seagate BARRACUDA 36ES2 INSTALLATION guide

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Barracuda 36ES2 Installation Guide

ST336938LW, ST318438LW, ST336918N and ST318418N
SCSI interface disc drive

Publication Number: 100182976, Rev. A, December 2001

Handling precautions/electrostatic discharge protection

• Disc d rives are fragile. Do not drop or jar t he drive and handle the drive
only by the edges or frame.

• Drive electronics are extremely sensitive to static electricity. Keep the
drive in its antistatic container until you are ready to install it. Wear a wrist
strap and cable connected to ground. Discharge static from all item s near
or that will contact the drive. Never use an ohmmeter on any circuit
boards.

• Turn off the power to the host system during installation.

• Always use forced-air ventilation when operating the drive.

• Use caution when troubleshoot ing a unit that has voltages present.

• Do not disassemble the drive; doing so voids the warranty.

• Return the entire drive for depot service if any part is defective.

• Do not apply pressur e or attach labels to circuit board or drive top.

Electromagnetic compliance

See Safety and Regulatory Agency Specifications, p/n 75789512.

Drive characteristics

ST336938LW/ ST318438LW/
ST336918N ST318418N

Formatted capacity 36.954 Gbytes 19.924 Gbytes

Total # of data blocks 72,176,565 36,088,282

(044D53B5h) (0251C800h)
Cylinders (user accessible) 56,332 56,332
Heads (user accessible) 2 2
Disc rotation +/–5% 7,200 RPM 7,200 RPM
Operating voltages +5V +12V +5V +12V

Typical operating

current (amps) 1.11 0.72 1.11 0.72

What you need

• Phillips screwdriver and four 6-32 UN C drive mounting screws

• Forced-air ventilation to provide adequate drive cooling

• An unused drive power connector
To operate at LVD transfer rates, you may also need an LVD-capable SCSI

host adapter, LVDI/O cable and active negation external terminator.

Multimode interface

This drive can operate in single-ended (SE) or low voltage differential (LVD)
mode. This multimode capability provides backwards compatibility so you
can use it with or without an LVD-capable host adapter. The primary bene­fits of LVD technology include faster transfer rates, reduced power con­sumption, increased allowable cable lengths, and improved device
connectivity.

You can configure the drive to switch between SE and LVD modes automat­ically or force it to operate in SE mode only. To configure this option, s ee
Figure 2.

Note. To operate in LVD mode, all devices on the same bus (cable) must

be running in LVD mode. If you add any SE device to the bus, all
devices on that bus operate in SE mode.

Note. Some LVD host adapters provide an LVD connector and an SE con-

nector on the same host adapter to allow you to run SE and LVD
drives concurrently at their maximum capabilities. Check your SCSI
host adapter documentation. See Figure 4.

Note. Donotmix LV D drives on the same bus (cable) with high voltage dif-

ferential (HVD) devices—drive dam age may occur.

N model drives are not multimode devices. They are single-ended (SE)
devices and cannot be configured to operate in LVD mode.

Installation instructions

1. Set the SCSI ID

Determine which SCSI IDs are already being used in the system and then

assign this disc drive a SCSI ID that isn’t already being used. Use the J6
connector located on the front of thedrivetosettheSCSIID (see Figure 1).

• Most Barracuda® 36ES2 drives are factory set with the SCSI ID set at 0.
If this is the only SCSI drive in your system and there are no other SCSI
devices on the bus(cable),youcan leave thisdrive’sSCSI ID set to0and
proceed to the next step.

• The host system’s SCSI controller usually uses SCSI ID 7.

• If you have an LW m odel drive, the ID may be set using either J6 or J5
(located on the rear of the drive).

• Some systems provide a cable designed to connect to the J5 jumper
block on the drive to remotely set the ID. Youcan connect this cable to J5
and use the host-provided remote switch to se t the SCSI ID.

