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Cheetah 18LP Product Manual, Rev. F

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Typical ST318203 and ST318233 drive +12 V current profile

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Typical ST39103 and ST39133 drive +12 V current profile

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+12 Volt Current during spindle start – Typical Amperes

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+12 Volt Current during spindle start – Typical Amperes

Содержание Cheetah 18LP

Страница 1: ... Cheetah 18LP Family ST318203LW LWV LC LCV ST318233LWV LCV ST39103LW LWV LC LCV ST39133LWV LCV Product Manual Volume 1 ...

Страница 2: ......

Страница 3: ... Cheetah 18LP Family ST318203LW LWV LC LCV ST318233LWV LCV ST39103LW LWV LC LCV ST39133LWV LCV Product Manual Volume 1 ...

Страница 4: ...AX SeaFONE SeaBOARD and SeaTDD are either trademarks or registered trade marks of Seagate Technology Inc or one of its subsidiaries All other trademarks or registered trade marks are the property of their respective owners Seagate reserves the right to change without notice product offerings or specifications No part of this publication may be reproduced in any form without written permission of S...

Страница 5: ... els order SCSI Interface Manual part number 75789509 Revision Date Writer Engineer Sheets Affected Rev A 12 01 98 L Newman D Rusch 9 10 24 25 43 Rev B 01 12 99 L Newman D Rusch 7 33 45 and 47 Rev C 02 19 99 L Newman D Rusch Adds ST39103LW LC data and rewords references to the SCSI I O Manual Pages 5 8 9 14 19 21 22 23 24 25 31 32 46 47 50 51 52 53 54 55 63 and 67 Rev D 05 18 99 L Newman D Rusch 1...

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Страница 7: ...t command execution time minutes 9 4 2 3 Generalized performance characteristics 9 4 3 Start stop time 10 4 4 Prefetch multi segmented cache control 10 4 5 Cache operation 10 4 5 1 Caching write data 11 4 5 2 Prefetch operation 12 5 0 Reliability specifications 13 5 1 Error rates 13 5 1 1 Environmental interference 13 5 1 2 Read errors 13 5 1 3 Write errors 13 5 1 4 Seek errors 13 5 2 Reliability ...

Страница 8: ...orted 45 9 3 SCSI interface commands supported 46 9 3 1 Inquiry Vital Product data 49 9 3 2 Mode Sense data 50 9 4 SCSI bus conditions and miscellaneous features supported 53 9 5 Synchronous data transfer 54 9 5 1 Synchronous data transfer periods supported 54 9 5 2 REQ ACK offset 54 9 6 Physical interface 55 9 6 1 DC cable and connector 55 9 6 2 SCSI interface physical description 57 9 6 3 SCSI i...

Страница 9: ...ut output operations per second LVD 25 Figure 13 ST39133 DC current and power vs input output operations per second SE 26 Figure 14 ST39133 DC current and power vs input output operations per second LVD 26 Figure 15 Locations of PCBA components listed in Tables 3 and 4 28 Figure 16 Recommended mounting 30 Figure 17 LW and LWV mounting configuration dimensions 32 Figure 18 LC and LCV mounting confi...

Страница 10: ......

Страница 11: ...scribes general SCSI interface character istics of these Seagate drives ST318233 and ST39133 drives support the small computer system interface SCSI as described in the ANSI Ultra160 interface specifications to the extent described in this manual The SCSI Interface Product Manual part number 75789509 describes general SCSI interface characteristics of these Seagate drives From this point on in thi...

Страница 12: ...2 Cheetah 18LP Product Manual Rev F ...

Страница 13: ...of the FCC Rules and Regula tions of the Canadian Department of Communications when properly packaged However it is the user s responsibility to assure that the drive meets the appropriate EMI requirements in their system Shielded I O cables may be required if the enclosure does not provide adequate shielding If the I O cables are external to the enclosure shielded cables should be used with the s...

Страница 14: ...SI Interface Product Manual Ultra160 and later Seagate P N 75789509 ANSI small computer system interface SCSI document numbers X3 131 1994 SCSI 2 X3 253 1995 SCSI 3 Parallel Interface T10 1142D Rev 14 SPI 2 SCSI 3 Parallel Interface version 2 SFF 8046 Specification for 80 pin connector for SCSI disk drives Package Test Specification Seagate P N 30190 001 under 100 lb Package Test Specification Sea...

