Seagate ST318436LW User manual

Barracuda 18XL Installation Guide
Model ST318436LW/LC/LWV/LCV, ST318426LW/LC, ST318416N/W,
ST39236LW/LC/LWV/LCV, ST39226LW/LC, and ST39216N/W
SCSI interface disc drive
Publication Number: 75789511, Rev. B, August 2000
Handling precautions/Electrostatic discharge protection
• Disc drives are fragile. Do not drop or jar the 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 items 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 troubleshooting 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 pressure or attach labels to circuit board or drive top.
Electromagnetic compliance
See Safety and Regulatory Agency Specifications, p/n 75789512.
Drive characteristics ST318436 ST39236
ST318426 ST39226
ST318416 ST39216
Formatted capacity ....................................18.373 Gbytes 9.186 Gbytes
Max. data blocks ........................................35,885,168 17,942,584
(2239070h) (111C838h)
Cylinders/head (user accessible) ...............14,384/6 14,384/3
Disc rotation ...............................................7,200 rpm 7,200 rpm
Operating voltages .....................................+5V +12V +5V +12V
Typical operating current........................0.90 0.60 0.90 0.50
Max. starting current (DC)......................1.0 2.4 1.0 1.7
What you need
• Phillips screwdriver and four 6-32 UNC drive mounting screws
• Forced-air ventilation to provide adequate drive cooling
• An unused drive power connector (not applicable to LC models)
To operate at LVD transfer rates (LW/LWV/LC/LCV models), you also need an
LVD-capable SCSI host adapter, LVD I/O cable and active negation external
terminator.
Multimode interface
LW, LWV, LC, and LCV drives can operate in single-ended (SE) or low voltage
differential (LVD) mode. This multimode capability provides backwards com-
patibility for use with or without an LVD-capable host adapter. The primary
benefits of LVD technology include faster transfer rates, reduced power con-
sumption, increased cable lengths, and improved device connectivity.
You can configure the drive to switch between SE and LVD modes automati-
cally or force it to operate in SE mode only. See Figure 2.
Note. To operate at Ultra2 or higher rates 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 connec-
tor 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.
Caution. Do not mix LVD drives on the same bus with high voltage differential
(HVD) devices–drive damage may occur.
N and W 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 con-
nector located on the front of the drive to set the SCSI ID (see Figure 1).
• Most 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 daisychain,
you can leave this drive’s SCSI ID set to 0 and proceed to the next step.
• The host system’s SCSI controller usually uses SCSI ID 7.
• If you have an LC or LCV model drive, the host normally sets the ID over the
I/O interface, so you don’t need to worry about this step.
• Some systems provide a cable designed to connect to the J5 jumper block
on the drive to remotely set the ID. You can connect this cable to J5 and use
the host-provided remote switch to set the SCSI ID.
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 and W models have non-removable internal terminators that you can enable
using J2 pins 15 and 16. These terminators are enabled in the default configu-
ration. To disable these internal terminators, simply remove the jumper from J2
pins 15 and 16. See Figure 3.
LW, LWV, LC, and LCV models do not have internal terminators or any other
way of adding internal termination on the drive. You must provide external ter-
mination 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 show-
ing a system configuration that uses an external terminator.
• Use active (ANSI SCSI-2 Alternative 2) single-ended terminators when ter-
minating a bus operating in single-ended mode.
• Use SPI-2-compliant active low voltage differential terminators when termi-
nating a SCSI Ultra2 or Ultra160 bus operating in LVD mode.
• The host adapter is normally on the end of the bus and internally termi-
nated. You can configure your bus with another device on the 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 nor-
mally 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 to the bus, place a jumper on J2 pins 1 and 2 as shown in
Figure 2.
• Host systems designed to use LC/LCV drives normally provide termination
power from the host adapter or other source. For this reason, LC/LCV
model drives cannot be configured to provide termination power to the bus.
4. Connect the drive activity LED (optional)
Connect the Drive Activity LED cable to J6 pins 11 and 12 (see Figure 2), or
connect a drive ID and Drive Activity LED cable to J5.
5. Check the other available jumper settings
• Select other options on J2 as illustrated in Figure 2. Do not change these
unless instructed to do so by the host system documentation.
SCSI ID = 0 (default)
Jumper Plug
(enlarged to
show detail)
J6
Drive
Front
Pin 1
Reserved
A2A1A0 A
L
E
D
R
E
S
3
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*
J1
DC Power
J1
68 Pin
SCSI I/O
Connector
Drive HDA
Rear
SCSI ID = 8*
*Not applicable
to “N” model. SCSI ID = 9*
SCSI ID = 10*
SCSI ID = 11*
SCSI ID = 12*
SCSI ID = 13*
SCSI ID = 14*
SCSI ID = 15*A
not used 3A2A1
SCSI ID = 0
SCSI ID = 1
SCSI ID = 2
SCSI ID = 3
SCSI ID = 4
SCSI ID = 5
SCSI ID = 6
SCSI ID = 7
A0
J5
Pin 1
4P 3P 2P 1P
PCBA
Pin 1+5VGround
(default)

Note. LC/LCV drives cannot be configured to provide termination power to the bus.
