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Cheetah 36XL Product Manual, Rev. E

5

3.0

General description

Cheetah 36XL drives combine giant magnetoresistive (GMR) heads, partial response/maximum likelihood
(PRML) read channel electronics, embedded servo technology, and a wide SCSI Ultra160 interface to provide
high performance, high capacity data storage for a variety of systems including engineering workstations, net-
work servers, mainframes, and supercomputers.

Ultra160 SCSI uses negotiated transfer rates. These transfer rates will occur only if your host adapter supports
these data transfer rates and is compatible with the required hardware requirements of the I/O circuit type. This
drive also operates at Ultra160 data transfer rates.

Table 1 lists the features that differentiate the Cheetah 36XL models.

Table 1:

Drive model number vs. differentiating features

[1]

See Section 9.6 for details and definitions.

The drive records and recovers data on approximately 3.0-inch (74 mm) non-removable discs.

The drive supports the Small Computer System 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 36XL family of drives, and the

SCSI Interface Product Manual

, part number

75789509, which describes the general interface characteristics of this and other families of Seagate SCSI
drives.

The drive’s interface supports multiple initiators, disconnect/reconnect, and automatic features that relieve the
host from the necessity of knowing the physical characteristics of the targets (logical block addressing is used).

The head and disc assembly (HDA) is sealed at the factory. Air circulates within the HDA through a non-
replaceable filter to maintain a contamination-free HDA environment.

Refer to Figure 2 for an exploded view of the drive. This exploded view is for information only—never disassem-
ble the HDA and do not attempt to service items in the sealed enclosure (heads, media, actuator, etc.) as this
requires special facilities. The drive contains no replaceable parts. Opening the HDA voids your warranty.

Cheetah 36XL drives use a dedicated landing zone at the innermost radius of the media to eliminate the possi-
bility of destroying or degrading data by landing in the data zone. The drive automatically goes to the landing
zone when power is removed.

Model number

Number
of active
heads

I/O circuit type [1]

Number of I/O
connector pins

Number of I/O
data bus bits

Data buffer
size (MB)

ST336705LW

8

Single-ended (SE) and low
voltage differential (LVD)

68

16

4

ST336705LC

8

Single-ended (SE) and low
voltage differential (LVD)

80

16

4

ST318405LW

4

Single-ended (SE) and low
voltage differential (LVD)

68

16

4

ST318405LC

4

Single-ended (SE) and low
voltage differential (LVD)

80

16

4

ST39205LW

2

Single-ended (SE) and low
voltage differential (LVD)

68

16

4

ST39205LC

2

Single-ended (SE) and low
voltage differential (LVD)

80

16

4

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Содержание Cheetah 36XL ST318405LC

Страница 1: ... Cheetah 36XL Family ST336705LW LC ST318405LW LC ST39205LW LC Product Manual Volume 1 ...

Страница 2: ......

Страница 3: ... Cheetah 36XL Family ST336705LW LC ST318405LW LC ST39205LW LC Product Manual Volume 1 ...

Страница 4: ...LC Cheetah SeaFAX 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 publica tion may be reproduced in any form without written permission of Seagate Technology LLC ...

Страница 5: ...eed the SCSI interface information order the SCSI Interface Product Manual Volume 2 part number 75789509 Revision Date Writer Engineer Sheets Affected Rev A 12 11 2000 K Schweiss B Reynolds 1 1 v thru ix 1 83 Rev B 02 27 2001 K Schweiss A Steele 4 Rev C 05 24 2001 K Schweiss B Reynolds 4 51 53 and 55 Rev D 07 30 2001 K Schweiss A Steele 3 and 38 Rev E 10 09 2001 K Schweiss B Reynolds 18 40 42 49 5...

Страница 6: ......

Страница 7: ...acteristics 9 4 3 Start stop time 10 4 4 Prefetch multi segmented cache control 10 4 5 Cache operation 11 4 5 1 Caching write data 11 4 5 2 Prefetch operation 12 4 5 3 Optimizing cache performance for desktop and server applications 12 5 0 Reliability specifications 15 5 1 Error rates 15 5 1 1 Environmental interference 15 5 1 2 Read errors 15 5 1 3 Write errors 15 5 1 4 Seek errors 15 5 2 Reliabi...

