• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • Cheetah 4LP • • • • • • • • • • Disc Drive • • • • • • • • • • ST34501N/W/WC/WD/DC • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • Installation Guide • • • • • • • • • • • • • • • •
Contents Preface......................................................................................... 1 Electrostatic discharge protection ................................................ 2 Important safety information and precautions.............................. 3 Wichtige Sicherheitshinweise ...................................................... 5 Regulatory agency compliance.................................................... 8 Seagate technical support services......................................
Cheetah 4LP Installation Guide, Rev. B 1 Preface This manual contains information for users of the Seagate® Cheetah 4LP SCSI disc drives. It provides support services, performance specifications, and initial setup information. Additional information is available in the Cheetah 4LP Product Manual (part number 83329120). Contact your Seagate sales representative if you need to order this publication. Attention.
2 Cheetah 4LP Installation Guide, Rev. B Electrostatic discharge protection Caution. Removal of circuit boards by personnel not performing depot repair will damage components and may void the warranty. All drive electronic assemblies are sensitive to static electricity, due to the electrostatically sensitive devices used within the drive circuitry.
Cheetah 4LP Installation Guide, Rev. B 3 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 techniques for safe, reliable operation of this unit. The procedures in this manual and labels on the unit contain warnings and cautions that must be carefully read and followed to minimize or eliminate the risk of personal injury.
4 Cheetah 4LP Installation Guide, Rev. B • Do not separate the head and disc assembly (HDA) from the PCB. Return the entire drive for depot repair if the HDA is defective. • Do not attempt to disassemble the HDA. It is not field repairable. If the sealed HDA is opened by personnel not performing depot repair, this will damage components and void the warranty. As a component, this drive is designed to be installed and operated in accordance with UL1950, EN60950, CSA C22.2 950M89, and VDE0805.
Cheetah 4LP Installation Guide, Rev. B 5 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, zuverlässigen Betrieb dieser Einheit zu gewährleisten. Die Verfahren in diesem Handbuch und die Aufkleber auf dem Gerät enthalten Warn- und Vorsichtshinweise.
6 Cheetah 4LP Installation Guide, Rev. B • Treffen Sie beim Betrieb, bei der Installation oder bei der Entfernung der Einheit angemessene Sicherheitsvorkehrungen. • 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 Entfernungsarbeiten beginnen.
Cheetah 4LP Installation Guide, Rev. B digen hat eine Beschädigung der Komponenten Erlöschen des Garantieanspruchs zur Folge. 7 und 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.
8 Cheetah 4LP Installation Guide, Rev. B 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 system does not adversely affect the performance of the drive.
Cheetah 4LP Installation Guide, Rev. B 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 Directive 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.
10 Cheetah 4LP Installation Guide, Rev. B Seagate 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 services listed below.
Cheetah 4LP Installation Guide, Rev. B 11 Seagate CompuServe forum 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 messages.
12 Cheetah 4LP Installation Guide, Rev. B FAX services SeaFAX® You can use a touch-tone telephone to access Seagate’s automated FAX system to receive technical support information by return FAX. This service is available 24 hours daily. Location Phone number Australia England USA 61-2-9756-5170 44-1628-894084 1-800-SEAGATE or 408-456-4496 Seagate technical support FAX You can FAX questions or comments to technical support specialists 24 hours daily. Responses are sent during business hours.
Cheetah 4LP Installation Guide, Rev. B 13 Direct-support services Seagate technical support For one-on-one help, you can talk to a technical support specialist during local business hours. Before calling, note your system configuration and drive model number (STxxxx). Location Phone number Australia England 61-2-9725-3366 (9:00 A.M. to 5:00 P.M., M–F) 44-1628-894083 (10:00 A.M. to 1:00 P.M., 2:00 P.M. to 5:00 P.M., M–F) 33 1-41 86 10 86 (9:30 A.M. to 12:30 P.M., 2:00 P.M. to 5:00 P.M.
14 Cheetah 4LP Installation Guide, Rev. B Customer service centers Seagate direct OEM, Distribution, and Systems Integrator customers should contact their 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.
