Seagate Computer Drive ST11900W WD WC User Guide

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HAWK 2 Family:  
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(Wide Bus)  
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ST12400W/WD/WC  
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ST11900W/WD/WC  
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Installation Guide  
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Hawk 2 (Wide bus) Family Install 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  
installed in accordance with these instruc-  
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, the unit has been tested using proper shield-  
ing and grounding and found to be compliant with the  
Class A limits of the FCC Rules and the Regulations of  
the Canadian Department of Communications.  
 
2
Hawk 2 (Wide bus) Family Install 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) described herein meet the appropri-  
ateEMIrequirementsoftheirsystem.ShieldedI/  
O cables may be required if the enclosure does  
not provide adequate shielding. If I/O cables are  
externaltotheenclosure,shieldedcablesshould  
be used, with the shields grounded to the enclo-  
sure and to the host controller.  
 
Hawk 2 (Wide bus) Family Install Guide, Rev. C  
3
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.  
• Do not unpack drive from its static shielded bag until  
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.  
• Do not tamper with sealed top cover. Doing so voids  
your warranty. The drive contains no user service-  
able components. See Product Repair section for  
more information.  
• Visually inspect the shipping container for any obvi-  
ous damage.  
 
4
Hawk 2 (Wide bus) Family Install Guide, Rev. C  
• Inspectdriveforpossibleshippingdamage.Allclaims  
of this type should be filed promptly with the trans-  
porterinvolved.Saveoriginalpackingmaterialstobe  
used when reshipping.  
• Verifyallpartslistedonshippingbillarereceivedwith  
the equipment. Discrepancies or damage should be  
reported to the shipping company.  
• When transporting or shipping a drive or system,  
please ensure that they are correctly packed in  
original Seagate approved (or equivalent) container  
and shipped via an air-ride carrier experienced in  
handling computer equipment.  
Caution. The circuit assemblies and components  
contained in this equipment can be de-  
graded or destroyed by Electrostatic Over-  
stress (EOS) or by Electrostatic Discharge  
(ESD).  
Static electrical charges can accumulate  
quickly on personnel, clothing and synthetic  
materials. The electrostatic fields due to  
these charges when brought in close prox-  
imity to susceptible circuit assemblies and  
components, can result in degraded reliabil-  
ity or immediate failure of the affected com-  
ponent or assembly.  
 
Hawk 2 (Wide bus) Family Install Guide, Rev. C  
5
To insure optimum reliable equipment op-  
eration, it is required that technical support  
personneldischargethemselvesbywearing  
a grounding strap around the wrist and be  
connected to a grounding terminal while  
working in the vicinity of, and while handling  
EOS/ESD susceptible assemblies/parts. If  
unavailable, ground yourself frequently by  
touching the metal chassis of the system  
before handling any components (this helps  
only if the system is connected to a ground).  
Avoid static-inducing carpeted areas. This  
procedureisespeciallyimportantwhenhan-  
dling printed circuit boards (PCBs).  
 
6
Hawk 2 (Wide bus) Family Install Guide, Rev. C  
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  
length into bottom is 0.20 in. (5.08 mm). Maximum  
screw tightening torque is 8.0 in-lb (.90 NM) with  
minimum thread engagement of .12 in. (3.0 mm).  
3. The power requirements are shown in Section 1.0  
Product Information.  
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).  
 
Hawk 2 (Wide bus) Family Install Guide, Rev. C  
7
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  
Schraubenanziehung von 8.0 in-lb. (.90 NM) mit  
minimalen Gewindeansperuch .12 in. (3.00 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).  
 
8
Hawk 2 (Wide bus) Family Install Guide, Rev. C  
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.  
Drive configuration: The user must select which of  
thedrivefeaturesareappropriatetoenableforinstal-  
lation in their system. This is done by way of the user  
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.  
 
Hawk 2 (Wide bus) Family Install Guide, Rev. C  
9
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.  
Partitioningandhighlevelformatting:A drivecan  
be sub-divided into "partitions" which behave as  
individual drives within the system. See your system  
documentation. Present day drive installation pro-  
grams have menus that lead you through these  
installation procedures.  
 