Страница 8: ...essages supported 45 9 3 SCSI interface commands supported 46 9 3 1 Inquiry Vital Product data 49 9 3 2 Mode Sense data 49 9 4 SCSI bus conditions and miscellaneous features supported 57 9 5 Synchronous data transfer 58 9 5 1 Synchronous data transfer periods supported 58 9 5 2 REQ ACK offset 58 9 6 Physical interface 58 9 6 1 DC cable and connector 58 9 6 2 SCSI interface physical description 60 ...

Страница 9: ...ure 11 ST39205 DC current and power vs input output operations per second LVD 30 Figure 12 Location of HDA Temperature Check Point 31 Figure 13 Recommended mounting 33 Figure 14 LW mounting configuration dimensions 35 Figure 15 LC mounting configuration dimensions 36 Figure 16 J6 jumper header 40 Figure 17 J5 jumper header on LW model only 41 Figure 18 J2 option select header 42 Figure 19 LW model...

Страница 10: ......

Страница 11: ...his manual The SCSI Interface Product Manual part num ber 75789509 describes general SCSI interface characteristics of this and other families of Seagate drives The SCSI Interface Product Manual references information from the documents listed in Section 2 3 From this point on in this product manual the reference to Cheetah 36XL models is referred to as the drive unless references to individual mo...

Страница 12: ...2 Cheetah 36XL Product Manual Rev E ...

Страница 13: ...operly 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 shields grounded to the enclosure and to the host con troller 2 1 2 Electromagnetic sus...

Страница 14: ...nternational Manufacturing start date 01 2001 Manufacturer nationality Singapore Taiwanese BSMI If this model has two Chinese words meaning EMC certification followed by an eight digit identification num ber as a Marking it complies with Chinese National Standard CNS 13438 and meets the Electromagnetic Compatibility EMC Framework requirements of the Taiwanese Bureau of Standards Metrology and Insp...

Страница 15: ...ilies of Seagate SCSI drives The drive s interface supports multiple initiators disconnect reconnect and automatic features that relieve the host from the necessity of knowing the physical characteristics of the targets logical block addressing is used The head and disc assembly HDA is sealed at the factory Air circulates within the HDA through a non replaceable filter to maintain a contamination ...

Страница 16: ...r is applied to the drive and the head load process begins Cheetah 36XL 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: ...performed when power is applied to the drive 1 1 Interleave Zoned bit recording ZBR Vertical horizontal or top down mounting Dynamic spindle brake 4 096 kbyte data buffer Hot plug compatibility Section 9 6 4 2 lists proper host connector needed for LC model drives Drive Self Test DST 3 2 Media characteristics The media used on the drive has a diameter of approximately 3 0 inches 76 2 mm The alumin...

Страница 18: ...l not change the capacity it is currently formatted to have A number in the number of blocks field that is less than the maximum number of LBAs changes the total drive capacity to the value 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 ...

Страница 19: ...128 241 128 241 128 Bytes average rounded off values Bytes surface 4 577 5 4 577 5 4 577 5 Mbytes unformatted rounded off values Tracks surface total 19 036 19 036 19 036 Tracks user accessible Tracks inch 24 406 24 406 24 406 TPI Peak bits inch 381 28 381 28 381 28 KBPI Internal data rate 320 490 320 490 320 490 Mbits sec variable with zone Disc rotational speed 10 022 10 022 10 022 r min 0 5 Ave...

Страница 20: ... a recoverable error condition is detected during the start sequence the drive executes a recovery procedure which may cause the time to become ready to exceed 20 seconds During spin up to ready time the drive responds to some com mands over the SCSI interface in less than 3 seconds after application of power Stop time is less than 15 sec onds from removal of DC power If the Motor Start Option is ...

Страница 21: ...he drive transfers the remaining requested LBs from the cache to the host in accordance with the disconnect reconnect specification men tioned above 3 If the prefetch feature is enabled refer to Section 4 5 2 for operation from this point Case B A Read command requests data the first LB of which is not in any segment of the cache 1 The drive fetches the requested LBs from the disc and transfers th...

Страница 22: ...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 fetch more data only if the Discontinuity DISC bit is set to one in bit 4 of byte 2 of Mode parameters page 08h Whenever prefetch read look ahead is enabled enabled by DRA 0 it operates under the control of ARLA Adaptive Read Look Ah...

Страница 23: ...es for drives with LW interface is the same as the firmware default values For drives with the LC interface the OEM saved values are changed to server mode PM bit 0 and the number of cache buffer segments are set to 3 03h Refer to Tables 9a through 9f in Section 9 3 2 for drive default values for the PM bit in Mode Page 0 Byte 2 and the number of cache buffer segments in Mode Page 8 Byte 13 Cachin...

