Seagate ST3146807FC User Manual

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.  
Cheetah 10K.6 FC Installation Guide  
ST3146807FC, ST373307FC, ST336607FC  
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.  
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.  
Note. There are no jumpers or terminators on the drive, and power is sup-  
plied through the 40-pin connector.  
• 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.  
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  
Electromagnetic compliance  
See the Safety and Regulatory Agency Specifications page, part number  
75789512 which was shipped with this installation guide.  
Pin 1  
J6  
Drive characteristics  
ST3146807FC ST373307FC ST336607FC  
Formatted capacity  
Total # of data blocks  
146.80 Gbytes 73.40 Gbytes 36.70 Gbytes  
Reserved  
286,749,488  
(11177330h)  
143,374,744  
(88BB998h)  
71,687,372  
(445DCCCh)  
Port A Bypass LED [1]  
Port B Bypass LED [1]  
Fault LED [1]  
Reserved  
Cylinders (user accessible) 49,855  
49,855  
49,855  
Heads (user accessible)  
Disc rotation +/- 5%  
8
4
2
10,008 RPM  
+5V +12V  
10,008 RPM  
+5V +12V  
10,008 RPM  
Operating voltages  
Typical operating  
current (amps)  
+5V  
+12V  
Active LED [2]  
Reserved  
0.97 0.94  
0.97 0.88  
0.99 0.75  
What you need  
+5V  
• 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  
Active LED [1]  
Ground [3]  
[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.  
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).  
[3] Jumper storage location (across pins 2 and 4).  
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.  
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  
Note. FC drives are designed to be attached to the host system without I/O  
or power cables.  
• 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  
 

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