Seagate Cheetah ST3146854 User Manual Download Page 21

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Cheetah 15K.4 SCSI Product Manual, Rev. D

4.0

Performance characteristics

4.1

Internal drive characteristics (transparent to user)

4.2

SCSI performance characteristics (visible to user)

The values given in Section 4.2.1 apply to all models of the Cheetah 15K.4 SCSI family unless otherwise spec-
ified. Refer to Section 9.10 and to the SCSI Interface Product Manual for additional timing details.

ST3146854

ST373454

ST336754

Drive capacity

146.8

73.4

36.7

GByte (formatted, rounded off values)

Read/write heads

Bytes/track

471,916

Bytes (average, rounded off values)

Bytes/surface

18,351

Mbytes (unformatted, rounded off val-
ues)

Tracks/surface (total)

50,864

Tracks (user accessible)

Tracks/inch

85,000

TPI

Peak bits/inch

628

KBPI

Internal data rate

685-1,142

685-1,142 685-1,142 Mbits/sec (variable with zone)

Disc rotational speed

15k

r/min

Average rotational latency

2.0

msec

Summary of Contents for Cheetah ST3146854

Page 1: ...Cheetah 15K 4 SCSI ST3146854 ST373454 ST336754 Users Guide ...

Page 2: ......

Page 3: ...Cheetah 15K 4 SCSI ST3146854 ST373454 ST336754 Users Guide ...

Page 4: ...ogy LLC SeaTools SeaFONE SeaBOARD and SeaTDD are either registered trademarks or trademarks of Seagate Technology LLC Other product names are registered trademarks or trademarks of their 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 Seagate Technology LLC ...

Page 5: ...on status summary sheet Revision Date Sheets Affected Rev A 06 30 04 i iii 1 93 Initial release Rev B 07 14 04 Page 9 Rev C 01 13 05 Pages 9 12 25 26 28 29 30 31 32 33 and 38 Rev D 05 04 05 Pages 8 12 and 37 ...

Page 6: ......

Page 7: ...ormat command execution time minutes 12 4 2 3 Generalized performance characteristics 12 4 3 Start stop time 13 4 4 Prefetch multi segmented cache control 13 4 5 Cache operation 13 4 5 1 Caching write data 14 4 5 2 Prefetch operation 14 4 5 3 Optimizing cache performance for desktop and server applications 15 5 0 Reliability specifications 17 5 1 Error rates 17 5 1 1 Recoverable Errors 17 5 1 2 Un...

Page 8: ...ion 50 8 3 Cooling 50 8 4 Drive mounting 51 8 5 Grounding 51 9 0 Interface requirements 53 9 1 General description 53 9 2 SCSI interface messages supported 53 9 3 SCSI interface commands supported 54 9 3 1 Inquiry Vital Product data 58 9 3 2 Mode Sense data 59 9 4 SCSI bus conditions and miscellaneous features supported 63 9 5 Synchronous data transfer 64 9 5 1 Synchronous data transfer periods su...

Page 9: ... Figure 12 ST336754 DC current and power vs IOPS SE 33 Figure 13 ST336754 DC current and power vs IOPS LVD 33 Figure 14 Locations of the HDA temperature check point 34 Figure 15 Recommended mounting 36 Figure 16 LW mounting configuration dimensions 38 Figure 17 LC mounting configuration dimensions 39 Figure 18 J6 jumper header 46 Figure 19 J5 jumper header on LW models only 47 Figure 20 J2 option ...

Page 10: ......

Page 11: ...4 interface specifications to the extent described in this manual The SCSI Interface Product Manual part number 75789509 describes general SCSI interface characteristics of this and other families of Seagate drives From this point on in this product manual the reference to Cheetah 15K 4 SCSI models is referred to as the drive unless references to individual models are necessary Figure 1 Cheetah 15...

Page 12: ...2 Cheetah 15K 4 SCSI Product Manual Rev D ...

Page 13: ...stallation into a suitable enclosure prior to use As such the drive is supplied as a subassembly and is not subject to Subpart B of Part 15 of the FCC Rules and Regulations nor the Radio Interference Regulations of the Canadian Department of Communica tions The design characteristics of the drive serve to minimize radiation when installed in an enclosure that provides reasonable shielding As such ...