10 Hawk 2 (Wide bus) Family Install Guide, Rev. C  
Product repair information  
Service requirements  
The special facilities required for the manufacture of  
these drives generally prohibit repair in the field. If  
problemsoccurduringinstallation,pleasecontactyour  
supplier for assistance. Do not attempt to disassemble  
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.) require special facilities. The drive contains  
no user purchasable parts or PCBs.  
• Opening the sealed HDA voids the drive warranty.  
• Applyingasolderingdevicetothecomponentsonthe  
PCB voids the drive warranty.  
 
Hawk 2 (Wide bus) Family Install Guide, Rev. C 11  
• Place drive on a flat, static dissipative surface and  
handle with extreme care. Always follow all EOS/  
ESD precautions to avoid damage to the electrical  
assemblies.  
Shipping: When transporting or shipping a drive, a  
Seagate approved container must be used. Keep your  
original box. They are easily identified by the Seagate  
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. Contact your Authorized Seagate Distributor to  
purchaseadditionalboxes.Seagaterecommendsship-  
ping by an air-ride carrier experienced in handling  
computer equipment.  
Product repair and return information  
Seagatecustomerservicecentersaretheonlyfacilities  
authorized to service Seagate drives. Seagate does  
not sanction any third-party repair facilities. Any unau-  
thorized repair or tampering with the factory-seal voids  
the warranty.  
Warranty: Contact your Seagate Authorized Distribu-  
tor, Dealer or other purchase source for warranty  
information.  
 
12 Hawk 2 (Wide bus) Family Install Guide, Rev. C  
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,SeaTDDorSeaBOARDservices.  
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.  
 
Hawk 2 (Wide bus) Family Install Guide, Rev. C 13  
SeaTDD: 408/438-5382  
TDD is a Telecommunication Device for the Deaf  
where two people can communicate using a 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).  
 
14 Hawk 2 (Wide bus) Family Install Guide, Rev. C  
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  
Number  
Maximum  
Baud Rate  
9600  
9600  
2400  
Location  
United States  
England  
Germany  
Singapore  
Australia  
408-438-8771  
44-62-847-8011  
49-89-140-9331  
65-227-2217  
61-2-756-2359  
9600  
9600  
Note: These are toll calls  
 
Hawk 2 (Wide bus) Family Install Guide, Rev. C 15  
Drive specifications  
Product  
Hawk 2 family (wide)  
Information  
Interface [7]  
ST12400W/WC ST12400WD  
SCSI-2 Fast  
SCSI-2 Fast  
Cache Type  
Capacity MB  
Unformatted  
Formatted [1]  
Cylinders  
Multi-segmented, 256 Kb*  
2537  
2148  
2621  
19  
2537  
2148  
2621  
19  
Heads  
Sectors/track (Avg.)  
Recording method  
Rev/min  
84  
RLL (1,7)  
5411  
84  
RLL (1,7)  
5411  
Seek time (ms typ.) [2]  
Average  
Read  
Write  
9.3  
10.8  
9.3  
10.8  
Operating environment  
Ambient temp. [4]  
HDA max temp. [3]  
------ 5oC to 50oC-----  
-----------60oC----------  
Power requirements (Versorgungsspannungen)  
+12 V+/-5% (Max [6]  
(Max Start) [5]  
+5 V +/-5% (Max) [6]  
1.0 A  
2.4 A  
1.0 A  
9.0 W  
12.1 W  
1.0 A  
2.4 A  
1.2 A  
10.8 W  
14.6 W  
Power Idle  
(Typ)  
Oper. (Typ)  
*Optional 1 MB  
 