Страница 15: ...e ANSI SCSI interface specifications to the extent described in this manual which defines the product perfor mance characteristics of these drives and the SCSI Interface Product Manual part number 75789509 which describes the general interface characteristics of these drives The drive s interface supports multiple initiators disconnect reconnect self configuring host software and automatic feature...

Страница 16: ...r is applied to the drive and the head load process begins Cheetah 18LP drives decode track 0 location data from the servo data embedded on each surface to eliminate mechanical transducer adjustments and related reliability concerns A high performance actuator assembly with a low inertia balanced patented straight arm design provides excellent performance with minimal power dissipation Figure 2 Ch...

Страница 17: ...tical horizontal or top down mounting Dynamic spindle brake 1 024 kbyte data buffer 4 096 kbytes on LWV LCV models Hot plug compatibility Section 9 6 4 2 lists proper host connector needed for LC and LCV model drives SCAM SCSI Configured Automatically plug n play level 2 compliant factory set to level 1 3 2 Media characteristics The media used on the drive has a diameter of approximately 3 3 inche...

Страница 18: ...lue in the block descriptor number of blocks field A value greater than the maximum number of LBAs is rounded down to the maximum capacity 3 7 Factory installed accessories OEM Standard drives are shipped with the Cheetah 18LP Installation Guide part number 83329410 unless otherwise specified The factory also ships with the drive a small bag of jumper plugs used for the J2 J5 and J6 option select ...

Страница 19: ...e 5 0 to 80 Mbytes sec ST318203 ST39103 ST318233 ST39133 Drive capacity 18 2 9 10 18 2 9 10 GByte formatted rounded Read write heads 12 6 12 6 Bytes track 153 284 229 045 153 284 229 045 153 284 229 045 153 284 229 045 Bytes average rounded Bytes surface 1 913 1 913 1 913 1 913 Mbytes unformatted rounded Tracks surface total 9 801 9 801 9 801 9 801 Tracks user accessible Tracks inch 12 580 12 580 ...

Страница 20: ...s listed in the SCSI Interface Product Manual less than 3 seconds after DC power has been applied After the Motor Start Command has been received the drive becomes ready for normal operations within 30 seconds typically excluding an error recovery procedure The Motor Start Command can also be used to command the drive to stop the spindle see the appropriate SCSI Interface Product Manual There is n...

Страница 21: ...h is an integer number of disc medium sectors The wrap around capability of the individual segments greatly enhances the buffer s overall performance as a cache storage allowing a wide range of user selectable config urations which includes their use in the prefetch operation if enabled even when cache operation is disabled see Section 4 5 2 The number of segments may be selected using the Mode Se...

Страница 22: ...d Ahead DRA bit DRA bit 0 enables prefetch Since data that is prefetched replaces data already in some buffer segment s the host can limit the amount of prefetch data to optimize system perfor mance The max prefetch field bytes 8 and 9 limits the amount of prefetch The drive does not use the Prefetch Ceiling field bytes 10 and 11 During a prefetch operation the drive crosses a cylinder boundary to...

Страница 23: ... 1 2 Read errors Before determination or measurement of read error rates The data that is to be used for measurement of read error rates must be verified as being written correctly on the media All media defect induced errors must be excluded from error rate calculations 5 1 3 Write errors Write errors can occur as a result of media defects environmental interference or equipment malfunction There...

Страница 24: ...ation hours means power up hours per disc drive times the total number of disc drives in service Each disc drive shall have accumulated at least nine months of operation Data shall be calculated on a rolling average base for a minimum period of six months MTBF is based on the following assumptions 8 760 power on hours per year 250 average on off cycles per year Operations at nominal voltages Syste...

Страница 25: ...ch that a device being inserted makes power and ground connections prior to the connection of any device signal contact to the bus A device being removed shall maintain power and ground connections after the dis connection of any device signal contact from the bus see SFF 8046 SCA 2 specification It is the responsibility of the systems integrator to assure that no hazards from temperature energy v...

Страница 26: ...te data will be saved to the disc for the purpose of recreating the events that caused a predic tive failure The drive will measure and save parameters once every two hours subject to an idle period on the SCSI bus The process of measuring off line attribute data and saving data to the disc is uninterruptable and the maximum delay is summarized below Maximum processing delay On line only delay Ful...

Страница 27: ... specifications will be repaired or replaced at Seagate s option and at no charge to customer if returned by customer at cus tomer s expense to Seagate s designated facility in accordance with Seagate s warranty procedure Seagate will pay for transporting the repair or replacement item to customer For more detailed warranty information refer to the Standard terms and conditions of Purchase for Sea...