Page 14: ...lity 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 Australian C Tick If this model has the C Tick Marking it complies with the Australia New Zealand Standard AS NZS3548 1995 and meets the Electromagnetic Compatibility EMC Framework requirements of Australia s Spectrum Man agement Agency SMA Korean MIC If this model ha...

Page 15: ...416D Primary Commands 2 SPC 3 T10 1417D SCSI Block Commands SBC 2 T10 1157D SCSI Architectural Model 2 SAM 2 T10 1302D SPI 3 SCSI Parallel Interface version 3 T10 1365D SPI 4 SCSI Parallel Interface version 4 SFF 8451 Specification for SCA 2 Unshielded Connections Package Test Specification Seagate P N 30190 001 under 100 lb Package Test Specification Seagate P N 30191 001 over 100 lb Specificatio...

Page 16: ...6 Cheetah 15K 4 SCSI Product Manual Rev D ...

Page 17: ...em Interface SCSI as described in the ANSI SCSI interface specifications to the extent described in this manual volume 1 which defines the product performance char acteristics of the Cheetah 15K 4 SCSI family of drives and the SCSI Interface Product Manual volume 2 part number 75789509 which describes the general interface characteristics of this and other families of Seagate SCSI drives The drive...

Page 18: ...ltage differential LVD 16 bit I O data bus Asynchronous and synchronous data transfer protocol Firmware downloadable via SCSI interface Selectable even byte sector sizes from 512 to 528 bytes sector Programmable sector reallocation scheme Flawed sector reallocation at format time Programmable auto write and read reallocation Reallocation of defects on command post format ECC burst correction lengt...

Page 19: ...ng points for this product are 2 Seagate drives also may be used at the maximum available capacity at a given sector size but the excess capacity above the guaranteed level will vary between 10K and 15K families and from generation to gener ation depending on how each sector size actually formats out for zone frequencies and splits over servo bursts This added capacity potential may range from 0 1...

Page 20: ... incorporated during production or packaged at the manufacturing facility before shipping Some of the options available are not an exhaustive list of possible options Other capacities can be ordered depending on sparing scheme and sector size requested Single unit shipping pack The drive is normally shipped in bulk packaging to provide maximum protection against transit damage Units shipped indivi...

Page 21: ...nal timing details ST3146854 ST373454 ST336754 Drive capacity 146 8 73 4 36 7 GByte formatted rounded off values Read write heads 8 4 2 Bytes track 471 916 471 916 471 916 Bytes average rounded off values Bytes surface 18 351 18 351 18 351 Mbytes unformatted rounded off val ues Tracks surface total 50 864 50 864 50 864 Tracks user accessible Tracks inch 85 000 85 000 85 000 TPI Peak bits inch 628 ...

Page 22: ...ing controller overhead msec 1 2 1 Typical access times are measured under nominal conditions of temperature volt age and horizontal orientation as measured on a representative sample of drives 2 Access to data access time latency time Read Write Average Typical 3 5 4 0 Single Track Typical 0 2 0 4 Full Stroke Typical 7 4 7 9 ST3146854 ST373454 ST336754 Maximum with verify 90 60 30 Maximum no veri...

Page 23: ... operation somewhat as is noted in Section 4 5 1 and 4 5 2 All default cache and prefetch Mode parameter values Mode Page 08h for standard OEM versions of this drive family are given in Table 19 4 5 Cache operation In general 7 077 kbytes of the physical buffer space in the drive can be used as storage space for cache oper ations The buffer can be divided into logical segments Mode Select Page 08h...

Page 24: ... cache to be made avail able for future read cache hits The same buffer space and segmentation is used as set up for read functions The buffer segmentation scheme is set up or changed independently having nothing to do with the state of RCD When a write command is issued if RCD 0 the cache is first checked to see if any logical blocks that are to be written are already stored in the cache from a p...

Page 25: ... prefetch enabled 4 5 3 Optimizing cache performance for desktop and server applications Desktop and server applications require different drive caching operations for optimal performance This means it is difficult to provide a single configuration that meets both of these needs In a desktop environment you want to configure the cache to respond quickly to repetitive accesses of multiple small seg...

