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Barracuda 36 Installation Guide, Rev. B

15

General description

Barracuda 36 SCSI disc drives are high-speed, random-access
digital-data storage devices. 

The dr ive  is a component for installa tion 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 and shielded from emis-
si on s.  Th e 

Bar racuda 36 Product Manual

 ( pa r t  nu mb er

7 77 6 75 2 8 )  co n ta in s  g ui de lin e s  fo r  a  p ro p er ly  d e s ig ne d
enclosure.

*Model “LW” version with 68-pin SCSI I/O connector

Figure 1. Barracuda 36 family drive

*

Summary of Contents for Barracuda 36

Page 1: ...Barracuda 36 Disc Drive ST136475LW LC Installation Guide...

Page 2: ...s section 44 1997 1999 Seagate Technology Inc All rights reserved Publication Number 77767529 Rev B May 1999 Seagate Seagate Technology and the Seagate logo are regis tered trademarks of Seagate Techn...

Page 3: ...es used within the drive circuitry Although some devices such as metal oxide semi conductors are extremely sensitive all semiconductors as well as some resistors and capacitors may be damaged or degra...

Page 4: ...e carefully read and followed to minimize or eliminate the risk of personal injury The warnings point out conditions or practices that may endanger you or oth ers The cautions point out conditions or...

Page 5: ...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...

Page 6: ...eise machen auf Situationen oder Praktiken aufmerksam die Sie oder andere gef hrden k nnten Die Vorsichtshinweise machen auf Situationen oder Praktiken aufmerksam die Einheit besch digen k nnen so da...

Page 7: ...ratur gew hnlich am h chsten ist Befolgen Sie die oben unter Electrostatic Discharge Protec tion angegebenen Sicherheitsma nahmen Nehmen Sie keine Platinen aus dem Laufwerk Wenn eine Platine defekt is...

Page 8: ...laufwerk vorbehaltlich der endg ltigen Zulasssung im Endprodukt Designer von Untersystemen sind daf r verantwortlich die Voraussetzungen f r die Einhaltung sicherheits oder aufsichtsbeh rdlicher Vorsc...

Page 9: ...gnetic compliance Seagate uses an independent laboratory to confirm compliance to the directives standard s for CE Marking and C Tick Marking The drive was tested in a representative system for typica...

Page 10: ...netic 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 Australian C Tick If this model has the C Tick Marki...

Page 11: ...pport email email_disc_support shtml or DiscSupport Seagate com Tape http www seagate com support email email_tape_support shtml or TapeSupport Seagate com SeaBOARD is a computer bulletin board system...

Page 12: ...pe products and tape accessories through Seagate Express 24 hours daily by calling 1 800 531 0968 or by faxing your order to 1 972 481 4812 Technical Support If you need help installing your drive con...

Page 13: ...f purchase Authorized Service Centers If you live outside the US you can contact an Authorized Service Center for service or repair USA Canada Latin America Support Services Presales Support Disc 1 87...

Page 14: ...Support Services For European customer support dial the toll free number for your specific country for presales support technical support SeaFAX and warranty repair If your country is not listed here...

Page 15: ...iddle East Support Services For presales technical support warranty repair and FAX ser vices in Africa and the Middle East dial our European call center at 31 20 316 7222 from 8 30 a m to 5 00 p m Eur...

Page 16: ...14 Barracuda 36 Installation Guide Rev B SeaFAX Australia 61 2 9756 5170 Warranty Repair Japan 81 3 5462 2904 FAX 81 3 5462 2979 Asia Pacific and 65 485 3595 FAX 65 488 7503 Australia...

Page 17: ...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...

Page 18: ...erage write 8 4 msec Disk rotation RPM 7 200 r min Average latency 4 17 msec Internal transfer rate variable with zone 137 240 Mbits sec Maximum synchronous SCSI transfer rate LW LC 80 Mbytes sec 1 Ca...

Page 19: ...n completed and that the drive is able to accept selection by the host initiator 3 See the 12V current profile in the Barracuda 36 Product Manual publication number 77767528 4 This condition occurs wh...

Page 20: ...ply voltage is not less than 4 of the maximum operating current shown 2 Use separate ground returns for 5V and 12V supplies 3 Where power is provided to multiple drives from a common supply carefully...

Page 21: ...articular model Drive models Page ST136475LW 39 ST136475LC 44 General information The following general information topics are discussed SCSI ID jumpers Drive termination Terminator power Interface dr...

Page 22: ...details about its requirements for proper SCSI device installation Note This drive is a SCAM SCSI Configured Auto Magically compliant drive If the system into which you are installing this drive requi...

Page 23: ...he top example in Figure 2 shows an internal hard disc at one end of the SCSI bus with the SCSI controller at the other end both are terminated The bottom example shows two additional SCSI devices con...

Page 24: ...I O circuits Multi mode circuits operate either in single ended mode or low volt age differential mode No high voltage differential devices should be connected in the I O daisy chain with LW or LC mo...