Страница 28: ...18 Cheetah 18LP Product Manual Rev F ...

Страница 29: ... command 5 See Section 6 2 1 Conducted Noise Immunity Specified voltage tolerance is inclusive of ripple noise and transient response Notes ST318203 ST39103 SE mode LVD mode SE mode LVD mode Voltage 5 V 12 V 5 V 12 V 5 V 12 V 5 V 12 V Regulation 5 5 5 2 5 5 2 5 5 2 5 5 2 Average idle current DCX 1 7 0 69 0 6 0 71 0 6 0 71 0 34 0 72 0 34 Maximum starting current peak DC DC peak AC AC 3 3 0 79 1 0 1...

Страница 30: ...a band from DC to 10 MHz Maximum allowed noise values given below are peak to peak measurements and apply at the drive power con nector 6 2 2 Power sequencing The drive does not require power sequencing The drive protects against inadvertent writing during power up and down Daisy chain operation requires that power be maintained on the SCSI bus terminator to ensure proper termination of the periph...

Страница 31: ...33 drive 12 V current profile 0 0 2 4 6 8 10 12 14 16 0 0 0 5 1 0 1 5 2 0 2 5 A Seconds T0 T1 T3 T4 AC Envelope T2 12 Volt Current during spindle start Typical Amperes DC average of waveform 0 0 2 4 6 8 10 12 14 16 0 0 5 1 0 1 5 2 0 2 5 A Seconds T0 T1 T3 T4 Peak AC Envelope T2 Peak DC 12 Volt Current during spindle start Typical Amperes ...

Страница 32: ...urrent profile 5V Current amps 0 0 4 8 12 16 20 24 28 32 0 0 5 1 0 A Seconds T2 T4 T1 T0 T3 T5 AC Component Nominal average DC curve 5 Volt Current during spindle start Typical Amperes 5V Current amps 0 0 2 4 6 8 10 12 14 16 0 0 5 1 0 A Seconds T2 T4 T1 T0 T3 T5 Nominal average DC curve 5 Volt Current during spindle start Typical Amperes AC Component ...

Страница 33: ...ng I O rate curves Locate the typical I O rate for a drive in your system on the horizontal axis and read the corresponding 5 volt current 12 volt current and total watts on the vertical axis To calculate BTUs per hour multiply watts by 3 4123 Figure 7 ST318203 DC current and power vs input output operations per second SE Figure 8 ST318203 DC current and power vs input output operations per second...

Страница 34: ...ocate the typical I O rate for a drive in your system on the horizontal axis and read the cor responding 5 volt current 12 volt current and total watts on the vertical axis To calculate BTUs per hour multiply watts by 3 4123 Figure 9 ST39103 DC current and power vs input output operations per second SE Figure 10 ST39103 DC current and power vs input output operations per second LVD 0 200 0 50 100 ...

Страница 35: ...es 7 and 8 Locate the typical I O rate for a drive in your system on the horizontal axis and read the cor responding 5 volt current 12 volt current and total watts on the vertical axis To calculate BTUs per hour multiply watts by 3 4123 Figure 11 ST318233 DC current and power vs input output operations per second SE Figure 12 ST318233 DC current and power vs input output operations per second LVD ...

Страница 36: ...7 and 8 Locate the typical I O rate for a drive in your system on the horizontal axis and read the cor responding 5 volt current 12 volt current and total watts on the vertical axis To calculate BTUs per hour multiply watts by 3 4123 Figure 13 ST39133 DC current and power vs input output operations per second SE Figure 14 ST39133 DC current and power vs input output operations per second LVD 0 4 0...

Страница 37: ...chieve these temperatures see Section 8 3 1 Continual or sustained operation at case temperatures above these values may degrade MTBF To confirm that the required cooling for the electronics and HDA is provided place the drive in its final mechanical configuration perform random write read operations After the temperatures stabilize measure the case temperature of the components listed in Table 3 ...

Страница 38: ...tive humidity The values below assume that no condensation on the drive occurs a Operating 5 to 95 non condensing relative humidity with a maximum gradient of 10 per hour b Non operating 5 to 95 non condensing relative humidity 6 4 3 Effective altitude sea level a Operating 1 000 to 10 000 feet 305 to 3 048 meters b Non operating 1 000 to 40 000 feet 305 to 12 210 meters Model LW PCBA Model LC PCB...