Page 26: ...16 Cheetah 15K 4 SCSI Product Manual Rev D ...

Page 27: ...e Errors Recovereable errors are those detected and corrected by the drive and do not require user intervention Recoverable Data errors will use correction although ECC on the fly is not considered for purposes of recov ered error specifications Recovered Data error rate is determined using read bits transferred for recoverable errors occurring during a read and using write bits transferred for re...

Page 28: ...TBF target is specified as device power on hours POH for all drives in service per failure MTBF per measurement period Estimated power on operating hours in the period Number of drive failures in the period Estimated power on operation 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 ...

Page 29: ... to a complete stop prior to completely removing the drive from the cabinet chassis Use of the Stop Spindle command or partial withdrawal of the drive enough to be disconnected from the power source prior to removal are methods for insuring that this requirement is met During drive insertion care should be taken to avoid exceeding the limits stated in Section 6 4 4 Shock and vibration in this manu...

Page 30: ...rs and the interval If the number of errors exceeds the threshold before the interval expires then the error rate is considered to be unacceptable If the number of errors does not exceed the threshold before the interval expires then the error rate is considered to be acceptable In either case the interval and failure counters are reset and the process starts over Predictive failures S M A R T sig...

Page 31: ...DST is a technology designed to recognize drive fault conditions that qualify the drive as a failed unit DST validates the functionality of the drive at a system level There are two test coverage options implemented in DST 1 Extended test 2 Short text The most thorough option is the extended test that performs various tests on the drive and scans every logical block address LBA of the drive The sh...

Page 32: ...r to the Seagate SCSI Interface Product Manual part number 75789509 for additional information about invoking DST 5 2 6 2 3 Short and extended tests DST has two testing options 1 short 2 extended These testing options are described in the following two subsections Each test consists of three segments an electrical test segment a servo test segment and a read verify scan segment Short test Function...

Page 33: ...mode by using the abort code in the DST Function Code field This will cause a 01 self test aborted by the application client code to appear in the self test results values log All other abort mechanisms will be reported as a 02 self test routine was interrupted by a reset condition 5 2 7 Product warranty Beginning on the date of shipment to customer and continuing for a period of five years Seagat...

Page 34: ...24 Cheetah 15K 4 SCSI Product Manual Rev D ...

Page 35: ... table Values indicated apply at the drive power connector The table shows current values in Amperes Table 12 ST3146854LC DC power requirements Notes SE mode LVD mode Voltage 5 V 12 V 5 V 12 V Regulation 5 5 5 2 5 5 2 Average idle current DC X 1 7 0 53 0 78 0 53 0 78 Maximum starting current peak DC DC peak AC AC 3σ 3σ 3 3 0 74 1 10 1 89 3 87 0 74 1 10 1 89 3 79 Delayed motor start max DC 3σ 1 4 0...

Page 36: ...ower specified at nominal voltages Decreasing 5 volts by 5 increases 5 volt current by 2 5 Decreasing 12 volt supply by 5 increases 12 volt current by 3 0 2 for ST373454 and ST336754 models 7 During idle the drive heads are relocated every 60 seconds to a random location within the band from three quarters to maximum track General Notes for Tables 12 13 and 14 1 Minimum current loading for each su...

Page 37: ...wer sequencing The drive protects against inadvertent writing during power up and down Daisy chain operation requires that power be supplied to the SCSI bus terminator to ensure proper termination of the peripheral I O cables To automatically delay motor start based on the target ID SCSI ID enable the Delay Motor Start option and disable the Enable Motor Start option on the J2 connector on LW mod ...

Page 38: ...28 Cheetah 15K 4 SCSI Product Manual Rev D Figure 2 Typical ST3146854 drive 12V LVD current profile Figure 3 Typical ST3146854 drive 5 V LVD current profile ...

Page 39: ...Cheetah 15K 4 SCSI Product Manual Rev D 29 Figure 4 Typical ST373454 drive 12V LVD current profile Figure 5 Typical ST373454 drive 5V LVD current profile ...

Page 40: ...30 Cheetah 15K 4 SCSI Product Manual Rev D Figure 6 Typical ST336754 drive 12V LVD current profile Figure 7 Typical ST336754 drive 5V LVD current profile ...