Page 25: ...r than the standard non wide 8 bit SCSI data bus how ever you can use these wide drives on a standard non wide 8 bit data bus However the unused lines must be terminated the same as the used lines Fig...

Page 26: ...1142D docu ment It is recommended that the devices be uniformly spaced between terminators with the end devices located as close as possi ble to the terminators 3 Values specified by data rate shall...

Page 27: ...within a stub length of the termination 1 meter 3 Values specified by data rate shall apply even if a slower data rate is negotiated 4 Loads spaced at least eight inches 20 3 cm apart cables Refer to...

Page 28: ...26 Barracuda 36 Installation Guide Rev B Figure 3a Sixty eight pin connection to drive...

Page 29: ...T10 1142D including host adapter initiator The cable length restriction limits the total number of devices allowed 5 SCSI ID7 has highest arbitration priority For LW models priority is ID7 to ID0 then...

Page 30: ...8 Barracuda 36 Installation Guide Rev B Note This drive model plugs directly into a backplane connec tor and therefore uses no cables Figure 3c Drive model LC with single 80 pin I O and power connecto...

Page 31: ...ts remains within acceptable limits during drive operation We recommend orienting the drive or directing the air flow in a way that creates the least amount of air flow resistance while providing air...

Page 32: ...entieren oder den Luft strom so zu lenken da der geringste Luftstromwiderstand erzeugt wird und gleichzeitig ein Luftstrom ber den Platinen und um die Kopf und Festplatteneinheit HDA gegeben ist W hle...

Page 33: ...air flow Abbildung 4 Empfohlener Luftstromverlauf Note Air flows in the direction shown front to back or in reverse direction back to front Note Air flows in the direction shown or in reverse directi...

Page 34: ...drive The maximum length that the screws should extend into the chassis mounting holes is 0 15 inch 3 81 mm measured from the outer surface of the chassis Tighten the screws down evenly Do not over t...

Page 35: ...l die Schraube nicht in das Gewindeloch forcieren sondern die Schraube herausnehmen und erneut in das Gewindeloch einf hren 2 Verify that all connections between the drive and the host system are corr...

Page 36: ...d ber einen 4 poligen neben dem SCSI Anschlu befestigten Steckverbinder mit Gleichstrom ver sorgt Der Ausgang eines Netzteils mu SELV safety extra low voltage nach IEC 950 entsprechen Abbildung 5 zeig...

Page 37: ...drive in the host system This may increase radiated emissions and is the system designer s responsibility Hinweis Die Signalerde auf der bedruckte computerplatine mon tage PCBA und der Kopf und Festpl...

Page 38: ...da 36 Installation Guide Rev B elektromagnetische Strahlung f llt in den Zust ndigkeits bereich des Systemdesigners 5 Replace the host system s cover 5 Setzen Sie das Geh useoberteil des Host Systems...

Page 39: ...th 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 Mounting holes four on bottom 6 32 UNC Max screw length into bottom...

Page 40: ...Format the disc drive Barracuda 36 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 se...

Page 41: ...s 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 8 Terminating the drive L...

Page 42: ...model LW drives SCSI ID 0 default Jumper Plug enlarged to show detail J6 Drive Front Pin 1 Reserved A2A1A0 1 A L E D R E S 3 SCSI ID 1 SCSI ID 2 SCSI ID 3 SCSI ID 4 SCSI ID 5 SCSI ID 6 SCSI ID 7 SCSI...

Page 43: ...1 A2 A3 11 9 7 5 3 1 12 10 8 6 4 2 Host Alternate Usage Plug Pins 1 3 5 and 7 are optional connections to switching circuits in host equipment to establish drive ID Remote Switches For ID selection us...

Page 44: ...For example if the SCSI ID 2 the drive starts in 24 seconds Delay Motor Start option valid only if the Enable Motor Start jumper is not connected Enable motor start The drive waits for the Start Unit...

Page 45: ...or reference only Figure 10 Additional jumper option for LW drives A jumper here forces single ended I O operation 2 No jumper allows host to select either single ended or LVD operation S E D S M E W...

Page 46: ...er the SCSI bus by the host system using connector contacts 39 ID0 40 ID2 79 ID1 and 80 ID3 Users need not install jumpers to select SCSI ID Terminating the drive LC model drives do not have internal...

Page 47: ...tect Off enables writing Write protect On disables writing Write Protect option The host system has complete control over motor start functions Do not install a jumper on these pins Delay Motor Start...

Page 48: ...the SE jumper is not on the SCSI I O can operate in either single ended or low voltage differential LVD mode depending on which mode the host device has selected using the DIFFSNS I O line The SE jump...

Page 49: ...own here for reference only Figure 12 Additional jumper option for LC drives S E D S M E W P P D R E S R E S R E S Pin 1 J2 J2 Jumper Plug enlarged to show detail J2 Drive Front J6 A jumper here force...

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Page 52: ...Seagate Technology Inc 920 Disc Drive Scotts Valley CA 95066 4544 USA Publication Number 77767529 Rev B Printed in USA...

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