Hawk 2 Family Installation Guide, Rev. C
Drive specifications
Product Hawk 2 Family
Information ST12400N/NC ST12400ND
Interface [7] SCSI-2 Fast SCSI-2 Fast
Cache Type Multi-segmented, 256 Kb
Capacity MB
Unformatted 2537 2537
Formatted [1] 2148 2148
Cylinders 2621 2621
Heads 19 19
Sectors/track (Avg.) 84 84
Recording method RLL (1,7) RLL (1,7)
Rev/min 5411 5411
Seek time (ms typ.)[2]
Average Read 9.0 9.0
Write 10.5 10.5
Operating environment
Ambient temp. [4] ------ 5oC to 50oC-----
HDA max temp. [3] -----------60oC----------
Power requirements (Versorgungsspannungen)
+12 V+/-5% (Max [6] 1.0 A 1.0 A
(Max Start) [5] 2.0 A 2.0 A
+5 V +/-5% (Max) [6] 0.8 A 1.0 A
(Max Start) 0.8 A 0.9 A
Power Idle (Typ) 9.0 W 10 W
Oper. (Typ) 11.0 W 12 W

Hawk 2 Family Installation Guide, Rev. C 15
Product Hawk 2 Family
Information ST11900N/NC ST11900ND
Interface [7] SCSI-2 Fast SCSI-2 Fast
Cache Type Multi-segmented, 256 Kb
Capacity MB
Unformatted 2003 2003
Formatted [8] 1700 1700
Cylinders 2621 2621
Heads 15 15
Sectors/track (Avg.) 84 84
Recording method RLL (1,7) RLL (1,7)
Rev/min 5411 5411
Seek time (ms typ.)[2]
Average Read 9 9
Write 10.5 10.5
Operating environment
Ambient temp. [4] ------5oC to 50oC------
HDA max temp. [3] -----------60oC----------
Power requirements (Versorgungsspannungen)
+12 V+/-5% (Max [6] 1.0 A 1.0 A
(Max Start) [5] 2.0 A 2.0 A
+5 V +/-5% (Max) [6] 0.8 A 1.0 A
(Max Start) 0.8 A 0.9 A
Power Idle (Typ) 9.0 W 10 W
Oper. (Typ) 11.0 W 12 W

16 Hawk 2 Family Installation Guide, Rev. C
Notes.
[1] Standard Hawk 2 units are factory formatted with
512databytespersectorwithtwelvesparesectors
per cylinder and 2 cylinders at inner tracks re-
served for spares in addition to capacity listed.
[2] Does not Include on-board controller overhead.
[3] Maximum measured at any location on top cover.
[4] For best reliability keep below 35oC (95oF).
[5] Adroopofupto-10%ispermissibleforamaximum
of 10 seconds at power up. (abfall van -10% is
erlaubt für 10 Sekunden max).
[6] Measured with an average reading DC ammeter.
Instantaneous +12 V current peaks will exceed
these values.
[7] CanbecommandedtooperateaccordingtoSCSI-
1 protocol.
[8] StandardST11900unitsarefactoryformattedwith
512databytespersectorwithsixsparesectorsper
cylinderand2cylindersatinnertracksreservedfor
spares in addition to capacity listed.

Hawk 2 Family Installation Guide, Rev. C 17
Initial setup information
For the initial setup connect the cables, set the SCSI
busaddressandremove,install,orleaveasistheSCSI
I/O line terminator resistor packs. These procedures
aredescribedinparagraphsfollowing.Beforecontinu-
ing, note whether drive model number letter suffix
contains N, ND or NC.
SCSI interface cable connection
Hawk2familymodeldrivesareSCSI interfacedrives.
System connection is via a 50 pin, SCSI connector,
exceptfor"NC"modelswhichhavean80pincombined
SCSII/Oandpowerconnector,Pin1isnotedinFigure
1 for the 50 pin connector. Some cables have a con-
trasting color stripe on one edge to indicate pin 1.
Because of the non-symmetrical shape of the 80 pin
connectorthereisonlyonewaythatitcanmatewiththe
input connector. Strain relief is recommended for the
cable. Donotblocksystemcoolingairflowinroutingof
cables.

18 Hawk 2 Family Installation Guide, Rev. C
SCSI address selection
On "N/ND" drives, make sure that the SCSI bus ad-
dress jumper(s) are properly set for the bus address
assigned to the drive. See figures at beginning of
Section 3 showing the bus address select header and
the jumper configurations that select addresses 0
through7.TypicallytheprimarybootdeviceissettoID
0, and the subsequent SCSI drives are jumpered in
ascendingorder.Busaddresses0through6shouldbe
used (the host adapter usually uses address 7). If the
drive LED shows no on/off activity when the host is
tryingtocommunicatewithit,anincorrectbusaddress
selection at the drive should be suspected.
On"NC"modeldrivestheSCSIIDcanbe,andpresum-
ably will be set over the 80 pin interface by the host
computer.Unlessdirectedto do sobythehostsystem
documentation, no jumpers should be installed for
address selection. On "NC" models, the host has also
complete control over motor start functions, so no
motor start or delayed motor start jumpers should be
installed.