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Elite 23
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Disc Drive
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ST423451N/W/WD
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Installation Guide
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Contents Preface ........................................................................................1 Electrostatic discharge protection................................................1 Important safety information and precautions..............................2 Wichtige Sicherheitshinweise ......................................................4 European Union Compliance.......................................................6 Technical support services .......................................
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Elite 23 Installation Guide, Rev. A 1 Preface This manual contains information for users of the Seagate® ST423451 Elite 23 SCSI disc drives. It provides support ser- vices, performance specifications, and initial setup information. Additional information is available in the Elite 23 Product Manual (part number 83329140). Contact your Seagate sales represen- tative if you need to order this publication. Electrostatic discharge protection Caution. Removal of circuit boards by personnel not perform
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2 Elite 23 Installation Guide, Rev. A • Turn off the power before removing or installing the DC power cable. • Do not remove any circuit boards from the drive. • Never use an ohmmeter on any circuit boards. • When installing the drive on a carrier or tray, discharge the carrier or tray prior to inserting it into the system. 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
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Elite 23 Installation Guide, Rev. A 3 • Follow the precautions listed above in “Electrostatic discharge protection.” • Do not remove any circuit boards from the drive. 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. • Return the entire drive for depot repair if the HDA is defective. • Do not attempt to disassemble the HDA. It is not field repair- able.
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4 Elite 23 Installation Guide, Rev. A through the Seagate Safety Department to assist the subsystem designer. Wichtige Sicherheitshinweise Vorsicht. Beim Testen des Laufwerks auf dem Prüftisch ist Fremdbelüftung vorzusehen, um eine ausreichende Kühlung der Laufwerkkomponenten sicherzustellen. Verwenden Sie geeignete Sicherheits- um den sicheren, zuver- lässigen Betrieb dieser Einheit zu gewährleisten. Die Verfahren in diesem Handbuch und die Aufkleber auf dem Gerät enthalten Warn- und Vorsichts
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Elite 23 Installation Guide, Rev. A 5 • Beachten Sie alle Warn- und Vorsichtshinweise in diesem Handbuch. • Treffen Sie beim Betrieb, bei der Installation oder bei der Entfernung der Einheit angemessene Sicherheitsvorkehrun- gen. • Wenn eine Einheit unter Spannung steht, gehen Sie bei der Fehlerdiagnose besonders vorsichtig vor. Schalten Sie die Einheit aus, bevor Sie mit den Installations-und Entfernung- sarbeiten beginnen. • Wenn das Laufwerk in einem Einbaugestell oder Gehäuse montiert ist, s
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6 Elite 23 Installation Guide, Rev. A digen hat eine Beschädigung der Komponenten und Erlöschen des Garantieanspruchs zur Folge. Als Teilkomponente ist dieses Laufwerk für die Installation und den Betrieb in Übereinstimmung mit UL 1950, EN60950, CSA C22.2 950-M89 und VDE0805 vorgesehen. Seagate ist ständig bemüht, die Zulassungsfähigkeit von Seagate-Produkten im Rahmen der gegenwärtig geltenden Standards zu gewährleisten. Zu den typischen Anwendungen dieser Festplattenwerke zählen Systemeinbau
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Elite 23 Installation Guide, Rev. A 7 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. Seagate uses an independent laboratory to confirm compliance to the above directives. The drive was tested in a representative system for typical applications. The selected system represents the most popular characteristics for test platforms. The system configurations include: • 486, Pentium, and PowerPC Microprocessors • 3.5-inch Flop
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8 Elite 23 Installation Guide, Rev. A Technical support services If you need assistance installing your drive, consult your dealer. Dealers are familiar with their unique system configurations and can help you with system conflicts and other technical issues. If you need additional assistance with your Seagate drive or other Seagate products, use one of the Seagate technical support ser- vices listed below. SeaFONE at 1-800-SEAGATE (1-800-732-4283) Seagate’s 800 number allows toll-free access to