Страница 39: ...o all conditions of handling and transportation This includes both isolated drives and integrated drives The drive subjected to nonrepetitive shock not exceeding 75 Gs at a maximum duration of 11 msec half sinewave shall not exhibit device damage or performance degradation Shock may be applied in the X Y or Z axis The ST318203LW LWV LC LCV and ST318233LWV LCV drive subjected to nonrepetitive shock...

Страница 40: ...30 Cheetah 18LP Product Manual Rev F Figure 16 Recommended mounting Z Y X Z Y X ...

Страница 41: ...ecovery routines are available c Non operating The limits of non operating vibration shall apply to all conditions of handling and transportation This includes both isolated drives and integrated drives The drive shall not incur physical damage or degraded performance as a result of continuous vibration not exceeding 5 22 Hz 0 080 inches 2 03 mm displacement 22 400 Hz 2 00 G Vibration may be appli...

Страница 42: ... ST39133 0 589 kilograms 0 544 kilograms J H L B A S K 1 M C R F 1 D E P G 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 3 05 mm Notes 1 Inches A B C D E F G H J K L M P R S T U 26 10 147 00 101 60 92 25 3 18 44 45 41...

Страница 43: ... 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 H J K L M N P R S T U 26 10 147 00 101 60 92 25 3 18 44 45 28 50 101 60 6 35 41 60 4 60 1 20 41 28 66 50 7 00 0 38 0 38 1 028 5 787 4 000 3 750 125 1 750 1 122 4 000 250 1 638 181 040 1 625 2 618 276 015 015 max max 010 010 010 010 020 010 010 010 020 max 020 010 040 max max max max 25 25 25 25 ...

Страница 44: ...34 Cheetah 18LP Product Manual Rev F ...

Страница 45: ...e required in video applications For addi tional information on this refer to the Error Recovery Page table in the appropriate SCSI Interface Product Manual which describes the Mode Select Mode Sense Error Recovery parameters The error recovery scheme supported by the drive provides a means to control the total error recovery time for the entire command in addition to controlling the recovery leve...

Страница 46: ...t Note A recovery time limit of 0 will use the drive s default value of FF FF Minimum recovery time limit is achieved by setting the Recovery Time Limit field to 00 01 7 3 SCSI systems errors Information on the reporting of operational errors or faults across the interface is given in the appropriate SCSI Interface Product Manual Message Protocol System is described in the SCSI Interface Product M...

Страница 47: ...rovide external terminators Note For additional information about terminator requirements refer to Sections 9 8 and 9 9 Set all appropriate option jumpers for desired operation prior to power on If jumpers are changed after power has been applied recycle the drive power to make the new settings effective Installation instructions are provided by host system documentation or with any additionally p...

Страница 48: ...cover 11 9 7 5 3 1 Drive Activity LED 4 6 Dashed area is optional host circuitry external to the drive connected to host supplied optional usage plug Do not connect anything to pins 13 20 5V Host Alternate Usage Plug Reserved Pins 6 8 4 2 4 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 ID 8 SCSI ID 9 SCSI ID 10 SCSI ID 11 SCSI ID 12 SCSI ID 13 SCSI ID 1...

Страница 49: ... 5V Ground 4 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 use jumpers as shown or connect a cable for remote switching as shown below Dashed area is optional host circuitry external to the drive connected to host supplied optional usage plug 4 Reserved Pins 2 4 6 and 8 are normally...

Страница 50: ... condition The PCBA on LC and LCV models does not have connector J5 The J5 connector signals conform to SFF 8009 Revision 2 0 Unitized Connector for Cabled Drives signal assignments for auxiliary connec tors 2 These signals are also on 80 pin J1 I O connector See Tables 18 and 19 3 Voltage supplied by the drive Delay Motor Start Enable Remote Motor Start Write Protect Parity Disable Term Power to ...

Страница 51: ...er 24 second delay etc On On Drive spindle starts when Start Unit command received from host Delayed start feature is overridden and does not apply when ME jumper is installed WP On Entire drive is write protected Off Drive is not write protected Default is WP jumper not installed PD On Parity checking and parity error reporting by the drive is disabled Off Drive checks for parity and reports resu...

Страница 52: ...g the tempera ture measurement guidelines described in Section 6 4 1 Forced air flow may be required to keep temperatures at or below the specified case temperatures of Table 3 in which case the drive should be oriented or air flow directed so that the least amount of air flow resistance is created while providing air flow to the electronics and HDA Also the shortest possible path between the air ...