16 Hawk 2 (Wide bus) Family Install Guide, Rev. C  
Product  
Hawk 2 family (wide)  
Information  
Interface [7]  
Fast  
ST11900W/WC ST11900WD  
SCSI-2 Fast  
SCSI-2  
Cache Type  
Capacity MB  
Unformatted  
Formatted [1]  
Cylinders  
Multi-segmented, 256 Kb*  
2003  
1700  
2621  
15  
2003  
1700  
2621  
15  
Heads  
Sectors/track (Avg.)  
Recording method  
Rev/min  
84  
RLL (1,7)  
5411  
84  
RLL (1,7)  
5411  
Seek time (ms typ.) [2]  
Average  
Read  
Write  
9.3  
10.8  
9.3  
10.8  
Operating environment  
Ambient temp. [4]  
HDA max temp. [3]  
------5oC to 50oC------  
-----------60oC----------  
Power requirements (Versorgungsspannungen)  
+12 V+/-5% (Max [6]  
(Max Start) [5]  
+5 V +/-5% (Max) [6]  
Power Idle (Typ)  
Oper. (Typ)  
1.0 A  
2.4 A  
1.0 A  
9.0 W  
12.1 W  
1.0 A  
2.4 A  
1.2 A  
10.8 W  
14.8 W  
*Optional 1 MB  
 
Hawk 2 (Wide bus) Family Install Guide, Rev. C 17  
Notes.  
[1] Standardunits arefactoryformattedwith512data  
bytes per sector. ST12400 OEM standard models  
have twelve spare sectors per cylinder and 2  
cylinders at inner tracks reserved for spares. The  
model ST11900 has six spares per cylinder and 2  
spare cylinder per unit.  
[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 von -10% ist  
erluabt 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.  
 
18 Hawk 2 (Wide bus) Family Install Guide, Rev. C  
Initial setup information  
For the initial setup connect the cables, set the SCSI  
bus address and enable or disable (as required by  
system configuration), the SCSI I/O line terminator  
resistors (model "W" drives only). Note whether the  
drive model number ends in W, WC or WD. These  
procedures are described in paragraphs following.  
SCSI interface cable connection  
The drives covered by this manual are SCSI interface  
drives. For "W" and "WD"" models, system connection  
is via a 68 pin, SCSI connector. For "WC" models  
system connection is via an 80 pin SCSI connector.  
Normally "WC" models plug directly into a PCB or  
bulkhead mounted mating 80 pin connector. Pin 1 is  
noted in Figures 1a and 1b. Some cables have a  
contrasting color stripe on one edge to indicate pin 1.  
TheI/Oconnectoriskeyedbyvirtueofitsshape. There  
is only one way it can mate with the mating input  
connector.Strainreliefisrecommendedatthecablefor  
drives using cables. Do not block system cooling air  
flow in routing of cables.  
DC Power connection  
Model ST12400W/WD family drives receive DC power  
through a 4 pin connector mounted on the PCB next to  
the SCSI I/O connector. See Figure 1.  
 
Hawk 2 (Wide bus) Family Install Guide, Rev. C 19  
J1  
J1-Auxiliary  
Pin Power  
1P +12V  
2P +12V ret  
3P + 5V ret  
4P + 5V  
4P 3P 2P 1P  
DC Power  
68 Pin SCSI I/O  
Connector  
Connector  
Figure 1. DC power connection, 68 pin SCSI I/O  
connector  
Model ST12400WC model drives receive power from  
the host computer through the 80 pin combined SCSI  
I/O and power connector (not shown, since a separate  
DC power cable not required). No separate DC power  
connector is provided on the drive.  
SCSI address selection  
On "W" and "WD" model drives, make sure that the  
SCSIbusaddressjumperplugsareproperlysetforthe  
bus address assigned to the drive. In some systems, a  
cableplugsintoeitherJ6orJ1auxiliary, sodriveIDcan  
be set at some remote location. See figures 3a and 3b  
showingthebusaddressselectheaderandthejumper  
configurations that select addresses 0 through 15.  
Typically the primary boot device is set to ID 0, and the  
subsequent SCSI drives are jumpered in ascending  
order. Bus addresses 0 through 14 should be used  
(the host adapter probably uses address 15).  
 
20 Hawk 2 (Wide bus) Family Install Guide, Rev. C  
If the drive LED shows no on/off activity when the host  
is trying to communicate with it, an incorrect bus  
address selection at the drive (or remote ID select  
location) should be suspected.  
On"WC"modeldrivestheSCSIIDcanbeandpresum-  
ably will be, set over the 80 pin interface by the host  
computer. Unless directed to do so by the system  
documentation, no jumpers should be installed for  
address selection. On "WC" model drives, the host  
system also has complete control over motor start  
functions, so no Motor Start or Delayed Motor Start  
Jumpers should be installed.  
Terminator resistor packs  
ModelST12400WfamilydriveshaveI/Olineterminator  
resistors that are permanently installed, but can be  
enabled or disabled by jumper plug. See jumper in  
Figure 3a. If you are installing a single drive, the  
terminator resistors must remain enabled. If you are  
installingmultipleharddiscdrives,disablethetermina-  
tion resistors from all the drives but the one connected  
to the end of the SCSI I/O cable.  
 