Страница 24: ...14 Cheetah 36XL Product Manual Rev E ...

Страница 25: ...recovery procedures without operator interven tion 5 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 envir...

Страница 26: ...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 Systems will provide adequate cooling to ensure the case temperatures specified in Section 6 4 1 are not exceeded Drive failure means any stoppage or ...

Страница 27: ...SI Bus Reset could result in erroneous bus operations The SCSI bus termination and termination power source shall be external to the device being inserted or removed End users should not mix devices with high voltage differential HVD drivers and receivers and devices with SE LVD or multimode drivers and receivers on the same SCSI bus since the common mode voltages in the HVD environment may not be...

Страница 28: ... are logged and compared to the num ber of total operations for a given attribute The interval defines the number of operations over which to mea sure the rate The counter that keeps track of the current number of operations is referred to as the Interval Counter S M A R T measures error rate hence for each attribute the occurrence of an error is recorded A counter keeps track of the number of err...

Страница 29: ...d Recovered errors will not be reported as diagnostic failures 5 2 8 2 Implementation This section provides all of the information necessary to implement the DST function on this drive 5 2 8 2 1 State of the drive prior to testing The drive must be in a ready state before issuing the Send Diagnostic command There are multiple reasons why a drive may not be ready some of which are valid conditions ...

Страница 30: ...Value field in its Self Test Results Log page in non volatile memory The host may use Log Sense to read the results from up to the last 20 self tests performed by the drive The self test results value is a 4 bit field that reports the results of the test If the field is zero the drive passed with no errors detected by the DST If the field is not zero the test failed for the reason reported in the ...

Страница 31: ...to purchase additional boxes Seagate recommends shipping by an air ride carrier experienced in handling computer equipment Product repair and return information Seagate customer service centers are the only facilities authorized to service Seagate drives Seagate does not sanction any third party repair facilities Any unauthorized repair or tampering with the factory seal voids the warranty ...

Страница 32: ...22 Cheetah 36XL Product Manual Rev E ...

Страница 33: ...is inclusive of ripple noise and transient response 6 Operating condition is defined as random 8 block reads at 151 I Os per second Current and power speci fied at nominal voltages Decreasing 5 volts by 5 increases 5 volt current by 4 7 7 During idle the drive heads are relocated every 60 seconds to a random location within the band from track zero to one fourth of maximum track General Notes from...

Страница 34: ...art option on the J2 connector See Section 8 1 for pin selection information To delay the motor until the drive receives a Start Unit command enable the Enable Remote Motor Start option on the J2 connector 6 2 3 12 V Current profile Figure 3 identifies the drive 12 V current profile The current during the various times is as shown Note All times and currents are typical 5 V 150 mV pp from 0 to 100...

Страница 35: ...le 0 0 2 4 6 8 10 12 14 16 0 0 0 5 1 0 1 5 2 0 2 5 3 0 A Seconds AC Envelope 12 Volt Current during spindle start Typical Amperes Nominal average DC curve T0 T3 T1 T2 T5 T4 0 0 2 4 6 8 10 12 14 16 0 0 0 5 1 0 1 5 2 0 2 5 3 0 A Seconds 5 Volt Current during spindle start Typical Amperes Nominal average DC curve AC Envelope T0 T3 T1 T2 T5 T4 ...

Страница 36: ...e 0 0 2 4 6 8 10 12 14 16 0 0 0 5 1 0 1 5 2 0 2 5 3 0 A Seconds AC Envelope 12 Volt Current during spindle start Typical Amperes Nominal average DC curve T0 T3 T1 T2 T5 T4 0 0 2 4 6 8 10 12 14 16 0 0 0 5 1 0 1 5 2 0 2 5 3 0 A Seconds 5 Volt Current during spindle start Typical Amperes Nominal average DC curve AC Envelope T0 T3 T1 T2 T5 T4 ...

Страница 37: ... 0 0 2 4 6 8 10 12 14 16 0 0 0 5 1 0 1 5 2 0 2 5 3 0 A Seconds AC Envelope 12 Volt Current during spindle start Typical Amperes Nominal average DC curve T0 T3 T1 T2 T5 T4 0 0 2 4 6 8 10 12 14 16 0 0 0 5 1 0 1 5 2 0 2 5 3 0 A Seconds 5 Volt Current during spindle start Typical Amperes Nominal average DC curve AC Envelope T0 T3 T1 T2 T5 T4 ...