Страница 53: ...to 5 25 inch adapter frame verify with Seagate Tech nology that the drive can meet the shock and vibration specifications given herein while mounted in such an adapter frame Adapter frames that are available may not have a mechanical structure capa ble of mounting the drive so that it can meet the shock and vibration specifications listed in this manual 8 5 Grounding Signal ground PCBA and HDA gro...

Страница 54: ...44 Cheetah 18LP Product Manual Rev F ...

Страница 55: ... SCSI 3 modes of the Cheetah 18LP family drives Notes 1 Extended messages see the appropriate SCSI Interface Product Manual 2 Supports all options except qas_req and iu_req Table 6 SCSI messages supported by Cheetah 18LP family drives Message name Message code Supported by SCSI 2 3 Abort 06h Y Abort tag 0Dh Y Bus device reset 0Ch Y Clear ACA 16h N Clear queue 0Eh Y Command complete 00h Y Continue ...

Страница 56: ... supported Y DSP bit supported Y IMMED bit supported Y VS vendor specific N Inquiry 12h Y Date code page C1h Y Firmware numbers page C0h Y Implemented operating def page 81h Y Jumper settings page C2h Y Supported Vital product data page 00h Y Unit serial number page 80h Y Lock unlock cache 36h N Log select 4Ch Y PCR bit Y DU bit N DS bit Y TSD bit Y ETC bit N TMC bit N LP bit N Log sense 4Dh Y App...

Страница 57: ...ed by Ultra160 3Ch Y Read capacity 25h Y Read defect data 10 37h Y Read defect data 12 B7h Y Read extended 28h Y DPO bit supported Y FUA bit supported Y Read long 3Eh Y Reassign blocks 07h Y Receive diagnostic results 1Ch Y Supported diagnostics pages 00h Y Translate page 40h Y Release 17h Y Release 10 57h Y Request sense 03h Y Actual retry count bytes Y Extended sense Y Field pointer bytes Y Rese...

Страница 58: ...anslate page 40h Y Set limits 33h N Start unit stop unit spindle ceases rotating 1Ch 1Bh Y Synchronize cache 35h Y Test unit ready 00h Y Verify 2Fh Y BYTCHK bit Y Write 0Ah Y Write and verify 2Eh Y DPO bit Y Write buffer modes 0 2 supported 3Bh Y Firmware download option modes 5 7 supported Ah and Bh also supported by Ultra160 3 Y Write extended 2Ah Y DPO bit Y FUA bit Y Write long 3Fh Y Write sam...

Страница 59: ...3 33 00 For LW models bytes 24 25 and 26 are 4C 57 20 For LWV models bytes 24 25 and 26 are 4C 57 56 For LC models bytes 24 25 and 26 are 4C 43 20 For LCV models bytes 24 25 and 26 are 4C 43 56 5 Copyright Year changes with actual year 9 3 1 Inquiry Vital Product data Instead of the standard Inquiry data shown in Table 8 the initiator can request several Vital Product Data pages by setting the Inq...

Страница 60: ...ates which of the current values and saved values can be changed by a Mode Select command A one allows a change to a corresponding bit a zero allows no change For example in Table 9 refer to Mode page 01 in the row entitled CHG These are hex numbers representing the changeable values for mode page 01 Note that bytes 04 05 06 and 07 are not changeable because those fields are all zeros If some chan...

Страница 61: ...Headers and Parameter Data Bytes 01 DEF 81 0A C0 0B E8 00 00 00 05 00 FF FF 01 CHG 81 0A FF FF 00 00 00 00 FF 00 FF FF 02 DEF 82 0E 80 80 00 0A 00 00 00 00 00 00 00 00 00 00 02 CHG 82 0E FF FF 00 00 00 00 00 00 00 00 87 00 00 00 03 DEF 83 16 02 A5 00 00 00 04 00 00 01 1 2F 02 00 00 01 00 2C 00 38 40 00 00 00 03 CHG 83 16 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 04 DEF 84 1...

Страница 62: ...87 00 00 00 03 DEF 83 16 0A EC 00 00 00 0D 00 00 01 1 30 02 00 00 01 00 2C 00 38 40 00 00 00 03 CHG 83 16 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 04 DEF 84 16 00 26 2C 06 00 00 00 00 00 00 00 00 00 00 00 00 00 00 27 20 00 00 04 CHG 84 16 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 07 DEF 87 0A 00 0B E8 00 00 00 00 00 FF FF 07 CHG 87 0A 0F FF 00 00 00...