Page 41: ...12 volt current and total watts on the vertical axis To calculate BTUs per hour multiply watts by 3 4123 Figure 8 ST3146854 DC current and power vs IOPS SE Figure 9 ST3146854 DC current and power vs IOPS LVD ST3146854LC DC CURRENT POWER vs THROUGHPUT Single Ended Random 8 Block Reads 0 400 0 600 0 800 1 000 1 200 1 400 1 600 1 800 0 0 50 0 1 00 0 1 50 0 200 0 250 0 300 0 350 0 400 0 I Os per Secon...

Page 42: ...rent and total watts on the vertical axis To calculate BTUs per hour multiply watts by 3 4123 Figure 10 ST373454 DC current and power vs IOPS SE Figure 11 ST373454 DC current and power vs IOPS LVD ST373454LC DC CURRENT POWER vs THROUGHPUT Single Ended Random 8 Block Reads 0 400 0 600 0 800 1 000 1 200 1 400 1 600 1 800 0 0 50 0 1 00 0 1 50 0 200 0 250 0 300 0 350 0 400 0 I Os per Second Amperes 4 ...

Page 43: ...rent and total watts on the vertical axis To calculate BTUs per hour multiply watts by 3 4123 Figure 12 ST336754 DC current and power vs IOPS SE Figure 13 ST336754 DC current and power vs IOPS LVD ST336754LC DC CURRENT POWER vs THROUGHPUT Single Ended Random 8 Block Reads 0 400 0 600 0 800 1 000 1 200 1 400 1 600 1 800 0 0 50 0 1 00 0 1 50 0 200 0 250 0 300 0 350 0 400 0 I Os per Second Amperes 4 ...

Page 44: ...per hour Air flow may be needed in the drive enclosure to keep within this range see Section 8 3 Operation at HDA case temperatures outside this range may adversely affect the drives ability to meet specifications To confirm that the required cooling for the electronics and HDA case is provided place the drive in its final mechanical configuration perform random write read operations and measure t...

Page 45: ...continue when normal operating shock levels resume Shock may be applied in the X Y or Z axis Shock is not to be repeated more than two times per second c Non operating The limits of non operating shock shall apply to 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 dura...

Page 46: ...36 Cheetah 15K 4 SCSI Product Manual Rev D Figure 15 Recommended mounting Z Y X Z Y X ...

Page 47: ... 00 G zero to peak Vibration may be applied in the X Y or Z axis Non operating translational random flat profile 10 400 Hz 1 2 gRMS 6 4 5 Air cleanliness The drive is designed to operate in a typical office environment with minimal environmental control 6 4 6 Corrosive environment Seagate electronic drive components pass accelerated corrosion testing equivalent to 10 years exposure to light indust...

Page 48: ...g configuration dimensions See Section 8 4 Drive mounting Figure 16 LW mounting configuration dimensions Height 1 000 in 25 4 mm Width 4 000 in 101 6 mm Depth 5 75 in 146 05 mm Weight 1 6 pounds 0 73 kilograms J H L B S K 1 F 1 D E P 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 ...

Page 49: ...ghtening 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 H J K L M N P R S T U 26 10 147 00 101 60 95 25 3 18 44 45 28 50 101 60 6 35 41 60 4 60 1 02 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 max max max 25 25 25 25 5...

Page 50: ...40 Cheetah 15K 4 SCSI Product Manual Rev D ...

Page 51: ...de page Error recovery and defect management may involve the use of several SCSI commands the details of which are described in the SCSI Interface Product Manual The drive implements selectable error recovery time limits such as are required in video applications For addi tional information on this refer to the Error Recovery Page table in the SCSI Interface Product Manual which describes the Mode...

Page 52: ...retry count is reached during error recovery the state of the RC bit is examined If the RC bit is set the drive will transfer the unrecovered data with no error indication and continue to execute the remaining command If the RC bit is not set the drive will stop data transfer with the last good LBA and report a Check Condition Unrecovered Read Error ...

Page 53: ...t 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 SCSI Interface Product Manual Message Protocol System is described in the SCSI Interface Product Manual Several of the messages are used in the SCSI systems error management system The Request Sense command returns information to the host about numerous kinds o...