Hawk 2 (Wide bus) Family Install Guide, Rev. C 21  
Model numbers that end in "WD" have differential I/O  
circuits and these drives and "WC" mode drives have  
no provisions for terminators on the drive PCB. The  
system manufacturer must provide some external  
means of I/O line termination. The ST12400W/WD  
drives can provide power for external terminators if the  
TP jumper is installed on the last position on the right  
end of J2. See Figure 3a.  
Read/Write head auto-park  
Seagatediscdrivesdescribedhereinmentionedinthis  
drive park the heads automatically at power off. This  
feature requires no operator intervention.  
Optional parity bit enable  
Some systems require parity bit checking. Consult the  
system documentation for the specific requirements.  
See Figure 3a for location of Parity Bit enable jumper.  
Jumper-installed enables parity reporting by the SCSI  
bus.  
Write precompensation and reduced write  
current  
NotrequiredonSeagateSCSIInterfacedrivescovered  
by this manual.  
 
22 Hawk 2 (Wide bus) Family Install Guide, Rev. C  
J1-DC Power  
Pin 1P  
J1-Auxiliary  
Pin 1A  
J1 Pin 1  
J2  
68 Pin  
SCSI I/O  
Connector  
J6  
Figure 2a. Hawk 2 family ST12400W/WD model I/O con-  
nection 68 pin SCSI I/O and DC power con-  
nector). Terminators are not provided.  
J2  
80 Pin  
SCSI I/O  
and DC Power  
Connector  
Pin 1  
J6  
Figure 2b.Hawk2familyST12400WCmodeldrivephysi-  
cal interface (80 pin SCSI I/O and DC power  
connector). Terminators are not provided.  
 
Hawk 2 (Wide bus) Family Install Guide, Rev. C 23  
Drive configuration  
Eachdiscdrivehasoptionselectheaderconnectorson  
the back, side and front where jumper plugs are in-  
stalled to select the way that the drive is to be config-  
ured and to select its ID (0 - 15) on the I/O bus. See  
notes following Figure 3b.  
ST12400W/WD family 68 pin SCSI I/O drives  
OnHawk2family,W/WDmodeldriveseitherJ6(onthe  
front of the drive) or J1-auxiliary (at the rear, beside the  
DC Power connector) may be used to set the drive ID.  
To avoid possible incorrect ID setting, do not use both  
J1-auxiliary and J6 for ID selection. The following  
figures show where these headers are located on the  
different drives covered by this manual. See notes  
following Figures 3a and 3b where explanations are  
givenaboutthepurposeofeachjumperandspecifythe  
standard factory (called "default") settings of these  
jumpers (i.e., settings used for most common single  
driveapplication).Changestothesesettingsshouldbe  
made only if it is known that the system requires a  
different configuration.  
 
24 Hawk 2 (Wide bus) Family Install Guide, Rev. C  
ST12400WC family 80 pin SCSI I/O drives  
On Hawk 2 family, ST12400WC model drives there is  
no J1-auxiliary. J6 can be used to set drive ID, but the  
host probably does it over the 80 pin interface. J6 may  
be used to drive external LED's and connect the syn-  
chronized spindle signal to other drives and the host.  
This is described in the notes following Figure 3b.  
 
