Seagate ST9235AG, ST9145A Setting master/slave jumpers, Connecting cables, Power connections

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ST9235 Family Installation Guide, Rev. B

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Setting master/slave jumpers

Two drives may be controlled through a single drive controller cable with two connectors. In this case, one drive is designated as the master and the other is designated as the slave. As shown in Figure 1 on page 4, the jumpers on each drive must be set to identify which drive is master and which is slave.

Connecting cables

The ST9235 Family drives use a 44-pin AT interface connector cable with two rows of 22 female contacts on 0.079 inch (2 mm) centers (see Figure 1). Pin assignments for the AT interface are listed in Appendix A.

Most cables have a stripe down one side, which designates pin

1.Make sure pin 1 on the interface cable connector is aligned to pin 1 on the drive interface connector and pin 1 on the host connector. To assist in cable alignment, pin 20 has been removed on the male interface connector on the drive. This type of connector is designed to be used with a keyed cable connector having a plug in place of pin 20.

Before mounting the drive, be sure that the connecting cable is long enough to reach the drive, but not so long that it will be pinched when the system enclosure is replaced. Connecting cables for the ST9235 family drives must not be longer than 18 inches (457 mm).

Power connections

Power for the ST9235 family drives is supplied through the 44-pin interface connector (see Appendix A for specific pin assign- ments).

Caution. These drives can accept only +5 volts DC power. Do not use +12 volts DC power.

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Contents ST9080A ST9145A, ST9145AG ST9235A, ST9235AG Contents Read before you begin Installation overview Power connections Setting master/slave jumpersConnecting cables Pin Mounting the drive Configuring system BiosST9235 Family Installation Guide, Rev. B Bios compatibility recommendations Partitioning Formatting and partitioning the driveLow-level formatting High-level formatting Installation troubleshootingST9235 Family Installation Guide, Rev. B Signal name Appendix a AT interface connector pin assignmentsMounting dimensions for the ST9080A Mounting dimensions for the ST9145A and the ST9145AG Mounting dimensions for the ST9235A and the ST9235AG SeaFAX /438-2620 Appendix C Technical support servicesBBS location Modem number Maximum Baud rate

ST9145A, ST9235A, ST9080A, ST9235AG, ST9235 specifications

Seagate has been a prominent player in the storage industry, constantly innovating and producing hard drives that cater to both consumer and enterprise needs. The Seagate ST9235, ST9235AG, ST9080A, ST9235A, and ST9145A are notable models that highlighted the company's commitment to performance, reliability, and advanced technology.

The Seagate ST9235 is a 2.5-inch hard disk drive that primarily serves the mobile computing market. This model is known for its compact size, making it an ideal choice for laptops and portable systems. One of its standout features is its low power consumption, which helps prolong battery life in portable devices. The drive incorporates advanced shock protection, ensuring data integrity even in the event of accidental drops or jolts.

The ST9235AG variant builds upon the ST9235, offering enhanced features tailored for even more demanding applications. This model supports a higher rotation speed, which results in improved data transfer rates and decreased latency. It also includes an upgraded error correction algorithm that further enhances data reliability, making it suitable for both personal and professional use.

Moving on to the ST9080A, this model is designed for enterprise environments where performance is crucial. It supports a larger capacity, allowing businesses to store significant amounts of data efficiently. The ST9080A utilizes Seagate's Servo technology, which enhances track-to-track seeking performance, resulting in faster access to data. This model is particularly valued in applications such as video recording and data archiving due to its robustness.

The ST9235A, a close relative of the ST9235, emphasizes versatility and reliability. It is designed with a focus on various form factors, allowing it to be used in both laptops and desktop environments. This model offers an impressive MTBF (Mean Time Between Failures) rating, which is crucial for users who prioritize long-term dependability. Its performance is characterized by a balanced combination of speed and storage capacity.

Lastly, the ST9145A is a high-performance drive that caters to the needs of users seeking advanced storage solutions. Featuring larger cache memory, this model can significantly reduce data access times. Additionally, the ST9145A employs features designed to minimize operational noise and vibration, promising a quieter experience for users.

In summary, the Seagate ST9235, ST9235AG, ST9080A, ST9235A, and ST9145A models collectively illustrate Seagate’s dedication to producing hard drives that meet varied needs, from mobile computing to enterprise-level storage. Their impressive features, advanced technologies, and consistent reliability make them standout choices in the competitive storage market.
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