Страница 63: ...tion N Auto Contingent Allegiance Condition Y Contingent Allegiance Condition Y Deferred Error Handling Y Disconnect Reconnect N High voltage differential HVD interface available Y Low voltage differential LVD interface available Y Parameter Rounding controlled by the Round bit in Mode Select page 0 Y Queue tagging up to 64 Queue tags supported Y Reporting actual retry count in Extended Sense byte...

Страница 64: ...789509 In the following tables M is the synchronous period value in the transfer rate negotiation message that represents the associated transfer period and transfer rate values Table 13 lists the synchronous data transfer periods supported by the drive in DT Data phase DT Data phase is only allowed when using the LVD interface Table 13 Synchronous DT Data transfer periods Table 14 lists the synch...

Страница 65: ...cal characteristics are given in sections following while the SCSI operational aspects of Seagate drive interfaces are given in the SCSI Interface Product Manual 9 6 1 DC cable and connector LW and LWV model drives receive DC power through a 4 pin connector see Figure 25 for pin assignment mounted at the rear of the main PCBA Recommended part numbers of the mating connector are listed below but eq...

Страница 66: ... SCSI I O connector Figure 24 LC and LCV model drive physical interface 80 pin J1 SCSI I O connector J5 Pin 1A 68 Pin SCSI I O Connector Pin 1P J1 DC Power J6 J1 Pin 1 J1 DC Power Pin 1P 2P 3P 4P Power 12V 12V ret 5V ret 5V J1 Pin 1 1P 2P 3P 4P J5 Pin 1A PCB J2 J6 80 pin SCSI I O Connector Pin 1 J2 ...

Страница 67: ...circuits that can be enabled by installation of a jumper plug TE on the device These ter mination circuits receive power from either a source internal to the device or from a line in the interface cable specifically powered for that purpose LC LCV LW and LWV model drives do not have onboard termination cir cuits Some type of external termination circuits must be provided for these drives by the en...

Страница 68: ...ls The 80 pin connector option is intended for use on drives that plug directly into backplane connector in the host equipment In such installations all backplane wiring segments are subject to the electromagnetic concepts presented in Standard X3T10 1142D section 6 For LC and LCV model drives installations with connectors on cables are not recommended 9 6 4 Mating connectors Part numbers for the ...

Страница 69: ...per power trans mission design concepts No possibility for the equipment user to attach an 80 pin cable connector should be allowed since the length of the DC power carrying conductors could not be controlled and therefore could become too long for safe power transmission to the drive Daisy chain 80 conductor cables should especially not be allowed since the power carrying conductors on the 80 con...

Страница 70: ...ncluding host adapter initiator The cable length restriction limits the total number of devices allowed 5 SCSI ID7 has highest arbitration priority then ID15 to ID8 ID 8 very lowest 6 Last drive on the daisy chain 7 Open end type 68 pin connector used If end device use external terminator and closed end type 68 pin connector Figure 25 SCSI daisy chain interface cabling for LW and LWV drives Straig...

Страница 71: ...315 8 00 3 650 92 71 840 005 21 34 315 010 8 00 001 002 dia 083 2 1 Trifurcated Pins 4 places 085 2 16 x 45 chamfer typ 20 5 08 typ 60 15 24 100 2 54 Pos 1 Pos 2 1 2 3 4 1 816 46 13 Position 1 Pos 68 Pos 35 1 650 41 91 980 24 89 1 368 37 74 767 19 48 050 1 27 218 5 54 Pos 1 022 050 020 047 0787 200 1 650 3937 600 346 3 650 005 270 155 ...

Страница 72: ...276 12 70 500 2 15 0 10 2 places 57 87 2 278 Y 0 15 M Y M 0 15 M Y M 0 0 15 000 006 62 15 2 447 0 15 005 Housing X X Contact 0 3 012 M Y M 1 27 05 Typ C L of Datum Y C L of Datum Y 0 50 020 Pin 1 Pin 40 Pin 41 Pin 80 Pin 1 Front View End View Top View Back View Insert mating I O connector Grounding Pins Grounding Pins ...

