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Seagate CHEETAH 18 ST118202LW/LC Installation Manual

Scsi disc drives
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Cheetah 18
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Disc Drive
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ST118202LW/LC
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Installation Guide

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Summary of Contents for Seagate CHEETAH 18 ST118202LW/LC

  • Page 1: Installation Guide

    • • • • • • • • • • • • • • • • • • • • • • • • • • Cheetah 18 • • • • • • • • • • • • • • • • • • • • • • • • • • Disc Drive •...

  • Page 2: Table Of Contents

    Seagate Technology, Inc. Cheetah, SeaFAX, SeaFONE, SeaBOARD, and SeaTDD are either trademarks or registered trademarks of Seagate Technology, Inc. or one of its subsidiaries. All other trademarks or registered trademarks are the property of their respective owners.

  • Page 3: Preface

    Cheetah 18 Installation Guide, Rev. A Preface This manual contains information for users of the Seagate® Cheetah 18 SCSI disc drives. It provides support services, per- formance specifications, and initial setup information. Additional information is available in the Cheetah 18 Product Manual (part number 83329260).

  • Page 4: Important Safety Information And Precautions

    • 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 car- rier or tray prior to inserting it into the system.
  • Page 5 As a component, this drive is designed to be installed and oper- ated in accordance with UL1950, EN60950, CAN/CSA C22.2 950-95, 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.

  • Page 6: Wichtige Sicherheitshinweise

    This unit is a component part and as such is not meant to com- ply with FCC or similar national requirements as a stand-alone unit. Engineering radiated emissions test results are available through the Seagate Safety Department to assist the subsystem designer. Wichtige Sicherheitshinweise Vorsicht.
  • Page 7 Cheetah 18 Installation Guide, Rev. A Beachten Sie in jedem Fall die folgenden Warn-und Vorsicht- shinweise: • 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.
  • Page 8 Als Teilkomponente ist dieses Laufwerk für die Installation und den Betrieb in Übereinstimmung mit UL 1950, EN60950, CAN/ CSA C22.2 950-95 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 durch den...

  • Page 9: Regulatory Agency Compliance

    • 3.5-inch floppy disc drive • Keyboard • Monitor/display • Printer • External modem • Mouse Although the test system with this Seagate model complies to the directives/standard(s), we cannot guarantee that all systems will comply. The computer manufacturer or system integrator...
  • Page 10 Cheetah 18 Installation Guide, Rev. A shall confirm EMC compliance and provide CE Marking and C- Tick Marking for their product. 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.

  • Page 11: Seagate Technology Support Services

    Cheetah 18 Installation Guide, Rev. A Seagate Technology support services Presales support To determine which Seagate products are best suited for your specific application, contact us about configuration and compati- bility and for current product availability. You can leave a voice message after business hours or send an e-mail message—we...
  • Page 12 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- sages.
  • Page 13 662-531-8111 44-1628-478011 Disc: 405-936-1600; Tape: 405-936-1630 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 Phone number...
  • Page 14 Location Phone number Germany 49-89-1430-5100 Hong Kong 852-2368 7173 Japan 81-3-5462-2979 Korea 82-2-556-4251/7395 Singapore 65-488-7528 Taiwan 886-2-2715-2923 44-1628-890660 Disc: 405-936-1685; Tape: 405-936-1683 Direct-support services Technical support For one-on-one help, you can talk to a technical support special- ist during local business hours. Before calling, note your system configuration and drive model number (ST xxxx ).
  • Page 15 Seagate service representative for warranty information. Other customers should contact their place of purchase. Seagate offers comprehensive customer support for all Seagate drives. These services are available worldwide. Location Asia Pacific and Australia Europe, Middle East,...
  • Page 16 Location Manufacturer’s representatives Brazil MA Informatica Canada Memofix Adtech Mexico Abicom Seamax SA DE CV Southern Europe Caesar Italia Cheetah 18 Installation Guide, Rev. A Phone number 55-21-516-6649 905-660-4936 905-812-8099 1-800-624-9857 525-546-4888 39-688-18149 FAX number 55-21-516-5280 905-660-8738 905-812-7807 525-546-4888 39-688-02103...

