3.2Configuring the drive

Each drive on the Serial ATA interface connects in a point-to-point configuration with the Serial ATA host adapter. There is no master/slave relationship because each drive is considered a master in a point-to-point relationships. If two drives are attached on one Serial ATA host adapter, the host operating system views the two devices as if they were both “masters” on two separate ports. This means both drives behave as if they are Device 0 (master) devices.

Serial ATA drives are designed for easy installation with no jumpers, terminators, or other settings. It is not nec- essary to set any jumpers on this drive for proper operation. The jumper block adjacent to the signal connector is for factory use only.

SATA interface connector

Jumper block SATA power connector (factory use only)

Figure 2. Serial ATA connectors

3.3Serial ATA cables and connectors

The Serial ATA interface cable consists of four conductors in two differential pairs, plus three ground connec- tions. The cable size may be 30 to 26 AWG with a maximum length of one meter (39.37 inches). See Table 7 for connector pin definitions. Either end of the SATA signal cable can be attached to the drive or host.

For direct backplane connection, the drive connectors are inserted directly into the host receptacle. The drive and the host receptacle incorporate features that enable the direct connection to be hot pluggable and blind mateable.

For installations which require cables, you can connect the drive as illustrated in Figure 3.

SATA interface connector

Power connector

SATA interface cable

Power cable

Figure 3. Attaching SATA cabling

Each cable is keyed to ensure correct orientation.

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Momentus 5400.3 SATA Product Manual, Rev. D

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Seagate ST980811AS, ST960813AS, ST940814AS, ST9160821AS, ST9120822AS Configuring the drive, Serial ATA cables and connectors

ST960813AS, ST9100828AS, ST9160821AS, ST9120822AS, ST980811AS specifications

The Seagate hard drives ST9120822AS, ST960813AS, ST980811AS, ST9100828AS, and ST940814AS represent a solid lineup of storage solutions designed primarily for personal computers and external storage applications. Each of these models showcases a blend of performance, reliability, and innovative technology that caters to a variety of user needs.

The ST9120822AS is a 120GB SATA drive known for its advanced data storage capabilities and a 7200 RPM spindle speed, delivering quick access times and enhanced performance for everyday computing tasks. Its Native Command Queuing (NCQ) technology optimizes the order of read and write commands sent to the drive, which significantly boosts performance, especially in multi-tasking environments. The drive is also equipped with an 8MB cache buffer that assists in speeding up data retrieval processes.

Moving up in capacity, the ST960813AS offers 60GB of storage, featuring the same 7200 RPM performance as its smaller sibling. It also benefits from NCQ technology, making it suitable for more demanding applications. This drive excels in scenarios where fast data access is essential, such as gaming and multimedia applications.

The ST980811AS provides 80GB of storage capacity. It shares many core features with its counterparts, including a 7200 RPM spindle speed and an 8MB cache that enhances data throughput. The reliability factor is paramount in these drives, as they come with built-in features designed to minimize data loss, such as error correction codes and advanced formatting technology.

The ST9100828AS boasts an impressive 100GB of capacity, providing ample space for storing large files, applications, and multimedia content. It combines high performance with enhanced reliability, ideal for users who require a dependable storage solution for their important data.

Finally, the ST940814AS offers a 40GB size capability. Despite its smaller storage size, it maintains high performance levels with a 7200 RPM speed and 8MB cache, making it a viable option for those looking for a balance between efficiency and space.

In summary, the Seagate ST9120822AS, ST960813AS, ST980811AS, ST9100828AS, and ST940814AS models encapsulate the essence of dependable storage with their various capacities and robust performance features. These drives reflect a commitment to quality and innovation, ensuring users can rely on them for their data storage and access needs in both personal and professional environments.