Drive
Front

umper Plug
(enlarged to
show detail)

J6

R

L

Reserved

E

E

A2A1A

A

3

S

SCSI ID = 0 (default)
SCSI ID = 1
SCSI ID = 2
SCSI ID = 3
SCSI ID = 4
SCSI ID = 5
SCSI ID = 6
SCSI ID = 7
SCSI ID = 8
SCSI ID = 9
SCSI ID = 10
SCSI ID = 11
SCSI ID = 12
SCSI ID = 13
SCSI ID = 14
SCSI ID = 15

D

68 Pin

SCSI I/O

Connector

Pin 1

0

Pin 1

J1
SCSI ID = 0
SCSI ID = 1
SCSI ID = 2

SCSI ID = 3
SCSI ID = 4
SCSI ID = 5
SCSI ID = 6
SCSI ID = 7
SCSI ID = 8

SCSI ID = 9
SCSI ID = 10
SCSI ID = 11
SCSI ID = 12
SCSI ID = 13
SCSI ID = 14
SCSI ID = 15

not used

+5V

Ground

A

3A2A1

Drive HD

Rear

J5

J1

Pin 1

DC Power

4P 3P 2P 1P

(default)

(LW drives only

A

0

PCB

Figure 1. Setting the SCSI ID

2. Configure termination

If you are installing the drive in a system that has other SCSI devices
installed, terminate only the end devices on the SCSI bus (cable).

N models have non-removable internal terminators that you can enable
using J2 pins 15 and 16. These terminators are enabled in the default con­figuration. To disable these internal terminators, simply remove the jumper
from J2 pins 15 and 16. See Figure 3.

LW models do not have internal terminators or any other way of adding
internal termination on the drive. You must provide external termination
when termination is required. This is normally done by adding an inline ter­minator on the end of the cable. See Figure 4 for an illustration showing a
system configuration that uses an external terminator.

• Use active (ANSI SCSI-2 Alternative 2) s ingle-en ded terminators when
terminating a bus operating i n single-ended mode.

• Use SPI-2-compliant active low voltage differential terminators when ter­minating a SCSI Ultra2 bus operating in LVD mode.

• The host adapter is normally on the other end of the bus and internally
terminated. You can configure your bus with another device on the ot her
end if you remove termination from the host adapter.

3. Configure terminator power

Terminators have to get power from some source. The default configuration
results in the drive not supplying termination power to the bus. You should
normally leave this drive set at this default unless your host system requires
the drive to supply termination power to the bus. To configure this drive to
supply termination power t o the bus, place a jumper on J2 pins 1 and 2 as
shown in Figure 2.

Drive with

J

t)

t)

t)

t)

lt)

lt)

J2

E

HDA up, PCB
down, viewed

from front

Reserved
Remote

LED

Shipped with cover installed.

Do not install jumpers

on these four positions.

2 Jumper

Reserved

Do not remove.

Drive Front

DC Power
Connector

SCSI I/O

Connector

Pin 1

HDA

L
E
D

11

12

J2

J6

R
E

A2A3A1A

0

S

J6 Jumper

J6

Pin 1

Pin 1

End

Reserved Positions

Single-ended I/O
A jumper here forces single-ended

I/O operation.
No jumper allows host to select either

single-ended or LVD operation.

Delay Motor Start option (valid
only if the Enable Motor Start
jumper is not connected)

CATH

Disable the Delay Motor Start option.
Motor start delay equal to the

SCSI ID multiplied by 12 seconds.
Motor Start option

Disable motor start (default). The
drive starts according to the Delay
Motor Start option.

Enable motor start. The drive waits for
the Start Unit command from the host
before starting the spindle motor.

Write Protect option
Write protect = Off (enables writing).

Write protect = On (disables writing).
Parity Check option

Enable parity check of SCSI bus.
Disable parity check.

Terminator Power
Term. Power to SCSI Bus

Host adapter or other device provides
term. power to external terminator.

Figure 2. LW option select jumpers

J2

Jumper

Positions

Terminator Enable

Delay Motor Start

Enable Motor Start

TEDSMEWPP

Pin 1

R

T

T

E

P

P

D

S

2

1

Jumper Plug

(enlarged to
show detail)

J6

J2

Write Protect

Parity Disable

Term. Power from Drive

Term. Power to SCSI Bus

Term. Power from SCSI Bus

Figure 3. N option select jumpers

4. Mount the drive in the host system and co nnect cables
Caution. Some mounting kits may contain screws that are too long to be

fully tightened without causing damage to the drive. The maxi­mum length for screws to extend into the drive mounting holes is

0.15 inch (3.82 mm), measured from the outer surface of the
drive.

a. Mount the drive to the host system’s chass is using four 6-32 UNC

screws. Two mounting holes are in each side of the drive and there are
four mounting holes in the bottom of the drive. Do not over-tighten or
force the screws. You can mount the drive in any orientation.

b. Connect the SCSI I/O cable int o the drive’s SCSI connector. Do not

stretch or crimp this cable, and do not block the system’s air flow.
Note. For Ultra2 and faster operation, a twisted pair LVD cable is required.
c. Connect the DC power cable to t he drive. See Figure 4.