  • Page 17: General Description

    Cheetah 18 Installation Guide, Rev. A General description Cheetah 18 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. These two modes are offered to allow you to use this drive in systems that use the traditional SE technology or to use it in LVD-capable systems.
  • Page 18 Cheetah 18 Installation Guide, Rev. A Figure 1. Cheetah 18 family drive (ST118202LW shown)
  • Page 19 Cheetah 18 Installation Guide, Rev. A Characteristics Interface Capacity Unformatted (Gbytes) Formatted (Gbytes) Recording Cylinders (user) Read/write data heads Avg bytes/track Access time Average read (msec) Average write (msec) Disc rotation Average latency (msec) Synchronous data transfer rate Maximum instantaneous (Mbytes/sec) Asynchronous data transfer rate Maximum instantaneous (2 bytes wide) (Mbytes/sec)
  • Page 20 DC power requirements (±5%) Maximum start current Maximum operating current Average idle current For more detailed power information, refer to the Cheetah 18 Product Manual, publication number 83329260. Cheetah 18 Installation Guide, Rev. A ST118202LW/LC Single-ended (SE) mode +5 V +12 V 0.89A 2.5A...

  • Page 21: Initial Setup Information

    Cheetah 18 Installation Guide, Rev. A Initial setup information The general information beginning on this page applies to all of the Cheetah 18 drive models. After reading the general informa- tion topics, refer to the appropriate drive-specific section listed below for additional information about configuring and installing your particular model.
  • Page 22 Single-ended and low voltage differential modes This drive incorporates two different transceivers to allow you to use it in traditional systems which may use single-ended (SE) drivers and receivers, or to use it in low voltage differential (LVD) capable systems which use LVD drivers and receivers. You can configure the drive to switch between SE and LVD modes automatically or force it to operate in SE mode only as described later in this guide.
  • Page 23 Cheetah 18 Installation Guide, Rev. A Note. Most SCSI controllers (host adapters) allow you to skip a SCSI ID. For example, you can have ID0, ID1, and ID3 (skipping ID2). Other controllers do not allow this so be sure to refer to your system or controller user’s manual for details about its requirements for proper SCSI device installation.
  • Page 24 Drive termination If you are installing a Cheetah 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.
  • Page 25 Cheetah 18 Installation Guide, Rev. A ing the bus at the backpanel. For ST118202LW drives, use an in- line terminator on the cable. Internal SCSI device Internal SCSI cable Internal Internal SCSI device SCSI device Figure 2. SCSI bus termination Terminator power You usually will not need to change this option and can normally leave the drive configured as it was shipped from the factory.
  • Page 26 can use these wide drives on a standard (non-wide) 8-bit data bus if you provide proper termination to the upper 8-bit data lines. This is often referred to as providing “high-9 termina- tion.” Figures 3, 4, and 5 show typical drive connections. The following table lists the maximum cable lengths and number of devices using single-ended and LVD I/O circuits allowed on a daisy-chain cable for 10, 20, and 40 Mtransfers/sec I/O data...
  • Page 27 Cheetah 18 Installation Guide, Rev. A Figure 3. 68-pin I/O connection to drive (LW model) Figure 4. 80-pin I/O connection to drive (LC model)
  • Page 28 “LW” Model Drive Note: Do not mix “LW” and “WD” model drives on the daisy chain. SCSI ID 1 SCSI ID 0 [1] “X” means up to 15 or the maximum allowable number of devices on the SCSI bus. See system documentation and Table 1. [2] External terminator.
  • Page 29 Cheetah 18 Installation Guide, Rev. A 80-pin SCSI I/O Connector Pin 1 Note. This drive model plugs directly into a backplane connec- tor and therefore does not use cables. Figure 6. Drive model “LC” with single 80-pin I/O and power connector...
  • Page 30 Cheetah 18 Installation Guide, Rev. A Providing adequate cooling The enclosure design must ensure adequate cooling for the drive. The maximum ambient temperature allowed is 50 C. The drive’s product manual (83329260) 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.

  • Page 31: Kühlung Des Systems

    Cheetah 18 Installation Guide, Rev. A Kühlung des Systems Die Gehäusekonstruktion muß eine ausreichende Kühlung des Laufwerkes gewährleisten. Die Umgebungstemperatur darf max- imal 50 C betragen. Die Produkthandbuch Cheetah 18 (Dokument 83329260) enthalten Anweisungen zur Beurteilung der Luftstromkonstruk- tion. Die Beurteilung muß sicherstellen, daß sich die Gehäuse- t e m p e r a t u r b e s t i m m t e r k r i t i s c h e r Ko m p o n e n t e n b e i Laufwerkbetrieb innerhalb zugelassener Grenzen hält.
  • Page 32 Cheetah 18 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 7.

