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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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Table of Contents
Related Manuals for Seagate ELITE 23
Summary of Contents for Seagate ELITE 23
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Page 1: Installation Guide
• • • • • • • • • • • • • • • • • • • • • • • • • • Elite 23 • • • • • • • • • • • • • • • • • • • • • • • • • •... -
Page 2: Table Of Contents
©1996 Seagate Technology, Inc. All rights reserved Publication Number: 83329130, Rev. A September 1996 Seagate, Seagate Technology, and the Seagate logo are regis- tered trademarks of Seagate Technology, Inc. Elite, SeaFAX, SeaFONE, SeaNET, SeaTDD, and SeaBOARD are either trade- marks or registered trademarks of Seagate Technology, Inc. All other trademarks or registered trademarks are the propery of their respective owners. -
Page 3: Preface
Elite 23 Installation Guide, Rev. A 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). -
Page 4: Important Safety Information And Precautions
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. - Page 5 UL1950, EN60950, CSA C22.2 950- M89, 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.
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Page 6: Wichtige Sicherheitshinweise
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. - Page 7 Elite 23 Installation Guide, Rev. A • 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.
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Page 8: European Union Compliance
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. - Page 9 • 3.5-inch Floppy Disc Drive • Keyboard • Monitor/Display Although the test system with this Seagate model complies to the directives, we cannot guarantee that all systems will comply. The computer manufacturer or system integrator shall confirm EMC compliance and provide CE Marking for their product.
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Page 10: Technical Support Services
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. - Page 11 Online technical support for Seagate products is available on CompuServe. To access our technical support forum, type go seagate . This forum provides information similar to that found on SeaBOARD. In addition, you can type questions or browse through previous questions and answers on the forum mes-...
- Page 12 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...
- Page 13 Elite 23 Installation Guide, Rev. A 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 (ST xxxx ). There are several technical support phone numbers available for various Seagate products.
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Page 14: General Description
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. - Page 15 Elite 23 Installation Guide, Rev. A Table 1: Drive characteristics Interface UltraSCSI Capacity Unformatted 29.6 Gbytes Formatted 23.4 Gbytes Recording Cylinders (user) 6,880 Read/write data heads Servo heads Embedded Seek time (typical) Average read 13.2 msec Average write 14.2 msec...
- Page 16 See the +12V current profile in the Elite 23 Product Manual (publication number 83329140). This condition occurs when the Motor Start option is enabled and the drive has not yet received a Start Motor command.
- Page 17 Where multiple units are powered on simultaneously, be sure the peak starting current is available to each device. No terminator power. See 11.7.3.4 in the Elite 23 Product Manual. Table 3: Dimensions of the drive...
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Page 18: Initial Setup Information
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. - Page 19 SCAM compliant system. Most Elite 23 disc drives are factory set with the SCSI ID set at 0. To change the SCSI ID, refer to the appropriate drive section for your model.
- Page 20 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 connected to your sys- tem using the SCSI bus.
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Page 21: Terminator Power
Elite 23 Installation Guide, Rev. A For information about how to terminate your drive, refer to the appropriate drive-specific section. Internal SCSI cable Internal Internal Controller SCSI device SCSI device Terminate Internal SCSI cable External SCSI cable Internal Internal External... - Page 22 Elite 23 Installation Guide, Rev. A Figures 3a, 3b, 3c, and 3d show typical drive connections. The following table lists the maximum cable lengths and number of devices with single-ended I/O circuits allowed on a daisy-chain cable for 5 and 20 Mbytes/sec I/O data transfer rates.
- Page 23 Elite 23 Installation Guide, Rev. A Figure 3a. Fifty-pin I/O connection to drive Figure 3b. Sixty-eight pin connection to drive...
- Page 24 Elite 23 Installation Guide, Rev. A “N” Model Drive *SCSI ID X (or last drive) *“X” means up to ID6 or the maximum allowable number Additional SCSI ID 1 of devices on the SCSI bus. SCSI devices See Table 1.
- Page 25 Elite 23 Installation Guide, Rev. A “W” Model “WD” Model Drive Drive Note: Do not mix “W” and “WD” *SCSI ID X Terminator model drives on (or last drive) Module the daisy chain. Additional SCSI devices SCSI ID 1 *“X” means up to ID15 or the maximum allowable number of devices on the SCSI bus.
- Page 26 Elite 23 Installation Guide, Rev. A Providing adequate cooling The enclosure design must ensure adequate cooling for the drive. The maximum ambient temperature is 50 C. The drive’s product manual (83329140) describes how to evalu- ate the air-flow design. The evaluation consists of ensuring that the case temperature of certain critical components remains within acceptable limits during drive operation.
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Page 27: Kühlung Des Systems
Die Gehäusekonstruktion muß eine ausreichende Kühlung des Laufwerkes gewährleisten. Die Umgebungstemperatur darf maximal 50 C betragen. Die Produkthandbuch Elite 23 (Dokument 83329140) enthalten Anweisungen zur Beurteilung der Luftstromkonstruktion. Die Beurteilung muß sicherstellen, daß sich die Gehäusetemperatur bestimmter kritischer Komponenten bei Laufwerkbetrieb innerh- alb zugelassener Grenzen hält. - Page 28 Elite 23 Installation Guide, Rev. A Above unit Über der Einheit Under unit Unter der Einheit Note. Air flows in the direction shown (back to front) or in reverse direction (front to back) Hinweis. Luftstrom in der angezeigten Richtung (von vorne nach hinten) oder in umgekehrter...
