Cheetah 9LP Installation Guide, Rev. B

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plished by terminating the bus at the backpanel. For ST39102LW and ST34502LW drives, use an in-line terminator on the cable.

Internal SCSI cable

 

 

 

 

 

Internal

 

Internal

SCSI device

 

SCSI device

 

 

 

 

 

Controller

Terminate

Internal SCSI cable

 

 

 

 

 

 

 

 

Internal

 

Internal

 

Controller

SCSI device

 

SCSI device

 

 

 

 

 

 

 

 

 

 

 

 

 

External

SCSI cable

External

 

External

SCSI device

 

SCSI device

 

 

 

Terminate

Figure 2. SCSI bus termination

Terminator power

You usually will not need to change this option and can normally leave the drive configured as it was shipped from the factory. For information about how to change the terminator power option on your drive, refer to the appropriate drive-specific section.

I/O circuits and data path widths

These drives can be used in single-ended or low voltage differ- ential interface systems; however, do not attempt to mix these drives on the same daisy chain with high voltage differential devices. The circuits are not compatible and drive damage may occur.

These drives have a “wide” (16-bit) SCSI data bus rather than the standard (non-wide) 8-bit SCSI data bus; however, you can

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Seagate ST34502LW/LC, ST39102LW/LC manual Terminator power, Circuits and data path widths

ST39102LW/LC, ST34502LW/LC specifications

The Seagate ST34502LW/LC and ST39102LW/LC are part of Seagate's esteemed range of hard disk drives, designed primarily for enterprise applications where reliability, performance, and scalability are paramount. These drives belong to the 7200 RPM class, providing a blend of speed and efficiency that facilitates high-throughput data processing necessary for demanding workloads.

One of the key features of the Seagate ST34502LW/LC and ST39102LW/LC is their storage capacity. The ST34502LW/LC offers a capacity of 4.5 GB, while the ST39102LW/LC comes with a slightly larger capacity of 9.1 GB. This substantial storage capability allows businesses to manage vast amounts of data effectively, fitting seamlessly into storage arrays and servers that require large data management systems.

Both models utilize the SCSI interface, which is widely recognized for its robustness and reliability in enterprise environments. The SCSI interface provides a high-speed data transfer rate, ensuring that data can be accessed and processed quickly. These drives are also designed with an average seek time of 9.0 milliseconds, ensuring efficient retrieval of data.

Another significant characteristic of the Seagate ST34502LW/LC and ST39102LW/LC is their advanced error recovery features. They are equipped with Seagate's Adaptive Fault Tolerance and Error Correction Codes (ECC), which helps to minimize data loss and enhance data integrity. This added layer of protection is essential for mission-critical applications where data accuracy is non-negotiable.

The drives feature a 3.5-inch form factor, making them suitable for a wide variety of enterprise chassis configurations. Their design incorporates a low power consumption mode, which is crucial for data centers aiming to reduce energy costs and improve overall efficiency. The drives are also subject to rigorous testing to ensure they meet Seagate's high reliability standards, making them a trusted choice for data centers and businesses.

In summary, the Seagate ST34502LW/LC and ST39102LW/LC hard drives are designed to meet the demanding requirements of enterprise environments. With robust capacities, reliable performance, and advanced features, these drives represent a solid investment for organizations looking to enhance their data storage capabilities while ensuring operational efficiency. Their reliability and efficiency make them an ideal choice for various applications, from high-performance computing to large-scale storage solutions.