Hawk 2 (Wide bus) Family Install Guide, Rev. C 25  
Drive with HDA up, PCB down,  
Pin 1  
End  
SCSI I/O  
Connector  
viewed from front  
Pin 1  
HDA  
J6  
Drive Front  
J1-SCSI I/O  
J1-Auxiliary  
See  
Figure  
3b  
J6  
[2]  
SCSI ID = 0  
SCSI ID = 1  
J1-DC Power  
Connector  
J2  
SCSI ID = 2  
SCSI ID = 3  
SCSI ID = 4  
SCSI ID = 5  
SCSI ID = 6  
SCSI ID = 7  
Pin 1  
J2  
Jumper  
Positions  
R
E
S
D
S
M
E
W
P
P
E
T
E
T
P
T
P
Reserved  
Delay  
Motor Start  
Enable  
Motor Start  
[2]  
[2]  
[3]  
SCSI ID = 8  
SCSI ID = 9  
Write Protect  
Parity Option  
SCSI ID = 10  
SCSI ID = 11  
SCSI ID = 12  
SCSI ID = 13  
SCSI ID = 14  
SCSI ID = 15  
Enable  
Terminators  
Term. Power  
from Drive  
Term. Power  
to SCSI Bus  
[5]  
[5]  
[6]  
[5]  
Term. Power  
from SCSI Bus  
Position A  
A
A
A
A
1 0  
3
2
Alternate  
Useage:  
+5V  
11  
Ground  
5
9
7
3
1
[4]  
Connections to drive ID switching  
circuits in host equipment  
150 1/8W  
Busy  
SSP  
150 1/8W  
Dashed area is optional user  
circuitry external to the drive  
Vendor Unique  
150 1/8W  
External Fault  
Figure 3a. Drive configurator Hawk 2 family  
ST12400W/WD model (Wide bus) family  
 
26 Hawk 2 (Wide bus) Family Install Guide, Rev. C  
68 Pin SCSI I/O  
Connector  
J1-Auxiliary  
Pin 1A [2]  
Drive  
HDA  
Pin 1  
J1-DC Power  
4P  
3P 2P  
1P  
J1  
PCB  
SCSI ID = 0  
SCSI ID = 1  
SCSI ID = 2  
SCSI ID = 3  
SCSI ID = 4  
SCSI ID = 5  
SCSI ID = 6  
SCSI ID = 7  
[3]  
SCSI ID = 8  
SCSI ID = 9  
SCSI ID = 10  
SCSI ID = 11  
SCSI ID = 12  
SCSI ID = 13  
SCSI ID = 14  
SCSI ID = 15  
A
A
GND  
5
A
A
1 0  
3
2
Alternate  
Useage:  
+5V  
11 9  
7
3
1
[4]  
Connections to drive ID switching  
circuits in host equipment  
150 1/8W  
Busy  
SSP  
150 1/8W  
Dashed area is optional user  
circuitry external to the drive  
Vendor Unique  
150 1/8W  
External Fault  
Figure 3b. Drive configurator Hawk 2 family  
ST12400W/WD model (Wide bus) family  
 
Hawk 2 (Wide bus) Family Install Guide, Rev. C 27  
Drive with HDA up,  
PCB down,  
Pin 1  
viewed from front  
End  
Pin 1  
HDA  
J6  
Drive Front  
J6  
J1  
A
A
A
A
1 0  
3
2
SCSI ID = 0  
SCSI ID = 1  
J2  
SCSI ID = 2  
SCSI ID = 3  
SCSI ID = 4  
SCSI ID = 5  
SCSI ID = 6  
SCSI ID = 7  
Pin 1  
J2  
R
E
S
Jumper  
Positions  
D
S
M
E
W
P
P
E
Reserved  
Delay  
Motor Start  
Enable  
Motor Start  
[7]  
SCSI ID = 8  
SCSI ID = 9  
Write Protect  
Parity Option  
Not Used  
[7]  
SCSI ID = 10  
SCSI ID = 11  
SCSI ID = 12  
SCSI ID = 13  
SCSI ID = 14  
SCSI ID = 15  
Sync Spindle  
Remote LED  
Not Used  
Not Used  
Not Used  
[8]  
Remote LED  
CATH  
Figure 3c. Drive configurator Hawk 2 family  
ST12400WC model (Wide bus) family  
 
