Seagate ST336753FC, ST318753FC, ST373453FC User Manual

Cheetah 15K.3 FC Installation Guide

ST373453FC, ST336753FC and ST318753FC

Publication Number: 100148127, Rev. C, July 2002

Handling precautions/Electrostatic discharge protection

• Disc drives are fragile. Do not drop or jar the drive. 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 the circuit board or to the top of
the drive.

Electromagnetic compliance

See the Safety and Regulatory Agency Specifications page, part number
75789512, which was shipped with this installation guide.

Drive characteristics

ST373453FC ST336753FC ST318753FC

Formatted capacity 73.4 Gbytes 36.7 Gbytes 18.4 Gbytes

Total # of data blocks 143,374,744 71,687,372 35,843,686

(88BB998h) (445DCCCh) (222EE66h)

Cylinders (user accessible) 31,310 31,310 31,310

Heads (user accessible) 8 4 2

Disc rotation +/– 5% 15,000 RPM 15,000 RPM 15,000 RPM

Operating voltages +5V +12V +5V +12V +5V +12V
Typical operating

current (amps) 1.05 1.15 1.02 0.97 1.02 0.86

What you need

• Screwdriver and four 6-32 UNC drive mounting screws

• Forced-air ventilation to provide adequate drive cooling

• Host system with Fibre Channel host adapter or backplane

Installation instructions

1. Mount the drive in the host system carrier or tray

Most Fibre Channel host systems (including enclosures) provide a way to
insert the drive using a carrier or tray which allows the drive to be hot­plugged into the system’s Fibre Channel 40-pin single connector attach­ment (FC-SCA).

Mount the drive to the carrier or tray provided by the host system using four
6-32 UNC screws. Do not over-tighten or force the screws. You can mount
the drive in any orientation. See Figure 1.

Note. FC drives are designed to be attached to the host system without I/O

or power cables.

2. Insert the drive

Slide the carrier or tray into the appropriate bay in your host system. This
connects the drive directly to your system’s 40-pin Fibre Channel single
connector attachment (FC-SCA). The FC-SCA connector is normally
located on a Fibre Channel backpanel.

Note. There are no jumpers or terminators on the drive, and power is sup-

plied through the 40-pin connector.

3. Connect LEDs (optional)

Note. This is an optional step. The drive will work fine without the LEDs

connected to the drive.

The drive supplies pins that you can use to connect fault and active LEDs.
This allows you to monitor drive fault conditions and activity. The actual LED
is external to the drive.

Drive
Front

Pin 1

J6

Reserved

Port A Bypass LED [1]

Port B Bypass LED [1]

Fault LED [1]

Reserved

Active LED [2]

Reserved

+5V

Active LED [1]

Ground [3]

[1] The drive has a 2.2K ohm resistor in series with this LED driver. Tie the

minus side of an external high-efficiency LED (i.e., 2ma) to this pin.
Connect the plus side of the LED to +5V.

[2] An external current-limiting resistor is required when connecting an

LED to this pin. The minus side of the resistor/LED combination is con­nected to this pin. Connect the plus side to +5V.

[3] Jumper storage location (across pins 2 and 4).

Figure 2. LED indicator connector

Fault LED Signal

The drive activates the fault LED Out signal when:

• the drive detects failure of both ports

• the drive detects an internal failure

• the drive receives the appropriate fault LED command from the host

Active LED signal

The drive activates the active LED signal as indicated below.

Normal command activity LED status

Spun down and no activity ............. Slow blink (20% on and 80% off)

Spun down and activity .................. On

(command executing)

Spun up and no activity.................. On

Spun up and activity ....................... Off

(command executing)

Spinning up or down....................... Blinks steadily (50% on and 50% off)

Format in progress ......................... Toggles on/off

(each cylinder change)

Figure 1. Sample drive carrier

Note. Figure 1 above shows a generic carrier. Most carriers will look differ-

ent than the one shown. Many are actually small enclosures rather
than brackets as shown here.

4. 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 decide 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 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 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.

®

is not responsible for lost user data.

Cheetah

Seagate

®

15K.3 disc drives are designed to operate with a variety of oper­ating systems. Please refer to your system or Fibre Channel host adapter
(controller) manual for information about formatting and setting up the drive
for use with your particular operating system.

Hot plugging the drive

This drive features hot plugging capabilities which allow you to insert and
remove the drive without powering down the host system. Any time a drive
is inserted or removed from a Fibre Channel loop, a short loop interruption
occurs and the loop resynchronizes automatically to accommodate the
added (or removed) drive.

Drive startup options

The drive’s motor will start spinning the discs based on the status of two sig­nals set by the host adapter. These two signals are called Start_1 and
Start_2. There are four options as described below.

Option Start_2 Start_1 Motor spin function

1 ........... Low ....... Low ........ Motor spins up at DC power on.

2 ........... High ...... Low ........ Motor spins up when the host adapter sends

the SCSI Start command.

3 ........... Low ....... High........ Motor spins up after a delay of 12 seconds

times the physical address of the drive.

4 ........... High ...... High........ The drive will not spin up.

Most systems that host only a couple of drives use option 1 to enable all of
the drives to start up immediately when power is applied to the drives. Sys­tems hosting larger numbers of drives may be configured to start drives at
various times to avoid overloading the capabilities of the host system’s
power supply.

If you want to change the startup option for the drive, please refer to the
documentation provided with your Fibre Channel host adapter or host sys­tem.

Troubleshooting

• Drive does not spin up. Remove and then reinsert the drive into the

drive bay on the host-supplied carrier or tray. Make sure the drive makes
firm contact with the host’s FC backpanel connector. Also, check the
drive startup options for the Start_1 and Start_2 signals controlled from
your host adapter. See “Drive Startup Options” above for the four possi­ble startup options.

• Computer does not seem to recognize the drive. Verify that the drive

is enabled by the FC host adapter setup utility.

Seagate support services

For online information about Seagate products, visit www.seagate.com or
e-mail 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 configuration and drive model number (

ST336753FC or ST318753FC).

Africa [phone] New Zealand 0800-443988
Australia 1800-14-7201 Norway 800-113 91
Austria 0 800-20 12 90 Poland 00 800-311 12 38
Belgium 0 800-74 876 Spain 900-98 31 24
Denmark 80 88 12 66 Sweden 0 207 90 073
France 0 800-90 90 52 Switzerland 0 800-83 84 11
Germany 0 800-182 6831 Singapore 800-1101-150
Hong Kong 800-90-0474 Taiwan [phone]
India 1-600-33-1104 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 0 800-783 5177
Italy 800-790695 USA/Canada/ 1-800 SEAGATE or
Malaysia 1-800-80-2335 Latin America [phone]
Middle East [phone] Other European
Netherlands 0 800-732-4283 countries [phone]

Warra nty. 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 ser vice centers are the only facilities autho­rized to service Seagate drives. Contact nearest center for return procedures and trade
regulations.

Shipping the drive
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.

ST373453FC,

© 2002 Seagate Technology LLC All rights reserved
Publication number: 100148127, Rev. C, July 2002, Printed in U.S.A.

Seagate, Seagate Technology, and the Seagate logo are registered trademarks of
Seagate Technology LLC. Cheetah is a registered trademark of Seagate Technology
LLC. Other product names are registered trademarks or trademarks of their owners.

Seagate reserves the right to change, without notice, product offerings or specifica­tions.