Page 54: ...ociated with a return to host servicing activity from BGMS only impacts the first com mand that interrupted BGMS This results in a typical delay of about 4 ms 7 4 1 Media Pre Scan Media Pre Scan is an optional feature that allows the drive to handle unrecovered media errors that would oth erwise have been found by the host system during critical data accesses early in the integration process at cu...

Page 55: ...ide 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 purc...

Page 56: ...n 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 5 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 ...

Page 57: ...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 ...

Page 58: ...ors 2 These signals are also on 80 pin J1 I O connector See tables 27 and 28 note 9 3 Voltage supplied by the drive 4 Dashed area is optional host circuitry external to the drive connected to host supplied optional usage plug 5 Do not connect anything to J5 pins 9 11 12 or J6 pins 13 20 6 Connect an external Drive Activity LED to J6 pins 11 and 12 see Figure 18 or to J5 pin 8 see Figure 19 and the...

Page 59: ...cted drive 1 starts after 12 second delay drive 2 starts after 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 dr...

Page 60: ...ature measurement guidelines described in Sec tion 6 4 1 In some cases forced airflow may be required to keep temperatures at or below the temperatures specified in Section 6 4 1 If forced air is necessary possible air flow patterns are shown in Figure 21 The air flow patterns are created by fans either forcing or drawing air as shown in the illustrations Conduction convection or other forced air ...

Page 61: ...3 5 inch to 5 25 inch adapter frame verify with Seagate Technology that the drive can meet the shock and vibration specifications while mounted in such an adapter frame Adapter frames that are available may not have a mechanical structure capable 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 ground ar...

Page 62: ...52 Cheetah 15K 4 SCSI Product Manual Rev D ...

Page 63: ...e Seagate SCSI Interface Product Manual 9 2 SCSI interface messages supported Table 16 lists the messages supported by the Cheetah 15K 4 SCSI family drives Table 16 SCSI messages supported by Cheetah 15K 4 SCSI family drives Message name Message code Supported by Cheetah 15K 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 I O p...

Page 64: ...a transfer request 1 Y Table 17 Commands supported by Cheetah 15K 4 SCSI family drive Command name Command code Supported by SCSI 2 3 Change Definition 40h N Compare 39h N Copy 18h N Copy and Verify 3Ah N Format Unit 1 04h Y DPRY bit supported N DCRT bit supported Y STPF bit supported Y IP bit supported Y DSP bit supported Y IMMED bit supported Y VS vendor specific N Inquiry 12h Y Date Code page C...

Page 65: ...unter page 0Eh Y Temperature page 0Dh Y Verify Error Counter page 05h Y Write error counter page 02h Y Mode Select same pages as Mode Sense 1Ah 15h Y 2 Mode Select 10 same pages as Mode Sense 1Ah 55h Y Mode Sense 1Ah Y 2 Caching Parameters page 08h Y Control Mode page 0Ah Y Disconnect Reconnect 02h Y Error Recovery page 01h Y Format page 03h Y Information Exceptions Control page 1Ch Y Notch and Pa...

Page 66: ...se 17h Y Release 10 57h Y Request Sense 03h Y Actual Retry Count bytes Y Extended Sense Y Field Pointer bytes Y Reserve 16h Y 3rd Party Reserve Y Extent Reservation N Reserve 10 56h Y 3rd Party Reserve Y Extent Reservation N Rezero Unit 01h Y Search Data Equal 31h N Search Data High 30h N Search Data Low 32h N Seek 0Bh Y Seek Extended 2Bh Y Send Diagnostics 1Dh Y Supported Diagnostics pages 00h Y ...

Page 67: ... This usually makes the drive inoperable 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 Ah and Bh supported 3 Y Write Extended 2Ah Y DPO bit Y FUA bit Y Write Long 3Fh Y Write Same 41h Y PBdata N LBdata N XDRead 52h N XDWrite 50h N XPWrite 51h N Table 17 Commands supported by Che...