28 Hawk 2 (Wide bus) Family Install Guide, Rev. C  
Notes for Figure 3a, 3b and 3c:  
[1] Notes explaining the functions of the various jumpers  
on jumper header connectors J2, J1-auxiliary and J6  
are given below in left to right order of jumper position.  
The term "default" means as standard OEM units are  
configured when shipped from factory. "Off" means no  
jumper is installed; "On" means a jumper is installed. Off  
or On underlined is factory default condition.  
[2] The PCB on "WC" models does not have connector J1-  
auxiliary, but has a single 80 pin combined SCSI I/O and  
DC power connector instead of the 68 pin SCSI I/O and  
4 pin DC power connectors. Included among the 80 pins  
are the SCSI ID, Motor Start and Delayed Motor Start  
select functions, and the synchronous spindle master  
sync signal and the remote LED signals. Do not use J2  
and J6 for these five functions if the host uses the ones  
included in the 80 pin connector.  
[3] Drive ID may be established by installing jumper plugs  
in one of the patterns shown in Figures 3a, 3b and 3c,  
or by plugging onto J6 or J1-auxiliary a cable that leads  
to an external ID selection circuit. Both jumper plugs  
and an external ID selection source should not be used.  
See [4] for other functions of these two headers that are  
time-shared with the drive ID function.  
 
Hawk 2 (Wide bus) Family Install Guide, Rev. C 29  
[4] The drive time-shares the ID and LED/SSP functions of  
J6 and J1-auxiliary. That is, a cable may be attached to  
one of these headers to pick up the synchronized  
spindle reference signal (SSP) and three signals that  
light external LED indicators. If lines for external ID  
selection are not also included in the cable, jumper  
plugs must be used on the header not having a cable  
connected in order to establish drive ID. The drive reads  
the ID from J6 and J1-auxiliary for 250 ms after power-  
on or drive reset, and then uses these headers for the  
LED and SSP functions the remainder of the time. Host  
system documentation should describe the application  
of the three LED indicators if it connects a cable to use  
this option.  
[5] Hawk 2 family model ST12400W and ST11900W only.  
[6] Applies to Hawk 2 family ST12400 and ST11900 W and  
WD models only.  
[7] AppliestoHawk2familyST12400WCandST11900WC  
models only.  
J2  
Jumper.  
Position Jumper Function Description  
RES  
Off/On  
Reserved. Default is no jumper installed.  
DS ME  
Off Off  
Spindle starts immediately after power up - De-  
fault setting.  
 
30 Hawk 2 (Wide bus) Family Install Guide, Rev. C  
continued from previous page  
Off On  
On Off  
Drive spindle does not start until Start Unit com-  
mand received from host.  
Spindle Startup is delayed by SCSI ID times 12  
seconds after power is applied, i.e., drive 0  
spindle starts immediately when DC power con-  
nected, drive1startsafter12seconddelay, drive  
2 starts after 24 second delay, etc.  
On On  
Drive spindle starts when Start Unit command  
received from host. Delayed start feature is over-  
ridden and does not apply when ME jumper is  
installed.  
WP  
On  
Off  
Entire drive is write protected.  
Drive is not write protected. Default is no WP  
jumper installed.  
PE  
On  
Parity checking and parity error reporting by the  
drive is enabled. Default is PE jumper installed.  
Drive does not report result of parity checking to  
host.  
Off  
TE  
(Applies to "W" models only)  
On  
With the jumper installed, the optional on-board  
(non-removable) terminator circuits are enabled  
(connected to the I/O lines). Default is jumper  
installed.  
Off  
Terminator circuits not connected to I/O lines.  
 
Hawk 2 (Wide bus) Family Install Guide, Rev. C 31  
continued from previous page  
TP TP  
Off Off  
(Not applicable to "WC" model drives)  
No terminator power is connected to drive  
terminators or SCSI bus I/O pin 26.  
On Off  
Off On  
Drive supplies its own terminator power only.  
Jumper on this position is factory default.  
Drive supplies power to I/O pin 26 of SCSI bus;  
nonetointernalterminators.Whendriveshave  
differential I/O circuits a jumper on the rightTP  
position may be needed to power external  
terminator (see system documentation). The  
Hawk 2 family ST12400WD drive has differen-  
tial I/O circuits which have no terminator cir-  
cuits on the drive.  
On On  
Drive supplies terminator power to itself (inter-  
nal connection) and to I/O pin 26 of SCSI bus.  
This is a legal jumper setting.  
TP Position A  
On  
Off  
This horizontally positioned jumper across the  
two TP positions nearest PCB edge, connects  
terminator power from SCSI bus I/O pin 26 to  
thedrive'sinternalterminators(forsingle-ended  
I/O only).  
See above explanations for TP jumpers.  
 