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Elite 23 Installation Guide, Rev. A 9 SeaBOARD SeaBOARD is a computer bulletin board system that contains information about Seagate Technology disc and tape drive prod- ucts and is available 24 hours daily. Set your communications software to eight data bits, no parity, and one stop bit (8-N-1). SeaBOARD phone numbers are listed in the following table. BBS Location Modem number United States Disc: 408-434-1081; Tape: 408-456-4415 England 44-1628-478011 France 33 1-48 25 35 95 Germany 49-89-140-
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10 Elite 23 Installation Guide, Rev. A Seagate Technology FAX services SeaFAX You can use a touch-tone telephone to access Seagate’s auto- mated FAX system to receive technical support information by return FAX. This service is available 24 hours daily. Location Telephone number United States 1-800-SEAGATE or 408-456-4496 England 44-1628-894084 Australia 61-2-9756-5170 Seagate technical support FAX You can FAX questions or comments to technical support spe- cialists 24 hours daily. Responses are
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Elite 23 Installation Guide, Rev. A 11 Seagate technical support line You can talk to a technical support specialist during business hours Monday through Friday for one-on-one technical help. Before calling, note your system configuration and drive model number (STxxxx). There are several technical support phone numbers available for various Seagate products. Location Telephone number United States Please dial 1-800-SEAGATE for the specific product telephone number. (6:00 A.M.–5:00 P.M., M–F) E
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12 Elite 23 Installation Guide, Rev. A General description Elite 23 SCSI disc drives are high-speed, random-access digital- data storage devices. The drive is a component for installation in an enclosure designed for the drive. This is often a rack within the system or an external enclosure designed to house one or more disc drives or other peripheral units. In either case, the disc drive must receive adequate cooling (refer to “Providing adequate cooling”) and it must be sufficiently grounded
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Elite 23 Installation Guide, Rev. A 13 Table 1: Drive characteristics 1 Interface UltraSCSI Capacity Unformatted 29.6 Gbytes 2 Formatted 23.4 Gbytes Recording Cylinders (user) 6,880 Read/write data heads 28 Servo heads Embedded 3 Seek time (typical) Average read 13.2 msec Average write 14.2 msec Disc rotation r/min 5,400 +0.5% Average latency 5.55 msec Internal transfer rate 85.9 to 123 (Mbits/sec, variable with zone) Max sync. SCSI transfer rate N 20 Mbytes/sec W/WD 40 Mbytes/sec Multi-segmente
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14 Elite 23 Installation Guide, Rev. A Table 2: DC power requirements Single-ended Differential , , 8 10 8 8 10 8 +5V +12V +5V +12V 5 2 2 Voltage regulation ± 5% ± 5% ± 5% ± 5% Amps Maximum starting current 3, 6, 9 Peak DC 1.0 4.8 1.05 4.8 1, 4 Delayed motor start (max) .85 .1 .85 .1 Peak operating current 1 Typical DC .98 1.6 1.2 1.6 7 Maximum (peak) 1.1 2.8 1.95 2.8 1 Measured with an average reading DC ammeter. Instanta- neous +12V current peaks will exceed these values. 2 A –10% tolerance
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Elite 23 Installation Guide, Rev. A 15 6 At power-up, the motor current regulator limits the +12V cur- rent to an average value of less than 4.8A, although instanta- neous peaks may exceed this value. These peaks should measure 5 msec duration or less. 7 Minimum current loading for each supply voltage is not less than 4% of the maximum operating current shown. 8 Use separate ground returns for +5V and +12V supplies. 9 Where power is provided to multiple drives from a common supply, carefully con
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16 Elite 23 Installation Guide, Rev. A Initial setup information The general information beginning on this page applies to all of the Elite 23 drive models. After reading the general information topics, refer to the appropriate drive-specific section listed below for additional information about configuring and installing your particular model. Drive models Page ST423451N 34 ST423451W ST423451WD 38 All drives (LED indicator connections) 42 General information The following general information to
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Elite 23 Installation Guide, Rev. A 17 SCSI ID jumpers Each device on the SCSI chain must have a unique SCSI ID. The host system’s SCSI controller usually uses the ID that has the highest priority interrupt in the SCSI I/O system. This is always ID7. ID0 is lowest priority in an 8-bit I/O system. ID8 is lowest priority in a 16-bit I/O system. The lower priority SCSI IDs are normally used for other SCSI devices such as this Elite disc drive. Note. Most SCSI controllers (host adapters) allow you t
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18 Elite 23 Installation Guide, Rev. A the case, change the ID so that each device on the SCSI chain has its own unique ID. Also check your system or controller user’s manual to ensure that you have not violated its SCSI ID numbering recommendations. Drive termination If you are installing a Elite 23 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 co
