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Cheetah 18 Installation Guide, Rev. A

LC drives

WC/DC drives section

Drive Active indicator

The drive Active LED indicator connections are shown below.

Figure 18. Drive Active LED indicator connections

Jumper Plug

(enlarged to
show detail)

Drive

Front

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.

Pin 1

Note: On some LEDs the flat
side of indicator is cathode.

CATH

Summary of Contents for Cheetah 18

Page 1: ...Cheetah 18 Disc Drive ST118202LW LC Installation Guide...

Page 2: ...es section 45 1997 1998 Seagate Technology Inc All rights reserved Publication Number 83329250 Rev A March 1998 Seagate Seagate Technology and the Seagate logo are regis tered trademarks of Seagate Te...

Page 3: ...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 degraded...

Page 4: ...nit contain warnings and cautions that must be 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...

Page 5: ...forming depot repair this will damage components and void the warranty 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 VD...

Page 6: ...Diese Hinweise sind sorgf ltig durchzulesen und zu beachten um das Risiko von Verletzungen auf ein Mindestma zu beschr nken oder ganz zu vermeiden Die Warnhinweise machen auf Situationen oder Praktik...

Page 7: ...r Geh use montiert ist sorgen Sie daf r da die Temperatur im Inneren des Gestells oder Geh uses die f r das Laufwerk vorgege benen Grenzwerte nicht bersteigt Wenn Einheiten vertikal bereinander betest...

Page 8: ...genw rtig geltenden Standards zu gew hrleisten Zu den typischen Anwendungen dieser Festplattenwerke z hlen Systemeinbau durch den Kunden und die Konstruktion von Untersystemen Sicherheitsbe h rden gew...

Page 9: ...em does not adversely affect the performance of the drive See DC power requirements on page 18 Electromagnetic compliance Seagate uses an independent laboratory to confirm compliance to the directives...

Page 10: ...uropean 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 Australi...

Page 11: ...410 6 00 A M to 5 00 P M pacific time M F e mail Tape_Sales_Support Seagate com Note You can purchase select tape products and tape acces sories through Seagate Express 24 hours daily by calling 1 800...

Page 12: ...s over the Internet from Seagate s World Wide Web home page http www seagate com or Seagate s ftp server ftp ftp seagate com You can also send E mail with your questions to DiscSupport Seagate com or...

Page 13: ...to technical support spe cialists 24 hours daily Responses are sent during business hours Location Phone number Australia 61 2 9756 2359 France 33 1 48 25 35 95 Germany 49 89 140 9331 Taiwan 886 2 27...

Page 14: ...ore 65 488 7528 Taiwan 886 2 2715 2923 UK 44 1628 890660 USA Disc 405 936 1685 Tape 405 936 1683 Location Phone number Australia 61 2 9725 3366 9 00 A M to 5 00 P M eastern time M F France 33 1 41 86...

Page 15: ...ion Other customers should contact their place of purchase Seagate offers comprehensive customer support for all Seagate drives These services are available worldwide UK 44 1628 894083 10 00 A M to 1...

Page 16: ...A Informatica 55 21 516 6649 55 21 516 5280 Canada Memofix Adtech 905 660 4936 905 812 8099 1 800 624 9857 905 660 8738 905 812 7807 Mexico Abicom Seamax SA DE CV 525 546 4888 525 546 4888 Southern Eu...

Page 17: ...n about LVD technology 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 di...

Page 18: ...16 Cheetah 18 Installation Guide Rev A Figure 1 Cheetah 18 family drive ST118202LW shown...

Page 19: ...Disc rotation RPM Average latency msec 10 025 2 99 Synchronous data transfer rate Maximum instantaneous Mbytes sec 40 SE mode 80 LVD mode Asynchronous data transfer rate Maximum instantaneous 2 bytes...

Page 20: ...LVD mode DC power requirements 5 1 5 V 12 V 5 V 12 V Maximum start current Maximum operating current Average idle current 0 89A 0 88A 0 72A 2 5A 1 22A 0 98A 0 90A 0 95A 0 74A 2 5A 1 22A 0 98A 1 For m...

Page 21: ...ls Page ST118202LW 39 ST118202LC 45 General information The following general information topics are discussed Single ended and low voltage differential modes SCSI ID jumpers Drive termination Termina...

Page 22: ...es Note To operate at the Ultra2 SCSI rates in LVD mode all devices on the same bus must be running in LVD mode If you add any single ended device to a bus that is operat ing in LVD mode all devices d...

Page 23: ...omatically assigns your new drive the ID it wants it to have The system may or may not use the existing drive ID jumper settings Setting the drive ID doesn t hurt anything but is not necessary in a SC...