Страница 38: ...btain operating power for typical random read operations refer to the following two I O rate curves see Figures 9 Locate the typical I O rate for a drive in your system on the horizontal axis and read the correspond ing 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 ST336705 DC current and power vs input output opera...

Страница 39: ...ting power for typical random read operations refer to the following two I O rate curves see Figures 10 Locate the typical I O rate for a drive in your system on the horizontal axis and read the corre sponding 5 volt current 12 volt current and total watts on the vertical axis To calculate BTUs per hour mul tiply watts by 3 4123 Figure 10 ST318405 DC current and power vs input output operations pe...

Страница 40: ...With cooling designed to maintain the case temperature the drive meets all specifications over a 41 F to 131 F 5 C to 55 C drive ambient temperature range with a maximum temperature gradient of 36 F 20 C per hour The enclosure for the drive should be designed such that the temperatures are not exceeded Air flow may be needed to achieve these temperature values see Section 8 3 Operation at case tem...

Страница 41: ... 305 to 3 048 meters b Non operating 1000 to 40 000 feet 305 to 12 195 meters 6 4 4 Shock and vibration Shock and vibration limits specified in this document are measured directly on the drive chassis If the drive is installed in an enclosure to which the stated shock and or vibration criteria is applied resonances may occur internally to the enclosure resulting in drive movement in excess of the ...

Страница 42: ... damage or performance degradation Shock may be applied in the X Y or Z axis The drive subjected to nonrepetitive shock not exceeding 250 Gs at a maximum duration of 2 msec half sinewave does not exhibit device damage or performance degradation Shock may be applied in the X Y or Z axis d Packaged Disc drives shipped as loose load not palletized general freight will be packaged to withstand drops f...

Страница 43: ...Cheetah 36XL Product Manual Rev E 33 Figure 13 Recommended mounting Z Y X Z Y X ...

Страница 44: ...ntinue when normal operating vibration levels are resumed This assumes system recovery 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 ...

Страница 45: ...ilograms J H L B A S K 1 M C R F 1 D E G 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 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 25 40 146 05 101 60 95 25 3 18 44 45 41 28 28 50 101 60 6 35 41 60 4 60...

Страница 46: ...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 R S T U 25 40 146 05 101 60 95 25 3 18 44 45 41 28 28 50 101 60 6 35 41 60 4 60 1 20 66 50 7 00 0 38 0 38 1 000 5 75 4 000 3 750 125 1 750 1 625 1 122 4 000 250 1 638 181 040 2 618 276 015 015 max max 010 010 010 010 020 020 010 010 010 020 max 010 040 max max max max 25 25 25 25 50 50 25 25 25 50 ma...

Страница 47: ...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 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 level ...

Страница 48: ...overy 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 SCSI Interface Product Manual part number 75789509 Message Protocol System is described in the SCSI Interface Product Manu...

Страница 49: ... 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 purchased drive installation software If necessary see Section 10 for Seagate support services telephone numbers Do not remove the manufacturer s installed lab...

Страница 50: ...er 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 14 S...

Страница 51: ... Ground Host 4 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 no...

Страница 52: ...n 80 pin J1 I O connector See tables 15 and 16 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 16 or to J5 pin 8 see Figure 17 and the drives 5V power source throug...

Страница 53: ...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 drive is disabled Off Drive checks for parity and reports r...

Страница 54: ...lane mounting surface distortion units of inches or millimeters The out of plane distortion x is determined by defining a plane with three of the four mounting points fixed and evaluating the out of plane deflection of the fourth mounting point when a known force F is applied to the fourth point Note Before mounting the drive in any kind of 3 5 inch to 5 25 inch adapter frame verify with Seagate T...

Страница 55: ...family drives Notes 1 Extended messages see the SCSI Interface Product Manual part number 75789509 2 Supports all options except qas_req and iu_req Table 4 SCSI messages supported by Cheetah 36XL 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 I O process 12h Y Disconn...

Страница 56: ...orted 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 Applicat...

Страница 57: ...pacity 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 Reserve 16h Y 3rd party reserve ...

Страница 58: ... Y Translate 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 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 LBdat...

Страница 59: ...rive for each Vital Product Data page the initiator wants the drive to send back 9 3 2 Mode Sense data The Mode Sense command provides a means for the drive to report its operating parameters to the initiator The drive maintains four sets of Mode parameters Default values Saved values Current values and Change able values Default values are hard coded in the drive firmware that is stored in flash ...

