Seagate Computer Drive ST1181677FC User Guide

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.  
Barracuda 180FC Installation Guide  
Model ST1181677FC/FCV, Fibre Channel interface disc drive  
Note. There are no jumpers or terminators on the drive, and power is sup-  
Publication Number: 100107697, Rev. A, August 2001  
plied through the 40-pin connector.  
Handling precautions/Electrostatic discharge protection  
3. Connect LEDs (optional)  
• Disc drives are fragile. Do not drop or jar the drive and handle the drive  
only by the edges or frame.  
Note. This is an optional step. The drive will work fine without the LEDs  
connected to the drive.  
• 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.  
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.  
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.  
Drive  
Front  
Electromagnetic compliance  
See Safety and Regulatory Agency Specifications, p/n 75789512.  
Pin 1  
Drive characteristics  
J6  
Formatted capacity ....................................181.6 Gbytes  
Reserved  
Max. data blocks .......................................354,600,001 (1522C441h)  
Port A Bypass LED [1]  
Port B Bypass LED [1]  
Fault LED [1]  
Reserved  
Cylinders and heads (user accessible) ......24,247  
Disc rotation ...............................................7,200 rpm  
Operating voltages +5V +12V  
/
24 heads  
Active LED [2]  
+5V  
Typical operating current.........................0.86A 0.84A  
Active LED [1]  
Ground [3]  
What you need  
• Phillips 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  
[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 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).  
Figure 2.  
LED indicator connector  
Fault LED Signal  
Mount the drive to the carrier or tray provided by the host system using four  
6-32 UNC screws. Two mounting holes are in each side of the drive and  
there are four mounting holes in the bottom of the drive. Do not over-tighten  
or force the screws. You can mount the drive in any orientation. See Figure  
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  
Note. FC and FCV drives are designed to be attached to the host system  
Active LED signal  
The drive activates the active LED signal as indicated below.  
without I/O or power cables.  
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.  
 
 

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