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Page 29: Installation Des Laufwerkes Und Anschluß Der Kabel
Elite 23 Installation Guide, Rev. A Mounting the drive and connecting cables Do not touch the connector pins or any components on the con- trol board without observing static-discharge precautions. Always handle the drive by the frame only. The drive may be mounted in any orientation (horizontally, verti- cally, and any combination thereof);... - Page 30 Elite 23 Installation Guide, Rev. A Befestigen Sie das Laufwerk mit vier 6-32-UNC-Schrauben am Gehäuse des Host-Systems. Die beiden Seiten des Laufwerkes sind mit jeweils zwei Befestigungslöchern versehen, die Unterseite des Laufwerkes weist vier weitere Befestigungslöcher auf. Gemessen von der Außenfläche des Gehäuses dürfen die Schrauben maximal 4,318 mm in die Befestigungslöcher...
- Page 31 Elite 23 Installation Guide, Rev. A defined in IEC 950. Figure 5 provides the pin information for the DC power connector. To connect the DC power cable to the drive, simply insert the cable end into the drive’s DC power connector.
- Page 32 Elite 23 Installation Guide, Rev. A Note. Signal ground on the printed circuit board assembly (PCB) and the head and disc assembly (HDA) are con- nected together in this drive and you cannot separate them. Ensure the equipment in which you have mounted the drive is connected directly to the HDA.
- Page 33 Elite 23 Installation Guide, Rev. A elektromagnetische Strahlung fällt in den Zuständigkeits- bereich des Systemdesigners. Replace the host system’s cover. Setzen Sie das Gehäuseoberteil des Host-Systems wieder auf.
- Page 34 Elite 23 Installation Guide, Rev. A Notes: Mounting holes two on each side, 6-32 UNC. Max screw length into side of HDA 0.17 in. (4.318 mm). Mounting holes four on bottom, 6-32 UNC. Max screw length into bottom of drive 0.18 in. (4.572 mm).
- Page 35 Boot the system from a system floppy disc or from a previ- ously installed hard disc drive if there is one. Format the disc drive. Elite 23 disc drives are designed to operate with a variety of operating systems. Please refer to your system or SCSI controller manual for information about formatting and setting up the drive.
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Page 36: N Drives Section
Elite 23 Installation Guide, Rev. A N drives Setting the SCSI ID jumpers N/ND drives section Use the J4A connector to set the SCSI ID (see Figure 7) on model ST423451N. To change the SCSI ID, install jumpers on the appropriate pins as shown in the illustration. - Page 37 Elite 23 Installation Guide, Rev. A N drives Terminating the drive ST423451N drives are terminated with permanently mounted IC active terminators. If you install one of these drives and it is not on the end of the SCSI bus, disable the terminators by removing the TE jumper from pins 19 and 20 of connector J4A (see Figure 7).
- Page 38 Elite 23 Installation Guide, Rev. A N drives Terminator power There are three possible terminator power configurations for ST423451N drives (see Figure 9). You will not normally need to change this option and can leave the drive configured as it was shipped from the factory.
- Page 39 Elite 23 Installation Guide, Rev. A N drives Other applicable jumper options Several other jumper options are available as illustrated in Fig- ure 10. Pin 1 Pin 1 Pin 1 Spinup Delay Option (DS) Immediate spinup (if the Start Command...
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Page 40: W/Wd Drives Section
Elite 23 Installation Guide, Rev. A W/WD drives Setting the SCSI ID jumpers W/WD drives section Use the J4A jumper block to set the SCSI ID (Figure 11) on mod- els ST423451W/WD. To change the SCSI ID, install jumpers on the appropriate pins as shown in the illustration. - Page 41 Elite 23 Installation Guide, Rev. A W/WD drives Terminating the drive ST423451W drives are terminated with permanently mounted IC active terminators. If you install one of these drives and it is not on the end of the SCSI bus, disable the terminators by removing the TE jumper from pins 19 and 20 of connector J4A.
- Page 42 Elite 23 Installation Guide, Rev. A W/WD drives Terminator power There are three possible terminator power configurations for ST423451W drives (see Figure 13). You will not normally need to change this option and can leave the drive configured as it was shipped from the factory.
- Page 43 Elite 23 Installation Guide, Rev. A W/WD drives Other applicable jumper options Other option jumpers are available as illustrated below. Pin 1 Pin 1 Pin 1 Spinup Delay Option (DS) Immediate spinup (if the Start Command option jumper is disconnected)
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Page 44: All Drives
Elite 23 Installation Guide, Rev. A All drives Active, Ready, and Fault indicators The Active, Ready, and Fault LED indicator connections are shown below. Pin 1 SCSI I/O Connector Pin 1 DC Power Connector Pin 18 Pin 16 Pin 1... - Page 48 Seagate Technology, Inc. 920 Disc Drive, Scotts Valley, CA 95066-4544, USA Publication Number: 83329130, Rev. A, Printed in USA...