Страница 60: ...0 and 01 those particular bytes are never change able The Changeable values list can only be changed by downloading new firmware into the flash EPROM On standard OEM drives the Saved values are taken from the default values list and stored into the saved val ues storage location on the media prior to shipping When a drive is powered up it takes saved values from the media and stores them to the cu...

Страница 61: ...0 00 11 00 00 01 DA 02 00 00 01 00 68 00 6C 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 SAV 84 16 00 4A 5C 08 00 00 00 00 00 00 00 00 00 00 00 00 00 00 27 27 00 00 04 DEF 84 16 00 4A 5C 08 00 00 00 00 00 00 00 00 00 00 00 00 00 00 27 27 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 SAV 87 0A 00 0B F0 00 00 ...

Страница 62: ...s set to the firmware default condition one for drives with the LW interface Drives man ufactured with all other interfaces LC set the Saved value of the PM bit set to the Server mode zero 3 When the Performance Mode bit Page 0 Byte 2 Bit 7 is set to Server mode zero the Number of Cache Segments should be set to three 03h When the Performance Mode bit Page 0 Byte 2 Bit 7 is set to Desktop mode one...

Страница 63: ...0 00 11 00 00 01 DA 02 00 00 01 00 68 00 6C 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 SAV 84 16 00 4A 5C 04 00 00 00 00 00 00 00 00 00 00 00 00 00 00 27 27 00 00 04 DEF 84 16 00 4A 5C 04 00 00 00 00 00 00 00 00 00 00 00 00 00 00 27 27 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 SAV 87 0A 00 0B F0 00 00 ...

Страница 64: ...s set to the firmware default condition one for drives with the LW interface Drives man ufactured with all other interfaces LC set the Saved value of the PM bit set to the Server mode zero 3 When the Performance Mode bit Page 0 Byte 2 Bit 7 is set to Server mode zero the Number of Cache Segments should be set to three 03h When the Performance Mode bit Page 0 Byte 2 Bit 7 is set to Desktop mode one...

Страница 65: ... 00 11 00 00 01 DA 02 00 00 01 00 5C 00 5C 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 SAV 84 16 00 4A 5C 02 00 00 00 00 00 00 00 00 00 00 00 00 00 00 27 27 00 00 04 DEF 84 16 00 4A 5C 02 00 00 00 00 00 00 00 00 00 00 00 00 00 00 27 27 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 SAV 87 0A 00 0B F0 00 00 0...

Страница 66: ...s set to the firmware default condition one for drives with the LW interface Drives man ufactured with all other interfaces LC set the Saved value of the PM bit set to the Server mode zero 3 When the Performance Mode bit Page 0 Byte 2 Bit 7 is set to Server mode zero the Number of Cache Segments should be set to three 03h When the Performance Mode bit Page 0 Byte 2 Bit 7 is set to Desktop mode one...

Страница 67: ...ating 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 Queu...

Страница 68: ...ection 9 8 and Section 9 9 for additional terminator information Figures 19 and 20 show the locations of the DC power connector SCSI interface connector drive select head ers and option select headers Details of the physical electrical and logical characteristics are given in sections following while the SCSI operational aspects of Seagate drive interfaces are given in the SCSI Interface Product M...

Страница 69: ...I I O connector Figure 20 LC model drive physical interface 80 pin J1 SCSI I O connector J5 Pin 1 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 1 PCBA J2 J1 80 Pin SCSI I O and Power Connector Pin 1 J6 ...

Страница 70: ...to the device or from a line in the interface cable specifically powered for that purpose LC and LW model drives do not have onboard termination 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 Standard X3T10 1302D sections 6 4 and 6 5 for the maximum number of devices th...

Страница 71: ... connector consisting of two rows of 34 female pins with adjacent pins 50 mils apart The connector is keyed by means of its shape see Figure 22 9 6 4 2 Mating connectors for LC model drives The nonshielded connector shall be an 80 conductor connector consisting of two rows of 40 contacts with adja cent contacts 50 1 27 mm mils apart see Figure 23 I O connection using a cable is not recommended The...

Страница 72: ...th 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 21 SCSI daisy chain interface cabling for LW drives Straight in connector Hot plug version with ground guide pin...