Страница 73: ...0 39 DBP1 GND 6 11 12 40 DB0 GND 7 13 14 41 DB1 GND 8 15 16 42 DB2 GND 9 17 18 43 DB3 GND 10 19 20 44 DB4 GND 11 21 22 45 DB5 GND 12 23 24 46 DB6 GND 13 25 26 47 DB7 GND 14 27 28 48 DBP GND 15 29 30 49 GND GND 16 31 32 50 GND TermPwr 17 33 34 51 TermPwr TermPwr 18 35 36 52 TermPwr Reserved 19 37 38 53 Reserved GND 20 39 40 54 GND GND 21 41 42 55 ATN GND 22 43 44 56 GND GND 23 45 46 57 BSY GND 24 4...

Страница 74: ... 12 40 DB0 DB1 7 13 14 41 DB1 DB2 8 15 16 42 DB2 DB3 9 17 18 43 DB3 DB4 10 19 20 44 DB4 DB5 11 21 22 45 DB5 DB6 12 23 24 46 DB6 DB7 13 25 26 47 DB7 DBP 14 27 28 48 DBP Ground 15 29 30 49 Ground DIFFSNS 8 16 31 32 50 Ground TermPwr 17 33 34 51 TermPwr TermPwr 18 35 36 52 TermPwr Reserved 19 37 38 53 Reserved Ground 20 39 40 54 Ground ATN 21 41 42 55 ATN Ground 22 43 44 56 Ground BSY 23 45 46 57 BSY...

Страница 75: ...NC 10 6 46 DIFFSNS 8 DB11 7 47 GND DB10 8 48 GND DB9 9 49 GND DB8 10 50 GND I O 11 51 GND REQ 12 52 GND C D 13 53 GND SEL 14 54 GND MSG 15 55 GND RST 16 56 GND ACK 17 57 GND BSY 18 58 GND ATN 19 59 GND DBP 20 60 GND DB7 21 61 GND DB6 22 62 GND DB5 23 63 GND DB4 24 64 GND DB3 25 65 GND DB2 26 66 GND DB1 27 67 GND DB0 28 68 GND DP1 29 69 GND DB15 30 70 GND DB14 31 71 GND DB13 32 72 GND DB12 33 73 GN...

Страница 76: ...6 46 DIFFSNS 8 DB11 7 47 DB11 DB10 8 48 DB10 DB9 9 49 DB9 DB8 10 50 DB8 I O 11 51 I O REQ 12 52 REQ C D 13 53 C D SEL 14 54 SEL MSG 15 55 MSG RST 16 56 RST ACK 17 57 ACK BSY 18 58 BSY ATN 19 59 ATN DBP 20 60 DBP0 DB7 21 61 DB7 DB6 22 62 DB6 DB5 23 63 DB5 DB4 24 64 DB4 DB3 25 65 DB3 DB2 26 66 DB2 DB1 27 67 DB1 DB0 28 68 DB0 DBP1 29 69 DP1 DB15 30 70 DB15 DB14 31 71 DB14 DB13 32 72 DB13 DB12 33 73 D...

Страница 77: ...al specifications See ANSI SPI 3 specification T10 1302D for ST318233 and ST39133 model electrical specifications 9 7 1 Multimode SE and LVD alternatives When the interface DIFFSNS line is between 0 35 V and 0 5 V the drive interface circuits operate single ended and up to and including 20 M transfers s Fast 20 or Ultra SCSI When DIFFSNS is between 0 7 V and 1 9 V the ST318203 and ST39103 drive in...

Страница 78: ... 030 V Vs 3 6 V signal negation logic 0 Steady state High level output voltage 3 6 V Vs 0 030 V signal assertion logic 1 Differential voltage 0 30 V minimum with common mode voltage ranges 0 700 V Vcm 1 800 V X3T10 1142D revision 13 p 152 These voltages shall be measured between the output terminal and the SCSI device s logic ground reference Input characteristics shall additionally conform to EIA...

Страница 79: ...ns cables of different impedances should not be used in the same bus Implementations may require tradeoffs in shielding effectiveness cable length the number of loads transfer rates and cost to achieve satisfactory system operation If shielded and unshielded cables are mixed within the same SCSI bus the effect of impedance mismatch must be carefully considered Proper impedance matching is especial...

Страница 80: ... 7 1 39 µs Reselect Identify MSG to Status T15 4 5 8 Command Dependent Reselect Identify MSG to Data media T16 4 5 11 Command Dependent Data to Status T17 4 5 15 Command Dependent Status to Command Complete MSG T18 4 5 5 8 15 0 98 µs Command Complete MSG to Bus Free T19 4 5 5 8 15 0 51 µs Data to Save Data Pointer MSG T20 4 5 14 4 00 µs Save Data Pointer MSG to Disconnect MSG T21 4 5 14 0 79 µs Co...