Cheetah 4LP Installation Guide, Rev. B 15 General description Cheetah 4LP 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.
16 Cheetah 4LP Installation Guide, Rev. B Table 1. Drive characteristics Characteristics of the various drives covered by this manual are given in the following tables. Interface type: Cylinders (user accessable): Disk rotation: Avg. latency: Seek time2 Average read (typical) Average write (typical) Internal transfer rate (variable with zone) Multi-segmented cache 1 Also SCSI Fast-20 (also called Ultra SCSI1) 6,526 10,033 r/min ±0.5% 2.99 msec 7.7 msec 8.
Cheetah 4LP Installation Guide, Rev. B 17 Table 1a. Additional drive characteristics Legend for following table listing other drive characteristics: A = capacity, unformatted, Gbytes B = capacity, formatted, Gbytes1 C = number of read/write data heads D = max.
18 Table 2. Cheetah 4LP Installation Guide, Rev. B DC power requirements (Amps) ST34501 N, W, WC models WD, DC models +5V8 +12V8 +5V8, 10 +12V8 Voltage regulation5 ± 5% ± 5%2 ± 5% ± 5%2 Max. start current Peak DC 3, 6, 9 0.88 2.2 0.89 2.2 Delayed motor start (max)1, 4 0.81 0.08 0.72 0.08 Peak operating current 0.85 Typical DC 1 Maximum DC 1 0.9 Maximum (peak) AC 7 1.0 0.89 0.94 1.98 1.05 1.09 — 0.89 0.94 1.98 1 Measured with an average reading DC ammeter.
Cheetah 4LP Installation Guide, Rev. B 19 5 See “Conducted noise immunity” in the Cheetah 4LP Product Manual. The specified voltage tolerance is inclusive of ripple, noise, and transient response. 6 At power-up, the motor current regulator limits the +12V current to an average value of less than value shown in table, although instantaneous peaks may exceed this value. These peaks should measure 5 msec duration or less.
20 Cheetah 4LP Installation Guide, Rev. B Initial setup information The general information beginning on this page applies to all of the Cheetah 4LP 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.
Cheetah 4LP Installation Guide, Rev. B 21 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 Cheetah disc drive. Note.
22 Cheetah 4LP Installation Guide, Rev. B 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 Cheetah drive in a system that has other SCSI devices installed, terminate only the end devices on the SCSI chain.
Cheetah 4LP Installation Guide, Rev. B 23 Internal SCSI cable Internal SCSI device Internal SCSI device Controller Terminate Internal SCSI cable Internal SCSI device Internal SCSI device Controller External SCSI cable External SCSI device External SCSI device Terminate 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.
24 Cheetah 4LP Installation Guide, Rev. B 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. Table 4. Cable characteristics for single-ended circuits I/O transfer rate Maximum number of devices on line Maximum cable length allowed 5 Mbytes/s 8 (reg. SCSI bus) 6 meters (19.7 ft.
Cheetah 4LP Installation Guide, Rev. B Figure 3a. 50-pin I/O connection to drive Figure 3b.
26 Cheetah 4LP Installation Guide, Rev. B “N” Model Drive 2 through X SCSI devices [1] Pin 1 (check your adapter for Pin 1 location) SCSI ID 1 [2] SCSI ID 0 SCSI ID 7 Host Adapter PCB [1] “X” means up to 6 or the maximum allowable number of devices on the SCSI bus. See system documentation. Figure 3c.
Cheetah 4LP Installation Guide, Rev. B “W” Model Drive 27 “WD” Model Drive 2 through X SCSI devices [1] Note: Do not mix “W” and “WD” model drives [2] on the daisy chain. Terminator Pin 1 (check your adapter for Pin 1 location) SCSI ID 1 SCSI ID 7 SCSI ID 0 Host Adapter PCB [1] “X” means up to 15 or the maximum allowable number of devices on the SCSI bus. See system documentation and Table 4. [2] External terminator. Used only on end “WD” drive. Figure 3d.