Page 68: ...alues of bytes 18 through 26 of you particular model ST3146854LW 33 31 34 36 38 35 34 4C 57 ST3146854LC 33 31 34 36 38 35 34 4C 43 ST373454LW 33 37 33 34 35 34 4C 57 20 ST373454LC 33 37 33 34 35 34 4C 43 20 ST336754LW 33 33 36 37 35 34 4C 57 20 ST336754LC 33 33 36 37 35 34 4C 43 20 4 Copyright Year the year the drive s firmware code was built 9 3 1 Inquiry Vital Product data Instead of the standar...

Page 69: ...itled 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 changeable code had a hex value EF that equates to the binary pattern 1110 1111 If there is a zero in any bit position in the field it means that bit is not changeable Bits 7 6 5 3 2 1 and 0 are changeable because those bi...

Page 70: ...00 00 00 00 00 00 00 00 00 3a a7 00 00 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 SAV 87 0a 00 0b ff 00 00 00 00 00 ff ff DEF 87 0a 00 0b ff 00 00 00 00 00 ff ff CHG 87 0a 0f ff 00 00 00 00 00 00 ff ff SAV 88 12 14 00 ff ff 00 00 ff ff ff ff 00 20 00 00 00 00 00 00 DEF 88 12 14 00 ff ff 00 00 ff ff ff ff 00 20 00 00 00 00 00 00 CHG 88 12 b5 00 00 00 ff ff ff ff 00 ...

Page 71: ...00 00 00 00 00 00 00 00 00 3a a7 00 00 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 SAV 87 0a 00 0b ff 00 00 00 00 00 ff ff DEF 87 0a 00 0b ff 00 00 00 00 00 ff ff CHG 87 0a 0f ff 00 00 00 00 00 00 ff ff SAV 88 12 14 00 ff ff 00 00 ff ff ff ff 00 20 00 00 00 00 00 00 DEF 88 12 14 00 ff ff 00 00 ff ff ff ff 00 20 00 00 00 00 00 00 CHG 88 12 b5 00 00 00 ff ff ff ff 00 ...

Page 72: ...00 00 00 00 00 00 00 00 00 3a a7 00 00 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 SAV 87 0a 00 0b ff 00 00 00 00 00 ff ff DEF 87 0a 00 0b ff 00 00 00 00 00 ff ff CHG 87 0a 0f ff 00 00 00 00 00 00 ff ff SAV 88 12 14 00 ff ff 00 00 ff ff ff ff 00 20 00 00 00 00 00 00 DEF 88 12 14 00 ff ff 00 00 ff ff ff ff 00 20 00 00 00 00 00 00 CHG 88 12 b5 00 00 00 ff ff ff ff 00 ...

Page 73: ...ting System Y Asynchronous Data Transfer N Asynchronous Event Notification Y Attention Condition 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...

Page 74: ... ST DATA transfer periods 9 5 2 REQ ACK offset Cheetah 15K 4 SCSI family drives support REQ ACK offset values from 7 to 63 3Fh Offsets of 1 through 6 are negotiated to 0 asynchronous transfer 9 6 Physical interface This section describes the connectors cables signals terminators and bus timing of the DC and SCSI I O interface See Section 9 8 and Section 9 9 for additional terminator information Fi...

Page 75: ... for pin assignment mounted at the rear of the main PCBA Recommended part numbers of the mating connector are listed below but equiva lent parts may be used LC model drives receive power through the 80 pin I O connector See Tables 27 and 28 Type of cable Connector Contacts 20 14 AWG 14 AWG MP 1 480424 0 AMP 60619 4 Loose Piece AMP 61117 4 Strip ...

Page 76: ...8 pin J1 SCSI I O connector Figure 23 LC 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 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 J6 80 pin SCSI I O Connector Pin 1 ...

Page 77: ...ermination circuits Some type of external termination circuits must be provided for these drives by the end user or designers of the equipment into which the drives will be integrated See the ANSI T10 Standard referenced above for the maximum number of devices that can successfully operate at various interface transfer rates on SE and LVD buses LC model drives plug into PCBA or bulkhead connectors...

Page 78: ...subject to the electromagnetic concepts presented in Standard T10 1365D Rev 3 Section 6 For LC model drives installa tions with connectors on cables are not recommended 9 6 4 Mating connectors Part numbers for the different type connectors that mate with the various Cheetah 15K 4 SCSI I O connectors are given in the sections following 9 6 4 1 Mating connectors for LW model drives The nonshielded c...