32 Hawk 2 (Wide bus) Family Install Guide, Rev. C  
J6 and J1-Auxiliary  
Jumper  
Installation Jumper Function Description  
A3,A2,A1,A0* Drive ID on SCSI Bus. The drive ID is binary  
coded positionwise i.e., jumper in position A3 is  
driveID8, inpositionA2 isdriveID4, inposition  
A1 is ID 2, position A0 is ID 1 and no jumpers  
is ID 0. Default is ID = 0.  
Either J1-auxiliary or J6 may be used to select  
drive ID. Both should not be used at the same  
time, because at some future time when the ID  
is changed the user could fail to configure both  
J1-auxiliary and J6 the same. Default is ID =  
0.  
SSP*  
No jumper ever installed. Used only as a cable  
connection for the reference index signal  
(REFIND+) (J6 Pin 6, bottom) for sync spindle  
feature. J6 pin 10 is GRD. Installing a jumper  
between pins 5 and 6 will cause an erroneous  
drive ID indication.  
BUSY  
Connection for optional external Drive Busy  
indicator.  
VENDOR Connection for optional indicator for custom  
use.  
UNIQUE  
EXTERNAL Optional indicator indicates some external to  
FAULT drive fault occurred.  
See host system documentation.  
*See notes on page 28 and 29  
 
Hawk 2 (Wide bus) Family Install Guide, Rev. C 33  
Drive installation  
This section describes the physical mounting of the  
drive in the host cabinet and the logical installation as  
a system member, which is called drive setup.  
Disc drive mounting  
Do not touch the connector pins or any PCB compo-  
nents without observing static-discharge precautions.  
Always handle the drive by the frame only.  
The drive may be mounted in any orientation.  
• See notes on Figures 4 and 5 pertaining to proper  
drive installation.  
• Verify that all connections between the drive and the  
hostsystemarecorrectlyinstalled.Mostcableshave  
acontrastingcolorstripeindicatingpin1.Pin1onthe  
drive I/O, J1-auxiliary DC power connectors are  
indicated in the figures in the Initial Set-up Informa-  
tion section.  
• Verify option select and drive ID select jumpers. See  
Drive Configuration section.  
 
34 Hawk 2 (Wide bus) Family Install Guide, Rev. C  
G
[3]  
C
L
[4]  
D
[1]  
F
E
A
Notes:  
[1] Mounting holes three on each side, 6-32  
UNC. Max screw length into side of drive  
0.15 in. (3.81 mm). Screw tightening  
torque 8.0 in-lb (.90 NM) max with minimum  
thread engagement of .12 in. (3.00 mm).  
[2] Mounting holes four on bottom, 6-32  
UNC. Max screw length into bottom of  
drive 0.20 in. (5.08 mm). Screw  
tightening torque 8.0 in-lb (.90 NM)  
max with minimum thread engagement  
of .12 in. (3.00 mm).  
B
J
[3] Power and interface connections can  
extend past the "A" dimension by  
0.040 in. (1.02 mm).  
[2]  
[4] Decorative front panel.  
Inches  
Millimeters  
A
B
C
5.74  
4.00  
1.620  
±
±
+
±
±
±
±
±
±
±
±
±
±
0.010 145.80  
0.010 101.60  
±
±
.25  
.25  
H
K
0.026  
0.021  
0.010  
0.010  
41.15 + .66  
±
±
±
±
±
±
±
±
±
±
.53  
.25  
.25  
.25  
.46  
.25  
.25  
.25  
.25  
.25  
.25  
D
E
F
G
H
J
K
L
M
N
P
2.362  
.620  
4.000  
.250  
1.750  
3.750  
2.370  
1.725  
4.100  
0.19  
60.00  
15.75  
0.010 101.60  
0.018  
0.010  
0.010  
0.010  
0.010  
6.35  
44.45  
95.25  
60.20  
43.82  
P
N
0.010 104.14  
0.010 4.83  
M
[4]  
0.015 max  
0.381 max  
Figure 4. Hawk 2 family ST12400W/WD model drive  
mounting dimensions (68 pin SCSI I/O  
connector)  
 