Figure 2. LW/LWV/LC/LCV option select jumpers
Figure 3. N/W option select jumpers
6. Mount the drive in the host system and connect cables
Note. LC drives are designed to be attached to a carrier or tray and inserted
into the host system without I/O or power 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 chassis using four 6-32 UNC screws.
Two mounting holes are in each side of the drive and there are four mount-
ing 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 into 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 the drive. See Figure 4.
Figure 4. Cable connections and external termination
7. Format the drive
The drive has been low level formatted at the factory. You do not need to per-
form another low level format on this drive unless you decide to perform cer-
tain 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 inopera-
ble. 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 erases all user data. Be sure that you understand
this principle before formatting any hard disc drive. It is not neces-
sary 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 sys-
tems. 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.
•MicrosoftTM.Set the drive type in CMOS to “Zero,” “None,” or “No hard
drive installed.”Use FDISK.EXE and FORMAT.EXE. Systems using Win-
dows 98 or later can create one single partition (drive letter) on the drive.
•MacintoshTM.Use a third-party drive utility (most revisions of Apple’s HD
Setup utility only work with drives having special Apple firmware).
Troubleshooting
•Drive does not spin up. 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 does 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 e-
mail your disc questions to DiscSuppor[email protected].
If you need help installing your drive, consult your dealer first. If you need addi-
tional help, call a Seagate technical support specialist. Before calling, note
your system configuration and drive model number.
Africa [phone] Poland 00 800-311 12 38
Australia [phone] Spain 900-98 31 24
Austria 0 800-20 12 90 Sweden 0 207 90 073
Belgium 0 800-74 876 Switzerland 0 800-83 84 11
Denmark 80 88 12 66 Singapore [phone]
France 0 800-90 90 52 Taiwan [phone]
Germany 0 800-182 6831 Turkey 00 800-31 92 91 40
Hong Kong 800-90-0474 United Kingdom 0 800-783 5177
Ireland 1 800-55 21 22 USA/Canada/ 1-800 SEAGATE or
Italy 800-790695 Latin America [phone]
Middle East [phone] Other European
Netherlands 0 800-732-4283 countries [phone]
Norway 800-113 91
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 Seagate drives. Contact nearest center for return procedures and trade regula-
tions.
Shipping the drive
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.
© 2000 Seagate Technology, LLC All rights reserved
Publication number: 75789511, Rev. B, August 2000, 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 prop-
erty of their respective owners.
Enable parity check of SCSI bus.
Disable parity check.
J2 Pin 1
Reserved Positions
Parity Check option
Single-ended I/O
Terminator Power
Write protect = Off (enables writing).
Write protect = On (disables writing).
Write Protect option
Disable the Delay Motor Start option.
Motor start delay equal to the
SCSI ID multiplied by 12 seconds.
Delay Motor Start option (valid
only if the Enable Motor Start
jumper is not connected)
Enable motor start. The drive waits for
the Start Unit command from the host
before starting the spindle motor.
Disable motor start (default). The
drive starts according to the Delay
Motor Start option.
Motor Start option
Pin 1
End
SCSI I/O
Connector
Drive with
HDA up, PCB
down, viewed
from front
Pin 1
DC Power
Connector
J2
Drive Front J6
Pin 1
HDA
J6
A2 A3A1A0
Reserved
Remote
LED
L
E
D
R
E
S
Reserved
Shipped with cover installed.
Do not remove.
Do not install jumpers
on these four positions.
J6 Jumper
CATH
11
12
J2 Jumper
(default)
(default)
(default)
(default)
A jumper here forces single-ended
I/O operation.
No jumper allows host to select either
single-ended or LVD operation.
Host adapter or other device provides
term. power to external terminator.
Term. Power to SCSI Bus
(default)
(default)
Delay Motor Start
Enable Motor Start
Write Protect
Parity Disable
Term. Power from Drive
Term. Power to SCSI Bus
Term. Power from SCSI Bus
T
ED SM EW PP D
R
E
S
T
P
2
T
P
1
Jumper
Positions
Terminator Enable
Pin 1
J2 J2
Jumper Plug
(enlarged to
show detail)
J2
Drive
Front
J6
Pin 1
(check your
adapter for
Pin 1 location)
Host
Adapter
PCB
Twisted Pair
LVD Cable
Ultra160 or Ultra2 LVD bus segment
SPI-2 compliant
active LVD
external terminator
on the end of
the cable
SCSI LVD/SE
SCSI SE
Ultra SCSI SE bus segment