28 Cheetah 4LP Installation Guide, Rev. B 80-pin SCSI I/O Connector Pin 1 J2 J6 Note. This drive model plugs directly into a backplane connector and therefore uses no cables. Figure 3e.
Cheetah 4LP Installation Guide, Rev. B 29 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 (83329120) describes how to evaluate the air-flow design. The evaluation consists of ensuring that the case temperature of certain critical components remains within acceptable limits during drive operation.
30 Cheetah 4LP Installation Guide, Rev. B Kühlung des Systems Die Gehäusekonstruktion muß eine ausreichende Kühlung des Laufwerkes gewährleisten. Die Umgebungstemperatur darf maximal 50°C betragen. Die Produkthandbuch Cheetah 4LP (Dokument 83329120) enthalten Anweisungen zur Beurteilung der Luftstromkonstruktion. Die Beurteilung muß sicherstellen, daß sich die Gehäuset 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.
Cheetah 4LP Installation Guide, Rev. B 31 . Above unit Note. Air flows in the direction shown (back to front) or in reverse direction (front to back) Under unit Above unit Note. Air flows in the direction shown or in reverse direction (side to side) Under unit Figure 4. Suggested air flow Abbildung 4.
32 Cheetah 4LP Installation Guide, Rev. B Mounting the drive and connecting cables Do not touch the connector pins or any components on the control board without observing static-discharge precautions. Always handle the drive by the frame only. The drive may be mounted in any orientation (horizontally, vertically, and any combination thereof); however, you must ensure that the drive receives adequate air flow for cooling. 1. Mount the drive to the host system’s chassis using four 6-32 UNC screws.
Cheetah 4LP Installation Guide, Rev. B 33 1. 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. Die Schrauben müssen gleichmäßig, jedoch nicht zu fest, angezogen werden.
34 Cheetah 4LP Installation Guide, Rev. B 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. 4. Schließen Sie das SCSI-Kabel an den SCSI-Steckverbinder des Laufwerkes an. Das Kabel darf nicht gedehnt oder gedrückt werden und es darf den Luftstrom zur Kühlung des Systems nicht behindern.
Cheetah 4LP Installation Guide, Rev. B 35 Note. Signal ground on the power control board (PCB) and the head and disc assembly (HDA) are connected 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 PCB without electrically isolating shock mounts. Maximizing the conductive contact area between HDA ground and system ground may reduce radiated emissions.
36 Cheetah 4LP Installation Guide, Rev. B elektromagnetische Strahlung fällt in den Zuständigkeitsbereich des Systemdesigners. 5. Replace the host system’s cover. 5. Setzen Sie das Gehäuseoberteil des Host-Systems wieder auf.
Cheetah 4LP Installation Guide, Rev. B [1] 37 A [3] L C F D G E Notes: .050 in. (1.27mm) minimum clearance [1] Mounting holes three on each side, 6-32 UNC. Max screw length into side of drive 0.15 in. (3.81 mm). Screw tightening torque 6.0 in-lb (.675 NM) max with minimum thread engagement of 0.12 in. (3.05 mm). B [2] Mounting holes four on bottom, 6-32 UNC. Max screw length into bottom of drive 0.15 in. (3.81 mm). Screw tightening torque 6.0 in-lb (.675 NM) max with minimum thread engagement of 0.
38 Cheetah 4LP Installation Guide, Rev. B Formatting the drive Warning. Formatting a drive erases all user data. Be sure that you understand this principle before formatting any hard disc drive. It is not necessary to format a drive that previously has been used to store data, unless your intention is to erase all user data. Note. Seagate is not responsible for lost user data. 1. 2. 3. Turn on DC power.
Cheetah 4LP Installation Guide, Rev. B 39 N drives Setting the SCSI IDNjumpers drives sectionb Use the J6 connector to set the SCSI ID (see Figure 7). To change the SCSI ID, install jumpers on the appropriate pins as shown in the illustration. Jumper Plug (enlarged to show detail) J2 Pin 1 End J6 [4] J6 Pin 1 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 Figure 7.