Hawk 2 (Wide bus) Family Install Guide, Rev. C 35  
G
[3]  
C
L
[4]  
D
[1]  
F
E
A
Notes:  
[1] Mounting holes three on each side, 6-32 UNC.  
Max screw length into side of drive 0.15 in.  
(3.81 mm). Screw tightening torque 8.0 in-lb  
(.90 NM) max with minimum thread engage-  
ment of .12 in. (3.00 mm).  
R
[5]  
[2] Mounting holes four on bottom, 6-32 UNC.  
Max screw length into bottom of drive 0.20 in.  
(5.08 mm). Screw tightening torque 8.0 in-lb  
(.90 NM) max with minimum thread engage-  
ment of .12 in. (3.00 mm).  
Pin 1  
Connector Centerline  
B
J
Power and interface connections can extend past  
the "A" dimension by 0.040 in. (1.02 mm).  
[3]  
[4] Decorative front panel.  
[5] Connector is centered (side to side) on drive  
within ±0.020 in. (.508 mm).  
[2]  
H
Inches  
Millimeters  
A
B
C
5.74  
4.00  
1.620  
±
±
+
±
±
±
±
±
±
±
±
±
±
0.010 145.80  
0.010 101.60  
±
±
+
±
±
±
±
±
±
±
±
±
±
.25  
.25  
.66  
.53  
.25  
.25  
.25  
.46  
.25  
.25  
.25  
.25  
.25  
.25  
0.026  
0.021  
0.010  
0.010  
41.15  
D
E
F
G
H
J
K
L
M
N
P
R
2.362  
.620  
4.000  
.250  
1.750  
3.750  
2.370  
1.725  
4.100  
0.19  
60.00  
15.75  
0.010 101.60  
0.018  
0.010  
0.010  
0.010  
0.010  
6.35  
44.45  
95.25  
60.20  
43.82  
K
P
N
0.010 104.14  
0.010 4.83  
0.015 max  
0.181  
0.381 max  
M
[4]  
+
0.018  
0.013  
4.597 + .45  
.33  
Figure 5. Hawk 2 family ST12400WC model drive  
mounting configuration dimension (80 pin  
I/O connector)  
 
36 Hawk 2 (Wide bus) Family Install Guide, Rev. C  
Do not power up the host system until the drive is  
mounted and the system cover is replaced.  
• Connect DC power connector to the drive. (does not  
apply to "WC" models)  
• Replace the Host System cover.  
• Turn on DC power.  
• Boot the system from the floppy drive or from a  
previously installed hard-drive if there is one.  
• Proceed with drive setup of the new hard drive.  
Grounding  
Signal ground (PCB) and HDA ground are connected  
together in the Hawk 2 (Wide bus) drive and cannot be  
separated by the user. The equipment in which the  
drive is mounted is connected directly to the HDA and  
PCB with no electrically isolating shock mounts. If it is  
desired for the system chassis to not be connected to  
the HDA/PCB ground, the systems integrator or user  
must provide a nonconductive (electrically isolating)  
method of mounting the drive in the host equipment.  
 
Hawk 2 (Wide bus) Family Install Guide, Rev. C 37  
SCSI interface drives  
The SCSI interface handles both drive geometry and  
defect management internally. The "no drive installed"  
option is selected for systems with SCSI drives.  
All SCSI interface drives are low-level formatted at the  
factory. You may wish to low-level format the drive to  
optimize its performance for your system. Consult the  
controller documentation for information on low-level  
formatting. Partitioning and high-level formatting can  
be done through DOS by way of the FDISK utility for  
partitioning, and FORMAT for high-level formatting.  
Consult your DOS manual for FORMAT and FDISK  
command options.  
 
Seagate Technology, Inc.  
920 Disc Drive  
Scotts Valley, CA. 95066-4544, USA  
Publication Number: 77767465, Rev. C  
Printed in USA  
 

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