Page 24: ...bus with the SCSI controller at the other end both are terminated The bottom example shows two additional SCSI devices connected externally this means the SCSI con troller is no longer on the end of...

Page 25: ...I O circuits and data path widths These drives can be used in single ended or low voltage differ ential interface systems however do not attempt to mix these drives on the same daisy chain with high...

Page 26: ...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 transfer rates A maximum of 16 devices can b...

Page 27: ...Cheetah 18 Installation Guide Rev A 25 Figure 3 68 pin I O connection to drive LW model Figure 4 80 pin I O connection to drive LC model...

Page 28: ...minator Used only on end LW drive Use only SPI 2 compliant active LVD terminators on SCSI Ultra2 buses Figure 5 Multiple drive connection to host adapter Terminated Host Adapter PCB Pin 1 check your a...

Page 29: ...on Guide Rev A 27 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 J6 80 pin SCSI I...

Page 30: ...enting the drive or directing the air flow in a way that creates the least amount of air flow resistance while providing air flow above the circuit boards and around the head and disc assembly HDA Als...

Page 31: ...tieren 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 hlen...

Page 32: ...air flow Abbildung 7 Empfohlener Luftstromverlauf 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 i...

Page 33: ...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 ti...

Page 34: ...der ausgerichtet In diesem Fall 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 driv...

Page 35: ...lung des Systems nicht behindern Das Laufwerk wird ber einen 4 poligen neben dem SCSI Anschlu befestigten Steckverbinder mit Gleichstrom ver sorgt Der Ausgang eines Netzteils mu SELV safety extra low...

Page 36: ...g the drive in the host system This may increase radiated emissions and is the system designer s responsibility Hinweis Die Signalerde auf der Stromregelungskarte PCBA und der Kopf und Festplatteneinh...

Page 37: ...8 Installation Guide Rev A 35 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 w...

Page 38: ...imum full thread engagement of 0 12 in 3 05 mm Notes 1 J H L B A S K 1 R F 1 D E C G P M X X U Z T Z Z Inches A B C D E F G H J K L M P R S T U 42 01 147 00 101 60 92 25 3 18 44 45 41 28 28 50 101 60...

Page 39: ...ing torque is 6 0 in lb 3 32 nm with minimum full thread engagement of 0 12 in 3 05 mm Notes 1 Inches A B C D E F G H J K L M N P R S T U 42 01 147 00 101 60 92 25 3 18 44 45 41 28 28 50 101 60 6 35 4...

Page 40: ...ith a variety of operating systems Please refer to your system or SCSI controller manual for information about formatting and setting up the drive Some quick desk top system notes are provided below Q...

Page 41: ...11 To change the SCSI ID install jumpers as shown in the illustration Figure 11 Setting the SCSI ID on ST118202LW drives SCSI ID 0 Jumper Plug enlarged to show detail J6 Drive Front Pin 1 SCSI ID 1 S...

Page 42: ...ust provide external termination to these drives when termination is required This is normally done by adding an in line terminator on the cable Note Use active ANSI SCSI 2 Alternative 2 single ended...

Page 43: ...The default setting is no jumper meaning that some other source other than this drive is suppling termination power to the SCSI bus Figure 12 Setting terminator power jumpers Term Power to SCSI Bus Ho...

Page 44: ...fault 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 Delay Motor Start option valid only if the Enable Motor Start jumper i...

Page 45: ...8 SCSI ID 9 SCSI ID 10 SCSI ID 11 SCSI ID 12 SCSI ID 13 SCSI ID 14 SCSI ID 15 J1 DC Power 68 Pin SCSI I O Connector J1 Pin 1 Pin 1 J5 J1A 2 4 J1A Pin 1 Pin 12 1P 2P 3P 4P SCSI Address A0 SCSI Address...

Page 46: ...gure 15 Drive Active LED indicator connections Jumper Plug enlarged to show detail Drive Front J6 Reserved Activity LED Reserved The shaded pins are shipped with a cover installed Do not install jumpe...

Page 47: ...the J6 jumper block to set the SCSI ID see Figure 16 Figure 16 Setting the SCSI ID on ST118202LC drives SCSI ID 0 default Note 1 Do not remove cover from pins 13 through 20 darkened area Jumper Plug e...

Page 48: ...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 Note Use active ANSI SCSI 2 Alternative 2 sing...

Page 49: ...or 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 Delay Motor Start option valid only if the Enable Mo...

Page 50: ...n below Figure 18 Drive Active LED indicator connections Jumper Plug enlarged to show detail Drive Front J6 Reserved Activity LED Reserved The shaded pins are shipped with a cover installed Do not ins...

Page 51: ......

Page 52: ...Seagate Technology Inc 920 Disc Drive Scotts Valley CA 95066 4544 USA Publication Number 83329250 Rev A Printed in USA...

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