40 Cheetah 4LP Installation Guide, Rev. B N drives Terminating the drive “N” model 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 jumper “TE” from pins 15 and 16 of connector J2 (see Figure 8). If you install the drive on the end of the SCSI bus, enable termination by installing a jumper on pins 15 and 16 of connector J2.
Cheetah 4LP Installation Guide, Rev. B 41 N drives Terminator power There are three possible terminator power (TP) configurations for “N” model 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. Pin 1 Pin 2 J2 RT T T D MW P E P P ESEP DS 2 1 Term. Power from Drive (default) Term. Power to SCSI Bus Term. Power from SCSI Bus (position A) Term.
42 Cheetah 4LP Installation Guide, Rev. B N drives Other applicable jumper options Several other jumper options are available as illustrated. Pin 1 J2 Pin 2 RT T T D MW P E P P E S EP DS 2 1 Reserved Delay Motor Start option (valid only if the Enable Motor Start jumper is not connected) Disable the Delay Motor Start option (default). Motor start delay equal to the SCSI ID multiplied by 12 seconds. For example, if the SCSI ID = 2, the drive starts in 24 seconds.
Cheetah 4LP Installation Guide, Rev. B 43 W/WD drives Setting the SCSI W/WD ID jumpers drives section Use the J6 jumper block to set the SCSI ID (Figure 11). To change the SCSI ID, install jumpers on the appropriate pins as shown in the illustration. Optional connections to switching circuits in host equipment are provided on J1 auxiliary to set the SCSI ID (see Figure 12).
44 Cheetah 4LP Installation Guide, Rev.
Cheetah 4LP Installation Guide, Rev. B 45 W/WD drives Terminating the drive “W” model 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 jumper “TE” from pins 15 and 16 of connector J2. If you install the drive on the end of the SCSI bus, enable termination by installing a jumper on pins 15 and 16 of connector J2 (see Figure 13). Note.
46 Cheetah 4LP Installation Guide, Rev. B W/WD drives Terminator power There are three possible terminator power (TP) configurations for “W” model drives (see Figure 14). You will not normally need to change this option and can leave the drive configured as it was shipped from the factory. There are two possible terminator power (TP) configurations for “WD” model drives (see Figure 14). J2 RT T T D MW P E P P ESEP DS 2 1 “W” Models Pin 1 Pin 2 Term. Power from Drive (default) Term.
Cheetah 4LP Installation Guide, Rev. B 47 W/WD drives Other applicable jumper options Other option jumpers are available as illustrated below. Pin 1 J2 Pin 2 RT T T D MW P E P P E S EP DS 2 1 Reserved Delay Motor Start option (valid only if the Enable Motor Start jumper is not connected) Disable the Delay Motor Start option (default). Motor start delay equal to the SCSI ID multiplied by 12 seconds. For example, if the SCSI ID = 2, the drive starts in 24 seconds.
48 Cheetah 4LP Installation Guide, Rev. B WC/DC drives Setting the SCSIWC/DC ID jumpers drives section The SCSI ID for “WC” and “DC” model drives is normally set over the SCSI bus by the host system using connector contacts 39 (ID0), 40 (ID2), 79 (ID1), and 80 (ID3). Terminating the drive “WC” and “DC” 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.
Cheetah 4LP Installation Guide, Rev. B 49 WC/DC drives Applicable jumper options Option jumpers are available as illustrated below. Pin 1 J2 Delay Motor Start option The host system has complete control over motor start functions. Do not install a jumper on these pins. R RR R E D MW P E E E S S EP DSS S Enable Motor Start option The host system has complete control over motor start functions. Do not install a jumper on these pins.
50 Cheetah 4LP Installation Guide, Rev. B All drives Drive Active All indicator drives (LED connections) The drive Active LED indicator connections are shown below. Jumper Plug (enlarged to show detail) J2 Pin 1 End J6 J6 Pin 1 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. CATH Note: On some LEDs the flat side of indicator is cathode. Figure 17.
Seagate Technology, Inc. 920 Disc Drive, Scotts Valley, CA 95066-4544, USA Publication Number: 83329110, Rev.
