Seagate ST318451FC, X15 FC User Manual

Cheetah X15 FC Installation Guide

Model ST318451FC, Fibre Channel interface disc drive

Publication Number: 83329487, Rev. B, September 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 ventilati on 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.

Electromagne tic compliance

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

Drive characteristics

Formatted capacity ....................................18.4 Gbytes

Max. data blocks .......................................35,843,670 (0222EE56h)

Cylinders and heads (user accessible)......10,377 / 10 heads

Disc rotation...............................................15k rpm

Average latency..........................................2.0 msec

Operating voltages.....................................+5V +12V

Typical operating current. ........................0.77A 1.15A

Data buffer size..........................................4,095 kbytes

What you need

• Phillips screwdriver and four 6-32 UNC drive mounting screws.

• Forced-air ventilation to provide adequate drive cooling. This is normally
provided by one or more fans in the host system or enclosure.

• 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.

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

Note.

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.

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

Note.

plied through the 40-pin connector.

3. Connect LEDs (optional)

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

Note.

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. Con-

nect 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

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

Note.

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 for mat, 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 for ST318451FC drives.

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
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.

Cheetah 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 allows 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 ........ Mot or 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 o ption for the drive, please refer to the
documentation provided with your Fibre Channel host adapter or host sys­tem.

Troubleshooting

•

Drive does not spin up.

drive bay on the host-supplied carrier or tray. Make sure the drive makes
firm contact with the host’s FC backpanel connector.

•

Computer does not seem to recognize the drive.

is enabled by the FC host adapter setup utility.

Remove and then reinsert the drive into the

Verify that the drive

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 configuration and drive model number (ST318451FC).

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 Tur key 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.
Return Merchandi se Authori zatio n (RMA) .

is defective. Seagate Worldwide customer service centers are th e on ly facilit ies au tho ­rized to service Seagate drives. Contact nearest center for return procedures and trade
regulations.

Shipping the drive
Caution.

data lost during shi pping or ser vice. Shi pping drive in an unapproved contai ner voids
the warranty. Pack the drive with original box and packing m aterials. Use no other
materials. This prevents electrical and physical damage in transit.

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

Before returning the d rive, verify tha t it

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

© 2000 Seagate Technology, LLC All rights reserved
Publication number: 83329487, Rev. B, September 2000, Printed in U.S.A.
Seagate, Seagate Technology, the Seagate Logo, and Cheetah ar e either registere d

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property of their respective owners.