  • Page 33: Installation Des Laufwerkes Und Anschluß Der Kabel

    Cheetah 18 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 34 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 3,81 mm in die Befestigungslöcher des Gehüuses hineinragen.
  • Page 35 Cheetah 18 Installation Guide, Rev. A defined in IEC 950. Figure 8 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. Schließen Sie das SCSI-Kabel an den SCSI-Steckverbinder des Laufwerkes an.
  • Page 36 Note. Signal ground on the power control board assembly (PCBA) and the head and disc assembly (HDA) are con- nected together in this drive and you cannot separate them. The equipment in which you have mounted the drive is connected directly to the HDA and PCBA without electrically isolating shock mounts.
  • Page 37 Cheetah 18 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 38 Figure 9. Mounting configuration dimensions (LW model) Cheetah 18 Installation Guide, Rev. A Notes: Mounting holes are 6-32 UNC 2B, three on each side and four on the bottom. Max screw penetration into side of drive is 0.15 in. (3.81 mm). Max screw tightening torque is 6.0 in-lb (3.32 nm) with minimum full thread engagement of 0.12 in.
  • Page 39 Cheetah 18 Installation Guide, Rev. A Figure 10. Mounting configuration dimensions (LC model) Notes: -Z- -X- Mounting holes are 6-32 UNC 2B, three on each side and four on the bottom. Max screw penetration into side of drive is 0.15 in. (3.81 mm). Max screw tightening torque is 6.0 in-lb (3.32 nm) with minimum full thread engagement of 0.12 in.
  • Page 40 Note. Seagate is not responsible for lost user data. Turn on DC power. Boot the system from a system floppy disc or from a previ- ously installed hard disc drive if there is one.

  • Page 41: Lw Drives Section

    Cheetah 18 Installation Guide, Rev. A Setting the SCSI ID jumpers Use the J6 connector to set the SCSI ID (see Figure 11). To change the SCSI ID, install jumpers as shown in the illustration. Figure 11. Setting the SCSI ID on ST118202LW drives LW drives section Drive Front...
  • Page 42 LW drives Terminating the drive ST118202LW drives do not have internal terminators or any other way of adding internal termination to the drive. You must provide external termination to these drives when termination is required. This is normally done by adding an in-line terminator on the cable.
  • Page 43 Cheetah 18 Installation Guide, Rev. A Terminator power You can configure this drive to supply termination power to the SCSI bus by placing a jumper on J2 pins 1 and 2. The default setting is no jumper, meaning that some other source (other than this drive) is suppling termination power to the SCSI bus.
  • Page 44 LW drives Other applicable jumper options Several other jumper options are available as illustrated. Reserved Single-Ended Mode option Use single-ended or low voltage differential mode. Force the drive to operate only in single-ended mode. Delay Motor Start option (valid only if the Enable Motor Start jumper is not connected) Disable the Delay Motor Start option (default).
  • Page 45 Cheetah 18 Installation Guide, Rev. A 68 Pin SCSI I/O Connector SCSI Address A0 SCSI Address A1 SCSI Address A2 SCSI Address A3 No connection Fault LED* Vendor Unique* Reserved Activity LED* Ground These pins are driven low for 250 ms after PWR ON or RESET to allow jumper selectable SCSI ID as shown to the right.
  • Page 46 LW drives Drive Active indicator The drive Active LED indicator connections are shown below. Drive Front Jumper Plug (enlarged to show detail) Reserved Activity LED Reserved The shaded pins are shipped with a cover installed. Do not install jumpers on these pins. Retain the cover unless you install a 20-pin plug.

  • Page 47: Lc Drives Section

    Cheetah 18 Installation Guide, Rev. A Setting the SCSI ID jumpers The SCSI ID for ST118202LC drives is normally set over the SCSI bus by the host system. You can also use the J6 jumper block to set the SCSI ID (see Figure 16). Jumper Plug (enlarged to show detail)
  • Page 48 LC drives Terminating the drive LC model drives do not have internal terminators or any other way of adding internal termination to the drive. You must provide external termination to these drives when termination is required. Since this drive is designed to be plugged into a back- panel or other host enclosure without cabling, this is normally done by enabling termination on the backpanel or plane.
  • Page 49 Cheetah 18 Installation Guide, Rev. A Other applicable jumper options Other option jumpers are available as illustrated below. Reserved Single-Ended Mode option Use single-ended or low voltage differential mode. Force the drive to operate only in single-ended mode. Delay Motor Start option (valid only if the Enable Motor Start jumper is not connected) Disable the Delay Motor Start option (default).
  • Page 50 LC drives Drive Active indicator The drive Active LED indicator connections are shown below. Drive Front Jumper Plug (enlarged to show detail) Reserved Activity LED Reserved The shaded pins are shipped with a cover installed. Do not install jumpers on these pins. Retain the cover unless you install a 20-pin plug.
  • Page 52 Seagate Technology, Inc. 920 Disc Drive, Scotts Valley, CA 95066-4544, USA Publication Number: 83329250, Rev. A, Printed in USA...

This manual is also suitable for:

Cheetah 18St118202lwSt118202lc

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