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Barracuda 50
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Disc Drive
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ST150176LW/LC
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Installation Guide
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Contents Preface ..................................................................................... 1 Electrostatic discharge protection ............................................ 2 Important safety information and precautions .......................... 3 Wichtige Sicherheitshinweise................................................... 5 Regulatory agency compliance ................................................ 8 General description .........................................................
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Barracuda 50 Installation Guide, Rev. A 1 Preface This manual contains handling information, support services, performance specifications, and installation information for Seagate® Barracuda 50 SCSI disc drives. Although you can jump ahead to the installation instructions to get up and running quickly, you may want to read the “General description” section beginning on page 10 to learn more about this drive’s multimode capabilities, data bus details, specifica- tions, and cooling requirements. A
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2 Barracuda 50 Installation Guide, Rev. A Handling precautions • Disc drives are fragile. Do not drop or jar the drive. Use a padded surface during installation to avoid damaging the drive. • Keep the drive in its antistatic bag until you are ready to install it. • Protect the drive from static discharge by making sure you are well grounded before touching the drive. We recommend wearing a grounded wrist strap (Seagate part number 12263496) throughout the installation process. Do not touch the c
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Barracuda 50 Installation Guide, Rev. A 3 as some resistors and capacitors, may be damaged or degraded by exposure to static electricity. Electrostatic damage to electronic devices may be caused by the direct discharge of a charged conductor or by exposure to the static fields surrounding charged objects. To avoid damaging drive electronic assemblies, observe the following precautions when installing or servicing the drive: • Ground yourself to the drive whenever the drive electronics are or wil
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4 Barracuda 50 Installation Guide, Rev. A lowed to minimize or eliminate the risk of personal injury. The warnings point out conditions or practices that may endanger you or others. The cautions point out conditions or practices that may damage the unit, possibly making it unsafe for use. Always observe the following warnings and precautions: • Follow all cautions and warnings in the procedures. • Use sound safety practices when operating, installing, or removing the unit. • Use caution when tro
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Barracuda 50 Installation Guide, Rev. A 5 As a component, this drive is designed to be installed and oper- ated in accordance with UL1950, EN60950, CAN/CSA C22.2 950-M95, and VDE0805. Seagate takes all reasonable steps to ensure that its products are certifiable to currently accepted standards. Typical applica- tions of these disc drives include customer packaging and sub- system design. Safety agencies conditionally certify component assemblies, such as the Barracuda disc drive, based on their
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6 Barracuda 50 Installation Guide, Rev. A sam, die Sie oder andere gefährden könnten. Die Vorsichtshinweise machen auf Situationen oder Praktiken aufmerksam, die Einheit beschädigen können, so daß deren Gebrauch mit Risiko behaftet ist. Die Warn- und Vorsichtshinweise sind nicht allumfassend! Es ist uns einfach nicht möglich, alle Wartungsmethoden oder die eventuellen Risiken jeder Methode zu kennen, zu beurteilen und Sie entsprech- end zu beraten. Aus diesem Grund haben wir auf eine derartige
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Barracuda 50 Installation Guide, Rev. A 7 chädigung der Komponenten und Erlöschen des Garantieanspruchs führen. • Die vormontierte Kopf- und Festplatteneinheit (HDA) nicht aus dem Laufwerkgehäuse nehmen! Falls die HDA beschädigt ist, schicken Sie das gesamte Laufwerk zur Reparatur ein. • Die HDA ist nicht vor Ort reparierbar und darf nicht auseinander- genommen werden! Öffnen der versiegelten HDA durch andere Per- sonen als die für die werkseitige Reparatur zuständigen hat eine Beschädigung der
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8 Barracuda 50 Installation Guide, Rev. A Regulatory agency compliance Electromagnetic susceptibility As a component assembly, the drive is not required to meet any susceptibility performance requirements. It is the responsibility of those integrating the drive within their systems to perform those tests required and design their system to ensure that equipment operating in the same system as the drive or external to the sys- tem does not adversely affect the performance of the drive. See DC pow