Page 79: ...ts 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 Multiconnector 80 conductor cables should espe cially not be allowed since the power carrying conductors on the 80 conductor interface were not intende...

Page 80: ...cluding 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 has the very lowest priority 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 24 SCSI daisy chain interface cabling for LW drive...

Page 81: ...15 8 00 3 650 92 71 840 005 21 34 315 010 8 00 001 002dia 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 ...

Page 82: ... 12 70 500 2 15 0 10 2 places 57 87 0 2 2 278 008 Y 0 15 0059 M Y M 62 15 0 15 2 447 0 006 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 0 15 0059 M Y M ...

Page 83: ...9 10 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 2...

Page 84: ... 11 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 ...

Page 85: ...0 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 GND 5 ...

Page 86: ... 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 DB12 ...

Page 87: ...rounded open for the 1 setting grounded for the 0 setting Alternatively these pins may be driven by a 3 3V logic device pulled up to 3 3V through a pull up resistor recommended size of 10K ohm or grounded through some other means 9 7 Electrical description Cheetah 15K 4 SCSI drives are multimode devices That is their I O circuits can operate as either single ended or low voltage differential drive...

Page 88: ...gin at fast SCSI transfer rates 9 7 1 2 Single ended drivers receivers The maximum total cable length allowed with drives using single ended I O driver and receiver circuits depends on several factors Table 29 lists the maximum lengths allowed for different configurations of drive usage These values are from the SPI documents All device I O lines must have equal to or less than 25 pf capacitance t...

Page 89: ...osstalk and their lengths must be reduced as shown in Table 31 Table 30 Shielded round twisted pair cables into a multi drive backplane Cable description Differential impedance nominal Single ended impedance nominal Single ended capacitance maximum Time delay nominal Conductor DC resistance nominal Maximum shielded round twisted pair cable length for U160 U320 30 AWG solid 130 ohms 90 ohms 17 pF f...

Page 90: ... O connector or on the end of a short I O cable stub extending past the last cable connector LC drives are designed to be plugged into a backpanel connector without cabling 9 9 Terminator power LW drives You can configure terminator power from the drive to the SCSI bus or have the host adaptor or other device supply terminator power to the external terminator See Section 8 1 for illustrations that...

Page 91: ... 6 14 0 52 µs Disconnect to Arbitration for Reselect This measures disconnected CMD over head T11 4 5 6 Command Depen dent Target win Arbitration for Reselect T12 4 5 7 3 00 µs Arbitration to Reselect T13 4 5 7 1 60 µs Reselect to Identify MSG In T14 4 5 7 1 39 µs Reselect Identify MSG to Status T15 4 5 8 Command Depen dent Reselect Identify MSG to Data media T16 4 5 11 Command Depen dent Data to ...

Page 92: ...ss Byte 7 of 10 T23 10 7 4 5 4 0 13 µs 1 µs Next CDB Byte Access Byte 8 of 10 T23 10 8 4 5 4 0 12 µs 1 µs Next CDB Byte Access Byte 9 of 10 T23 10 9 4 5 4 0 12 µs 1 µs Next CDB Byte Access Byte 10 of 10 T23 10 10 4 5 4 0 12 µs 1 µs Data In Byte Transfer parameter T24 4 5 12 0 04 µs Data Out Byte Transfer parameter T25 4 5 13 0 04 µs Next Data In Byte Access parameter T26 4 5 12 0 12 µs Next Data O...

Page 93: ... Unit On while processing the command Spun down No command activity Off Spun down Write Read Buffer On while processing the command Spun down SCSI Bus Reset On while processing the reset Spun down Test Unit Ready On while processing the command Spun up No command activity Off Spun up Write Read On while processing the command Spun up SCSI Bus Reset On while processing the reset Spun up Test Unit R...

Page 94: ...84 Cheetah 15K 4 SCSI Product Manual Rev D ...

Page 95: ...OL pricing promotions and other channel related information To learn more about the benefits or to register go to reseller seagate com any time from anywhere in the world Automated phone services SeaFONE 1 800 SEAGATE is the Seagate toll free number 1 800 732 4283 to access our automated directory assistance for Seagate Service Center support options International callers can reach this service by...

