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Cheetah 36LP FC Installation Guide

Models ST336704FC/FCV and ST318304FC/FCV Fibre Channel interface disc drive

Publication Number: 83329481, Rev. B, November 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 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.

Electromagnetic compliance

See Safety and Regulatory Agency Specifications, p/n 75789512.

Drive characteristics

	ST336704		ST318304
Formatted capacity	36.7 Gbytes		18.35 Gbytes
Max. data blocks	71,687,369		35,964,301
	(0445DCC8h)		(0224C58Ch)
Cylinders and heads (user accessible) 14,100/12 heads			14,100/6 heads
Disc rotation	10,033 rpm		10,033 rpm
Operating voltages	+5V	+12V	+5V	+12V
Typical operating current	0.93A	1.14A	0.93A	0.91A

•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

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. 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 Figure 1.

Note. FC and FCV drives are designed to be attached to the host system without I/O or power cables.

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.

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

Reserved

Port A Bypass LED [1]

Port B Bypass LED [1]

Fault LED [1]

Reserved

Active LED [2]

+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 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)

Figure 1. Sample drive carrier

ST318304FC/FCV, ST336704FC/FCV specifications

The Seagate ST336704FC/FCV and ST318304FC/FCV are high-performance 3.5-inch enterprise hard drives designed for demanding storage applications in data centers and server environments. These drives are part of Seagate's extensive lineup of FC (Fibre Channel) disks, catering specifically to organizations that require reliable and efficient storage solutions.

One of the standout features of both the ST336704FC and ST318304FC is their operation over the Fibre Channel interface. This allows for faster data transfer rates and enhanced performance in high-throughput environments. The ST336704FC offers a capacity of 3.6TB, while the ST318304FC provides 1.8TB of storage, both designed to accommodate large volumes of data and support mission-critical applications.

In terms of performance, both drives boast a rotational speed of 15,000 RPM. This high spindle speed enables lower latency and quicker access times, which is crucial for applications that demand rapid data retrieval. Additionally, these drives are equipped with 8MB of cache memory, further improving performance by allowing temporary storage for frequently accessed data.

Reliability is a significant characteristic of the ST336704FC and ST318304FC units. They are designed to operate in continuous-duty environments and have a mean time between failures (MTBF) rating of 1.6 million hours. This endurance ensures that organizations can rely on these drives for consistent performance over extended periods, minimizing downtime and maintenance costs.

The drives utilize Seagate’s Advanced Format technology, which enhances the efficiency of data storage by utilizing larger sector sizes. This results in improved error correction and a more efficient data management process. Moreover, both models feature hot-swappable capabilities, allowing for easy replacement without the need to power down the server, thereby maintaining system uptime.

In summary, the Seagate ST336704FC/FCV and ST318304FC/FCV hard drives are tailored for enterprise customers in need of robust, high-speed, and reliable storage solutions. With their Fibre Channel interface, high rotational speed, and advanced technologies, these drives deliver exceptional performance and reliability, making them suitable for a wide range of applications in data-intensive environments. Organizations looking for efficient data storage options in a competitive market will find these drives a solid choice for their enterprise storage needs.