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Barracuda 50 Installation Guide, Rev. A 9 Electromagnetic compliance for the European Union If this model has the CE Marking it complies with the European Union requirements of the Electromagnetic Compatibility Direc- tive 89/336/EEC of 03 May 1989 as amended by Directive 92/31/ EEC of 28 April 1992 and Directive 93/68/EEC of 22 July 1993. Australian C-Tick If this model has the C-Tick Marking it complies with the Austra- lia/New Zealand Standard AS/NZS3548 1995 and meets the Electromagnetic Com
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10 Barracuda 50 Installation Guide, Rev. A General description Barracuda 50 SCSI disc drives are high-speed, random-access digital-data storage devices capable of operating in single-ended (SE) or low voltage differential (LVD) modes. This multimode capability allows you to use this drive in systems that use the traditional SE technology or in LVD-capable sys- tems. Figure 1. Barracuda 50 family drive (LW model shown) This drive should be mounted in an enclosure designed for the drive. This is
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Barracuda 50 Installation Guide, Rev. A 11 Single-ended and low voltage differential modes This drive incorporates two different transceivers to allow you to use it in systems which use single-ended (SE) drivers and receivers, or in low voltage differential (LVD) capable systems which use LVD drivers and receivers. The primary benefits of LVD technology • Faster transfer rates. • Reduces power consumption. • Increases allowable cable lengths. • Improves device connectivity. You can configure the
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12 Barracuda 50 Installation Guide, Rev. A Data bus widths These drives have a wide (16-bit) SCSI data bus. You can use these drives on a non-wide (8-bit) data bus if you provide proper termination to the upper eight data lines. This is often referred to as providing “high-9 termination” (the other bit is for parity). The following table lists the maximum cable lengths and number of devices using single-ended and LVD I/O circuits. Table 1. SE and LVD bus configurations Maximum SCSI number
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Barracuda 50 Installation Guide, Rev. A 13 by the fans either pushing or drawing air. The overall flow pattern can be directed from front to back, back to front, or side to side. Kühlung des Systems Die Gehäusekonstruktion muß eine ausreichende Kühlung des Lauf- werkes gewährleisten. Die Umgebungstemperatur darf maximal 50°C betragen. Die Produkthandbuch Barracuda 50 (Dokument 83329471) enthalten Anweisungen zur Beurteilung der Luftstromkonstruktion. Die Beurteilung muß sicherstellen, daß sich d
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14 Barracuda 50 Installation Guide, Rev. A . Above unit Under unit Note. Air flows in the direction shown (back to front) or in reverse direction (front to back) Above unit Under unit Note. Air flows in the direction shown or in reverse direction (side to side) Figure 2. Suggested air flow Abbildung 2. Empfohlener Luftstromverlauf
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Barracuda 50 Installation Guide, Rev. A 15 Characteristics ST150176LW/LC 1 Interface Ultra2 SCSI Capacity 2 Formatted (Gbytes) 50.0 Recording Cylinders (user) 12,024 Read/write data heads 22 Avg bytes/track 189.28 3 Access time Average read (msec) 7.6 Average write (msec) 8.4 Disc rotation RPM 7,184 Average latency (msec) 4.17 Synchronous data transfer rate Maximum instantaneous (Mbytes/ 40 (SE mode) sec) 80 (LVD mode) Asynchronous data transfer rate Maximum instantaneous (2 bytes wide) (Mbyte
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16 Barracuda 50 Installation Guide, Rev. A Low voltage Single-ended (SE) differential mode (LVD) mode 1 +5 V+12 V +5 V+12 V DC power requirements (±5%) ST150176LW/LC Maximum start current 0.76 2.6 0.77 2.6 Maximum operating current 0.77 1.17 0.81 1.17 Average idle current 0.68 0.68 0.69 0.68 1. For more detailed power information, refer to the Barracuda 50 Product Manual, publication number 83329471.
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Barracuda 50 Installation Guide, Rev. A 17 How to install the drive This installation guide provides step-by-step instructions to make your drive installation as easy as possible. Follow the installation steps listed for your drive model as listed below: ST150176LW (use the installation steps beginning below). ST150176LC (use the installation steps beginning on page 30). ST150176LW installation 1. Set the SCSI ID on the drive. Determine which SCSI IDs are already being used in the system and t
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18 Barracuda 50 Installation Guide, Rev. A Drive Front Jumper Plug (enlarged to show detail) Pin 1 J6 [1] L R Reserved E E A A A A D S 3 2 1 0 SCSI ID = 0 (default) SCSI ID = 1 SCSI ID = 2 SCSI ID = 3 SCSI ID = 4 SCSI ID = 5 SCSI ID = 6 SCSI ID = 7 [4] SCSI ID = 8 SCSI ID = 9 SCSI ID = 10 SCSI ID = 11 SCSI ID = 12 SCSI ID = 13 SCSI ID = 14 SCSI ID = 15 Figure 3. Setting the SCSI ID on ST150176LW drives
