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Seagate ST3146807FC User Manual

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Cheetah 10K.6 FC Installation Guide

ST3146807FC, ST373307FC, ST336607FC

Publication Number: 100195492, Rev. B, June 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

ST3146807FC ST373307FC ST336607FC

Formatted capacity 146.80 Gbytes 73.40 Gbytes 36.70 Gbytes

Total # of data blocks 286,749,488 143,374,744 71,687,372

(11177330h) (88BB998h) (445DCCCh)

Cylinders (user accessible) 49,855 49,855 49,855

Heads (user accessible) 8 4 2

Disc rotation +/- 5% 10,008 RPM 10,008 RPM 10,008 RPM

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

Typical operating

current (amps) 0.97 0.94 0.97 0.88 0.99 0.75

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 hot-

plugged into the system’s Fibre Channel 40-pin single connector attach-

ment (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.

Figure 1. Sample drive carrier

Note. Figure 1 shows a generic carrier. Most carriers will look different than

the one shown. Many are actually small enclosures rather than

brackets as shown here.

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.

[1] The drive has a 1.2K 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 con-

nected 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)

Drive

Front

Port A Bypass LED [1]

J6

Pin 1

Reserved

Port B Bypass LED [1]

Fault LED [1]

Reserved

Active LED [2]

Reserved

+5V

Active LED [1]

Ground [3]