Ultra160 or Ultra2 LVD bus segment

(check your

adapter for

Pin 1 location)

SPI-2 compliant

active LVD

external terminator

on the end of

the cable

Ultra SCSI SE bus segment

Figure 4. Cable connections and external termination

Twisted Pair

LVD Cable

Pin 1

Adapter

Host
PCB

J2

SCSI LVD/SE

Pin 1

(defau

(defaul

(defaul

(defaul

(defaul

(defau

SCSI S

5. Format the drive

The drive has been low level formatted at the factory. You do not need to
perform another low level format on this drive unless you dec ide to perform
certain diagnostics through the host adapter. If you do decide to perform a
low level format, do not abort the format as this is likely to make the drive
inoperable. A low level format, with verify turned on, will typically take up to
one hour.

Protect against power failure or other power interruptions during the format.
a. Turn on DC power to the host system.

b. Boot the system from a system floppy, CD, or from a previously installed

hard disc drive if there is one.

c. Format the drive.
Caution. Formatting a drive eras es all user data. Be sure that you under-

stand this principle before formatting any hard disc drive. It is not
necessary to format a drive that previously has been used to
store data, unless your intention is to erase all user data.
Seagate® is not responsible for lost user data.

Barracuda disc drives are designed to operate with a variety of operating
systems. Please refer to your system or SCSI controller manual for informa­tion about formatting and setting up the drive. Some quick desktop system
notes are provided below.

TM

• Microsoft

. SetthedrivetypeinCMOSto“Zero,” “None,” or “No hard

drive installed.” Use FDISK.EXE and FORMAT.EXE. Systems using Win­dows 98 or later can create one single partition (drive letter) on the drive.

• Macintosh

TM

. Use a third-party drive utility (most revisions of Apple’s HD

Setup utility only work with drives having special Apple firmware).

Troubleshooting

• Drivedoesnotspinup.Check cables and all jumper settings. Make
sure cable pin 1 (edge stripe) matches PCB pin 1.

• Drive spins, but no LED on/off activity. Check SCSI ID setting. Set the
ID so that each device on the SCSI chain has its own unique ID. See also
the next item below. Host I/O controller is usually ID 7.

• Computer do es not seem to recognize the drive. Verify that the drive
is enabled by the SCSI host adapter setup utility.

• FDISK does not detect the drive. Run the FDISK program located on
your Windows startup diskette. Type fdisk/status to verify that your hard
drive is present.

Seagate support services

For online information about Seagate products, visit www.seagate.com or e­mail your disc questions to [e-mail].

If you need help installing your drive, consult your dealer first. If you need
additional help, call a Seagate technical support specialist. Before calling,
note your system conf iguration and drive model number.

Africa [phone] Norway 800-113 91
Australia 1800-14-7201 Poland 00 800-311 12 38
Austria 0 800-20 12 90 Spain 900-98 31 24
Belgium 0 800-74 876 Sweden 0 207 90 073
Denmark 80 88 12 66 Switzerland 0 800-83 84 11
France 0 800-90 90 52 Singapore 800-1101-150
Germany 0 800-182 6831 Taiwan [phone]
Hong Kong 800-90-0474 Thailand 001-800-11-0032165
Indonesia 001-803-1-003-2165 Turkey 00 800-31 92 91 40
Ireland 1 800-55 21 22 United Kingdom 0800-783 5177
Italy 800-790695 USA/Canada/ 1-800 SEAGATEor
Malaysia 1-800-80-2335 Latin America [phone]
Middle East [phone] Other European
Netherlands 0 800-732-4283 countries [phone]
New Zealand 0800-443988

Warranty. Contact your place of purchase or our web site (above).

Return Merchandise Authorization (RMA). Before returning the drive, verify that it

is defective. Seagate Worldwide customer service centers are the only facilities autho­rized to service Seagatedrives. Contact nearest center forreturn procedures and trade
regulations.

Shipping thedrive
Caution. Back up the data before shipping. Seagate assumes no responsibility for

data lost during shipping or service. Shipping drive in an unapproved container voids
the warranty. Pack the drive with original box and packing materials. Use no other
materials. This prevents electrical and physical damage in transit.

© 2001 Seagate Technology LLC All rights reserved

Publication number: 100182976, Rev. A, December 2001, Printed in U.S.A.
Seagate, Seagate Technology, the Seagate Logo, and Barracuda are either registered

trademarks or trademarks of Seagate Technology LLC. All other trademarks are the
property of their respective owners.