Страница 81: ... 5 13 0 12 µs MSG IN Byte Transfer T32 4 5 5 7 8 14 15 0 04 µs MSG OUT Byte Transfer T33 4 5 2 0 04 µs STATUS Byte Transfer T34 4 5 5 8 15 0 04 µs Synchronous Data Transfer Characteristics Request Signal Transfer Period 3 various 800 ns max Table 22 Drive activity LED status Spindle status Command status LED status Spinning up with DC power applied N A On until spinup is complete Spun down Start U...

Страница 82: ...72 Cheetah 18LP Product Manual Rev F ...

Страница 83: ...livery system Using a touch tone phone you can obtain technical support information by return FAX 24 hours daily This service is available worldwide Presales Support Presales Support Our Presales Support staff can help you determine which Seagate products are best suited for your specific application or computer system Disc 1 877 271 3285 Tape 1 800 626 6637 Online Tape Purchases US customers can ...

Страница 84: ... 1 905 660 4951 http www memofix com Adtech 1 905 812 8099 or 1 800 624 9857 FAX 1 905 812 7807 http www adtech1 com Brazil MA Informatica 55 21 516 6649 FAX 55 21 223 3156 e mail sgt_cso gbl com br European Support Services For European customer support dial the toll free number for your specific country for presales support techni cal support SeaFAX and warranty service If your country is not li...

Страница 85: ...enter at 31 20 316 7222 from 8 30 a m to 5 00 p m European central time Monday through Friday or send a FAX to 31 20 653 3513 The European call center is located in Amsterdam The Nether lands Asia Pacific Support Services Technical Support Australia 61 2 9725 3366 FAX 61 2 9725 4052 Hong Kong 852 2368 9918 FAX 852 2368 7173 Japan FAX 81 3 5462 2979 Singapore 65 488 7584 FAX 65 488 7528 Taiwan 886 ...

Страница 86: ...76 Cheetah 18LP Product Manual Rev F ...

Страница 87: ...1 bulkhead connector 57 bus device reset message 50 bytes per sector 48 bytes surface 9 bytes track 9 C cabinet cooling 42 cable 55 cache 10 11 12 cache buffer 7 cache miss 11 cache mode 10 cache operation 10 cache operation hit 12 cache segment 11 caching write data 11 Canadian Department of Communications 3 capacities 8 capacity drive programmable 8 case temperature 27 CE Marking 3 change defini...

Страница 88: ...n 42 drive power 37 drive primary defects list 35 drive SCSI timing 70 drive select header 55 drive spindle 41 drive transfer 11 drive volume 37 drive warranty 15 dynamic spindle brake 7 E ECC 13 ECC correction capability 7 electrical characteristics 55 67 electromagnetic compatibility 3 electromagnetic interference EMI 13 electromagnetic susceptibility 31 embedded servo 7 EMC compliance 3 EMI req...

Страница 89: ...its 68 LVD output signals 68 M magnetoresistive heads 5 mating connector 55 58 59 mating flat cable connector 58 maximum current requirements 20 maximum operating current 20 maximum starting current 19 ME jumper 41 mean time between failure See MTBF media 7 50 media defect 13 media defect induced error 13 medium error 13 message protocol 54 message protocol system 36 messages SCSI interface 45 mis...

Страница 90: ...fetch ceiling field 12 prefetch data 12 prefetch field 12 prefetch hit 12 prefetch mode 10 prefetch of contiguous blocks 12 prefetch operation 10 12 prefetch segmented cache control 10 preventive maintenance 13 15 printed circuit board See PCB PRML read channel electronics 5 product data page 49 programmable drive capacity 8 R radio interference regulations 3 read 11 read command 11 12 read data 1...

Страница 91: ...nd 19 start unit command 41 start stop time 10 status 36 stop spindle 10 stop time 10 storage capacity 35 straight in connector 60 strict bit in Mode page 00h 11 supply voltage 20 support services 73 synchronous data transfer 54 synchronous data transfer operation 71 synchronous data transfer period 54 synchronous transfer period 71 system chassis 43 system recovery procedures 13 T technical suppo...

Страница 92: ...82 Cheetah 18LP Product Manual Rev F write protect 41 write retry count 35 Z zoned bit recording ZBR 7 ...

Страница 93: ......

Страница 94: ...Seagate Technology Inc 920 Disc Drive Scotts Valley California 95066 4544 USA Publication Number 83329400 Rev F Printed in USA ...

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