Страница 73: ...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 74: ...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 75: ...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 76: ... 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 77: ...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 78: ...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 79: ...on Cheetah 36XL LW and LC model drives are multimode devices That is their I O circuits can operate as either single ended or low voltage differential drivers receivers selectable using the I O DIFFSENS line See ANSI Standard X3T10 1302D for detailed 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 cir...

Страница 80: ... have the following input characteristics when measured at the disk drive connector Steady state Low level output voltage 0 030 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 1302D These voltages shall be measured between the output term...

Страница 81: ...tions cables of different impedances should not be used in the same bus Implementations may require trade offs 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 espe...

Страница 82: ...elect 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 Command Byte Transfer T22 4 5 4 0 04 µs Next Command Byte Access 4 5 4 Next ...

Страница 83: ... µs Next Data Out Byte access media 2 T31 4 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 19 Drive activity remote LED signal status Spindle status Command status Remote LED signal status Spinning up ...

Страница 84: ...74 Cheetah 36XL Product Manual Rev E ...

Страница 85: ...5 toll free 9 A M to 7 P M eastern time Monday through Friday Tape Purchases US customers can purchase Seagate data cartridges tape supplies accessories and select Seagate tape drive products 24 hours daily at buytape seagate com Automated Services SeaFONE 1 800 SEAGATE is Seagate s toll free number 1 800 732 4283 to access our automated self help services Using a touch tone phone you can find ans...

Страница 86: ...87 Warranty Service Call Center Toll free Direct dial FAX Internet USA 1 800 468 3472 1 405 936 1456 1 405 936 1462 Mexico and Latin America 1 405 936 1456 1 405 936 1464 Canada Memofix 1 800 636 6349 1 905 660 4936 1 905 660 4951 www memofix com Adtech 1 800 624 9857 1 905 812 8099 1 905 812 7807 www adtech1 com Brazil MA Centro de Serviços 55 21 509 7267 55 21 507 6672 e mail sgt_cso gbl com br ...

Страница 87: ...ervices For Asia Pacific presales and technical support dial the toll free number for your specific country The Asia Pacific toll free numbers are available from 6 00 A M to 10 45 A M and 12 00 P M to 6 00 P M Australian east ern time Monday through Friday If your country is not listed here direct dial one of our technical support loca tions Call Center Toll free Direct dial FAX Australia 1800 14 ...

Страница 88: ...78 Cheetah 36XL Product Manual Rev E ...

Страница 89: ...ector 48 bytes surface 9 bytes track 9 C cabinet cooling 44 cable 58 cache 10 11 12 cache buffer 7 cache miss 11 cache mode 11 cache operation 10 11 cache operation hit 12 cache segment 11 caching write data 11 Canadian Department of Communications 3 capacity drive programmable 8 case temperature 30 CE Marking 3 change definition command 46 changeable bit 50 changeable value 49 50 check condition ...

Страница 90: ... 72 drive select header 58 drive spindle 43 drive transfer 11 drive volume 39 drive warranty 16 dynamic spindle brake 7 E ECC 15 ECC correction capability 7 electrical characteristics 58 69 electromagnetic compatibility 3 electromagnetic interference EMI 15 electromagnetic susceptibility 34 embedded servo 7 EMC compliance 3 EMI requirements 3 environmental control 34 environmental interference 15 ...

Страница 91: ...ing current 23 maximum starting current 23 ME jumper 43 mean time between failure See MTBF media 7 50 media defect 15 media defect induced error 15 medium error 16 message protocol 58 message protocol system 38 messages SCSI interface 45 miscellaneous features 57 mode page 01 50 mode page 08h 10 11 mode parameter 49 page 08h 12 mode select command 10 11 49 50 mode select page 08h 12 mode sense com...

Страница 92: ...ted cache control 10 preventive maintenance 15 16 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 11 read error 15 read error rate 15 37 read operation 11 read retry count 37 read write head 9 ready 50 receive diagnostic results 38 receiver circuits 70 recommende...

Страница 93: ...62 strict bit in Mode page 00h 11 supply voltage 23 support services 75 synchronous data transfer 58 synchronous data transfer operation 73 synchronous data transfer period 58 synchronous transfer period 73 system chassis 44 system recovery procedures 15 T Taiwanese BSMI 4 technical support services 75 temperature 10 30 44 ambient 30 case 30 gradient 30 non operating 31 regulation 3 See also cooli...

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Страница 96: ...Seagate Technology LLC 920 Disc Drive Scotts Valley California 95066 4544 USA Publication Number 75789517 Rev E Printed in USA ...

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