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Elite Disc Drive
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ST43401N/ND
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ST43402ND
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User’s Manual
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Contents Preface ................................................................................................... iii Electrostatic discharge protection ....................................................... iii Important safety information and precautions ..................................... iv Wichtige Sicherheitshinweise ......................................................... vi Technical support services ............................................................. ix Section 1. Gener
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ST43401N/ND, ST43402ND User’s Manual, Rev. B iii Preface ® This manual contains information for users of Seagate ST43401N/ND and ST43402ND Elite™ disc drives. It provides instructions to all personnel who operate the drive and to customer engineers who install and check out the drive. Additional information is available in the reference manual (publication 83327730). Electrostatic discharge protection Caution. Removal of circuit boards by personnel not performing depot repair will damage compone
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iv ST43401N/ND, ST43402ND User’s Manual, Rev. B Important safety information and precautions Caution. Use forced-air ventilation when bench-testing the drive to ensure proper cooling of drive components. Use proper safety and repair techniques for safe, reliable operation of this unit. Service should be done only by qualified persons. We recommend the procedures in this manual as effective ways of servicing the unit. Some procedures require the use of special tools. For proper maintenance and sa
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ST43401N/ND and ST43402ND User’s Manual, Rev. B v • Do not remove any circuit boards from the drive chassis. Return the entire drive for depot repair if any circuit board is defective. Removal of circuit boards by personnel not performing depot repair will damage components and may void the warranty. • Do not remove the head and disc assembly (HDA) from the drive chassis. Return the entire drive for depot repair if the HDA is defective. • Do not attempt to disassemble the HDA. It is not field re
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vi ST43401N/ND, ST43402ND User’s Manual, Rev. B Wichtige Sicherheitshinweise Vorsicht. Beim Testen des Laufwerks auf dem Prüftisch ist Fremdbelüftung vorzusehen, um eine ausreichende Kühlung der Laufwerkkomponenten sicherzustellen. Verwenden Sie geeignete Sicherheits- und Reparaturverfahren, um den sicheren, zuverlässigen Betrieb dieser Einheit zu gewährleisten. Reparaturen dürfen nur von qualifiziertem Fachpersonal vorgenommen werden. Wir empfehlen die Verfahren in diesem Handbuch als effektive
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ST43401N/ND, ST43402ND User’s Manual, Rev. B vii • Tragen Sie Sicherheitsschuhe, wenn Sie schwere Teile aus- bzw. einbauen. • Wenn das Laufwerk in einem Einbaugestell oder Gehäuse montiert ist, sorgen Sie dafür, daß die Temperatur im Inneren des Gestells oder Gehäuses die für das Laufwerk vorgegebenen Grenzwerte nicht übersteigt. Wenn Einheiten vertikal gestapelt werden, achten Sie besonders auf den oberen Stapelbereich, da dort die Temperatur gewöhnlich am höchsten ist. • Befolgen Sie die oben
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viii ST43401N/ND, ST43402ND User’s Manual, Rev. B Dieses Gerät ist eine Baugruppe und unterliegt als solche nicht den Anforderungen der FCC oder ähnlicher nationaler Behörden für eigenständige. Technische Testergebnisse zu Frequenz- und Elektrizitätsemissionen sind für Designer von Untersystemen auf Anfrage von der Seagate- Sicherheitsabteilung erhältlich.
