Seagate ST446452W manual Drive termination

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Elite 47 Installation Guide, Rev. B

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user’s manual to ensure that you have not violated its SCSI ID numbering recommendations.

Drive termination

If you are installing a Elite 47 drive in a system that has other SCSI devices installed, terminate only the end devices on the SCSI chain. A SCSI device is any disc drive, scanner, tape backup unit, or other piece of hardware connected to your sys- tem using the SCSI bus.

The top example in Figure 3 shows an internal hard disc at one end of the SCSI bus with the SCSI controller at the other end (both are terminated). The bottom example shows two additional SCSI devices connected externally. This means the SCSI con- troller is no longer on the end of the SCSI chain and should not be terminated.

Note. Some controllers prefer to remain terminated even if they are in the middle of the chain. Also, some controllers treat the internal and external chains as separate logical buses. This means you may need to terminate both the first and last devices on both logical buses to achieve proper termination. If necessary, refer to your system or controller documentation to see how this is handled in your particular system.

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Contents Elite Disc Drive ST446452W Contents Electrostatic discharge protection PrefaceImportant safety information and precautions Page Wichtige Sicherheitshinweise Page Elite 47 Installation Guide, Rev. B Electromagnetic compliance Regulatory agency complianceElectromagnetic susceptibility Australian C-Tick Electromagnetic compliance for the European UnionOnline services Technical support servicesSeagate CompuServe forum SeaFAX FAX servicesSeagate technical support Direct-support servicesManufacturer’s representatives Customer service centersGeneral description Drive characteristics Elite 47 Installation Guide, Rev. B Dimensions of the drive Initial setup information Scsi ID jumpers Setting the Scsi ID Drive termination Scsi bus termination Terminating the driveTerminating the drive Terminator powerCircuits and data path widths Setting terminator power jumpersMbytes/s Meters 19.7 ft Meters 9.8 ft Cable characteristics for single-ended circuitsPin wide connection to drive Multiple-drive connection to host adapter Additional jumper options Other applicable jumper optionsLED indicator connections Active, Ready, and Fault indicatorsProviding adequate cooling Kühlung des Systems Suggested air flow Abbildung 10.Empfohlener Luftstromverlauf Installation des Laufwerkes und Anschluß der Kabel Mounting the drive and connecting cablesElite 47 Installation Guide, Rev. B DC power connector Abbildung 11.Gleichstromanschluß Hinweis Page Mounting configuration dimensions Quick reference desktop system notes Formatting the drivePage Page Page Elite 47 Installation Guide, Rev. B Elite 47 Installation Guide, Rev. B

ST446452W specifications

The Seagate ST446452W is a notable entry in the world of hard drives, particularly renowned for its application in enterprise storage solutions during the mid-1990s. Designed primarily for servers and workstations, this drive was part of Seagate's formidable lineup, catering to business needs where reliability and performance were paramount.

With a physical size of 3.5 inches, the ST446452W hosts a storage capacity of 4.5 GB— an impressive figure for its time. This capacity enabled enterprises to store significant amounts of data, including critical applications and databases. The drive employs the SCSI (Small Computer System Interface) interface, specifically the SCSI-2 standard, which was commonplace during that era, allowing for speedy data transfer rates and the ability to connect multiple drives in a single setup.

The Seagate ST446452W features a rotational speed of 7200 RPM, contributing to its performance efficiency and response times. This speed, combined with an average seek time of around 9 milliseconds, positioned the ST446452W as a competitive option for database applications, file servers, and other data-intensive tasks.

One of the key technologies employed in the ST446452W is the use of magneto-resistive (MR) head technology. This advancement allowed for improved data density, ultimately enhancing the drive’s ability to read and write data at lower error rates. The drive also features a buffer cache, which serves to improve data throughput by temporarily storing frequently accessed data, minimizing seek times.

With its robust construction and reputation for reliability, the Seagate ST446452W proved to be a trusted choice for IT professionals seeking longevity in their storage solutions. Its design included features such as internal shock mounting and thermal management systems to ensure optimal performance under various conditions. These characteristics made the ST446452W an ideal candidate for mission-critical applications where downtime needed to be minimized.

In conclusion, the Seagate ST446452W encapsulates the technological advancements and engineering prowess of its time. Its integration of SCSI interface technology, high RPM speeds, and innovative data management features cemented its place in the legacy of data storage solutions, laying groundwork for subsequent generations of hard drives. Though it may be considered obsolete in today’s context, the ST446452W remains a significant reference point in the evolution of hard drive technologies.
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