Page 96: ...tside the US you can contact an Authorized Service Center for service USA Canada Latin America support services Seagate Service Centers Presales Support Call center Toll free Direct dial FAX Americas 1 877 271 32851 1 405 324 47301 1 405 324 4704 Technical Support Call center Toll free Direct dial FAX Americas 1 800 SEAGATE2 1 405 324 47002 1 405 324 3339 Customer Service Operations Warranty Servi...

Page 97: ...France 00 800 47324283 00 800 47324289 Germany 00 800 47324283 00 800 47324289 Ireland 00 800 47324283 00 800 47324289 Italy 00 800 47324283 00 800 47324289 Netherlands 00 800 47324283 00 800 47324289 Norway 00 800 47324283 00 800 47324289 Poland 00 800 311 12 38 00 800 311 12 38 Spain 00 800 47324283 00 800 47324289 Sweden 00 800 47324283 00 800 47324289 Switzerland 00 800 47324283 00 800 4732428...

Page 98: ...e Direct dial FAX Australia 1800 14 7201 China Mandarin 1 4 800 810 9668 86 10 6225 5336 Hong Kong 800 90 0474 Hong Kong Cantonese 1 4 001 800 0830 1730 India2 4 1 600 180 1104 Indonesia 001 803 1 003 2165 Japan3 4 0034 800 400 554 Korea3 4 007 98 8521 7635 Malaysia 1 800 80 2335 New Zealand 0800 443988 Singapore 800 1101 150 65 6488 7525 Taiwan Mandarin 1 4 00 800 0830 1730 Thailand 001 800 11 00...

Page 99: ...on feedback survey We are interested in your comments and suggestions regarding this publication Please take a few minutes to participate in our survey at the following URL http survey seagate com survey techpubs nsf Thank you for your time and comments ...

Page 100: ...90 Cheetah 15K 4 SCSI Product Manual Rev D ...

Page 101: ...3 14 15 buffer full 13 buffer full ratio 13 bulkhead connector 67 bus device reset message 59 bytes per sector 57 bytes surface 11 bytes track 11 C cable 65 cache 13 14 cache buffer 9 cache miss 13 cache mode 13 cache operation 13 cache operation hit 14 cache segment 13 caching write data 14 Canadian Department of Communications 3 capacities 10 capacity drive programmable 9 CE Marking 4 changeable...

Page 102: ...ntation 50 drive power 45 drive primary defects list 41 drive SCSI timing 81 drive select header 64 drive spindle 49 drive transfer 13 dynamic spindle brake 8 E ECC 17 ECC correction capability 8 electrical characteristics 64 77 electromagnetic compatibility 3 electromagnetic susceptibility 38 embedded servo 8 EMC compliance 4 EMI requirements 3 environmental control 37 environmental limits 34 env...

Page 103: ... 59 Media Pre Scan 44 message protocol 64 message protocol system 43 messages SCSI interface 53 miscellaneous features 63 mode page 01 59 mode page 08h 13 mode parameter 59 page 08h 15 mode select command 13 59 mode select page 08h 14 mode sense command 59 mode sense command page 08h 14 mode sense data 59 mode sense value 59 model number table 7 motor start command 13 motor start delay option 77 m...

Page 104: ...e 58 programmable drive capacity 9 R radio interference regulations 3 read 13 read command 13 14 read data 13 read error rate 17 41 read operation 13 read retry count 41 read write head 11 ready 59 receive diagnostic results 43 receiver circuits 78 recommended mounting 36 Recoverable Errors 17 reference documents 5 regulation 25 26 relative humidity 34 reliability 9 reliability and service 18 reli...

Page 105: ...fer operation 82 synchronous data transfer period 64 synchronous transfer period 82 system chassis 51 T technical support services 85 temperature 20 34 50 non operating 34 regulation 3 See also cooling temperature sensor 20 termination 27 terminator enable jumper TE 70 terminator power 80 terminator requirements 45 80 thermal monitor 20 TP1 position 49 tracks inch 11 tracks surface total 11 transf...

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Page 108: ...Seagate Technology LLC 920 Disc Drive Scotts Valley California 95066 4544 USA Publication Number 100220456 Rev D Printed in USA ...

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