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ST43401N/ND, ST43402ND User’s Manual, Rev. B ix Technical support services Seagate Technology provides technical support literature and diagnostic utilities to authorized distributors. Please contact your dealer for technical support and installation troubleshooting. Product technical support is avail- able for all Seagate products by calling the SeaFAX™, SeaFONE™, SeaTDD™, or SeaBOARD™ services. These are toll calls if you dial from outside of the number’s local dialing area. SeaFAX: USA (408)
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x ST43401N/ND, ST43402ND User’s Manual, Rev. B Telephone Location number USA, Mexico, Latin America (408) 438-8771 England 44-62-847-8011 Germany 49-89-140-9331 Singapore 65-292-6973 Australia 61-2-756-2359 Canada (416) 856-5581 France 33-1-40-67-1034 Korea 82-2-556-7294
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ST43401N/ND, ST43402ND User’s Manual, Rev. B 1 Section 1. General description Seagate ST43401N/ND and ST43402ND Elite 3 disc drives are high speed, random access digital data storage devices. They communicate with an initiator using the fast and wide (16-bit) Small Computer System Interface (SCSI-2). The ST43401N/ND disc drive is shown in Figure 1, and the ST43402ND (dual port) disc drive is shown in Figure 2. Specifications for these drives are listed in Table 1 following the figures. The drive
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2 ST43401N/ND, ST43402ND User’s Manual, Rev. B Power
Control
Board Board Optional
Bezel Spindle Sync
Connector Remote Operator
Panel Connector I/O Board
Power DC Power
Connector Pin 1 Port B
I/O Connector Chassis Option
Head and Disc
Jumpers Port B
Assembly (HDA) Terminator
Option
Power Jumpers I/O
Port A
Board I/O Connector Port A
Terminator
Power Figure 2. The ST43402ND disc drive
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ST43401N/ND, ST43402ND User’s Manual, Rev. B 3 Table 1. Drive specifications Characteristics Conditions Specifications Size Dimensions See “Space requirements” in Section 2 Weight (drive only) 3.6 kg (8.0 lb) Interface Fast and wide (16-bit) SCSI-2 Recording Total capacity (unformatted) 3,554,871,600 bytes Bytes per track (unformatted) Inner track 49,000 bytes Outer track 72,800 bytes Formatted capacity* (256-byte sectors) 2,536,189,440 bytes (512-byte sectors) 2,912,484,864 bytes (1,024-byte se
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4 ST43401N/ND, ST43402ND User’s Manual, Rev. B continued from previous page Characteristics Conditions Specifications SCSI transfer rate, burst 20.0 Mbytes/sec max Seek time (time required Typical full 23.5 msec to move heads to a different Typical average 11.5 msec track address—excluding Typical one-track 1.7 msec SCSI I/O overhead) Typical access times Write Read msec msec Single track seek 1.7 0.9 Average seek 11.5 10.5 Maximum seek 23.5 22.5 Latency (time required Average 5.55 msec to reach
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ST43401N/ND, ST43402ND User’s Manual, Rev. B 5 The drive contains all the circuits and mechanical devices necessary to record data on and recover it from its discs. The drive requires DC voltage inputs from an external power supply, which you must supply. The DC power cable is available as an accessory. The ST43401N/ND drives consist of a head and disc assembly (HDA) with two circuit boards, and the ST43402ND drive consists of an HDA and three circuit boards. Each drive’s HDA and circuit boards
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6 ST43401N/ND, ST43402ND User’s Manual, Rev. B When the drive is not powered on, the heads rest on the disc surface in a preassigned landing zone beyond the data zone. The actuator automatically latches in this position at shutdown for moving or shipping protection. When the drive is activated to bring the discs up to speed, the heads fly on a cushion of air close to the disc surface. After arriving at the data track and selecting a head, the controller locates the portion of the track where the
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ST43401N/ND, ST43402ND User’s Manual, Rev. B 7 Section 2. Installation/Abschnitt 2. Installation The information contained in this section describes installation and initial checkout of the drive. Site requirements The site requirements considered are environment, airflow, space, power, grounding, and interface. Voraussetzungen am Aufstellungsort Zu den Voraussetzungen am Aufstellungsort gehören Umgebung, Luftfluß, Raum, Strombedingungen, Erdung und Schnittstelle. Environmental requirements All
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8 ST43401N/ND, ST43402ND User’s Manual, Rev. B Table 2. Environmental requirements Conditions Specifications Operating environment Temperature Range of 5°C to 50°C (41°F to 122°F) with a maximum change of 20°C (36°F) per hour Humidity Range of 5% to 95% relative A maximum wet bulb temperature of 26°C (79°F) Barometric pressure –305 m to 3,048 m (–1,000 ft to 10,000 ft) 104 kPa to 69 kPa (30 in Hg to 20 in Hg) Non-operating environment (unpacked) Temperature Range of –40°C to 60°C (–40°F to 140°F
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ST43401N/ND, ST43402ND User’s Manual, Rev. B 9 Tabelle 2. Umgebungsbedingungen des Laufwerkes Bedingungen Technische Daten Betriebsumgebung Temperatur 5°C bis 50°C mit einer maximalen Schwankung von 20°C pro Stunde Relative Luftfeuchtigkeit 5% bis 95% Maximale Naßthermometertemperatur von 26°C Luftdruck –305 m bis 3.048 m; 104 kPa bis 69 kPa Umgebungsbedingungen bei Nichtbetrieb (unverpackt) Temperatur –40°C bis 60°C mit einer maximalen Schwankung von 20°C pro Stunde Relative Luftfeuchtigkeit
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10 ST43401N/ND, ST43402ND User’s Manual, Rev. B Air-flow requirements The enclosure design must ensure adequate cooling for the drive. Note that the fan in the power supply cools only the power supply’s internal parts. The drive’s product specification (document 64403603) describes how to evaluate the air-flow design. The evaluation consists of ensuring that the case temperatures of certain critical components remain within acceptable limits during drive operation. We recommend orienting the dri
