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Cheetah 15K.6 SAS Product Manual, Rev. C

7.2.1

Conducted noise immunity

Noise is specified as a periodic and random distribution of frequencies covering a defined frequency range.
Maximum allowed noise values given below are peak-to-peak measurements and apply at the drive power
connector.

7.2.2

Power sequencing

The drive does not require power sequencing. The drive protects against inadvertent writing during power-up
and down.

7.2.3

Current profiles

The +12V and +5V current profiles are shown below in the following figures.

Note:

All times and currents are typical. See Tables 12, 14, and 16 for maximum current requirements.

+5V

250 mV pp from 100 Hz to 20 MHz.

+12V =

800 mV pp from 100 Hz to 8 KHz.

450 mV pp from 8 KHz to 20 KHz.

250 mV pp from 20 KHz to 5 MHz.

Содержание Cheetah ST3146356SS

Страница 1: ...Product Manual Cheetah 15K 6 SAS 100466193 Rev C July 2011 ST3450856SS ST3300656SS ST3146356SS ST3450056SS FDE ST3300056SS FDE ST3146756SS FDE ...

Страница 2: ...istered trademarks are the property of their respective owners No part of this publication may be reproduced in any form without written permission of Seagate Technology LLC Call 877 PUB TEK1 877 782 8351 to request permission One gigabyte or GB equals one billion bytes and one terabyte or TB equals one trillion bytes Your computer s operating system may use a different standard of measurement and...

Страница 3: ...execution time minutes 10 5 2 3 General performance characteristics 10 5 3 Start stop time 10 5 4 Prefetch multi segmented cache control 11 5 5 Cache operation 11 5 5 1 Caching write data 12 5 5 2 Prefetch operation 12 6 0 Reliability specifications 13 6 1 Error rates 13 6 1 1 Recoverable Errors 13 6 1 2 Unrecoverable Errors 13 6 1 3 Seek errors 14 6 1 4 Interface errors 14 6 2 Reliability and ser...

Страница 4: ...n 42 8 7 Idle Read After Write 42 9 0 Installation 43 9 1 Drive orientation 43 9 2 Cooling 43 9 3 Drive mounting 45 9 4 Grounding 45 10 0 Interface requirements 46 10 1 SAS features 46 10 1 1 task management functions 46 10 1 2 task management responses 46 10 2 Dual port support 47 10 3 SCSI commands supported 48 10 3 1 Inquiry data 52 10 3 2 Mode Sense data 53 10 4 Miscellaneous operating feature...

Страница 5: ... Presales Technical support Global Support Services telephone numbers business hours Authorized Service Centers For information regarding Warranty Support visit http www seagate com www en us support warranty_ _returns_assistance For information regarding Data Recovery Services visit http www i365 com For Seagate OEM Distribution partner portal visit https direct seagate com portal system For Seag...

Страница 6: ... 6 drives support the SAS Protocol specifications to the extent described in this manual The SAS Interface Manual part number 100293071 describes the general SAS characteristics of Cheetah 15K 6 and other Seagate SAS drives Model Number Full Disk Encryption FDE ST3450856SS No ST3300656SS No ST3146356SS No ST3450056SS Yes ST3300056SS Yes ST3146756SS Yes ...

Страница 7: ...t manual 3 1 1 Electromagnetic compatibility The drive as delivered is designed for system integration and installation into a suitable enclosure prior to use 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 Communications The design characteristics of the drive se...

Страница 8: ...l has the Korean Ministry of Information and Communication MIC logo it complies with paragraph 1 of Article 11 of the Electromagnetic Compatibility EMC Control Regulation and meets the Electromagnetic Compatibility Framework requirements of the Radio Research Laboratory RRL Ministry of Information and Communication Republic of Korea Taiwanese BSMI If this model has two Chinese words meaning EMC ce...

Страница 9: ...ble ANSI SAS documents SFF 8323 3 5 Drive Form Factor with Serial Connector SFF 8460 HSS Backplane Design Guidelines SFF 8470 Multi Lane Copper Connector SFF 8482 SAS Plug Connector ANSI INCITS xxx Serial Attached SCSI SAS Standard T10 1562 D ISO IEC 14776 xxx SCSI Architecure Model 3 SAM 3 Standard T10 1561 D ISO IEC 14776 xxx SCSI Primary Commands 3 SPC 3 Standard T10 1416 D ISO IEC 14776 xxx SC...

Страница 10: ...o continue to leverage your existing investment in SCSI while gaining a 3Gb s serial data transfer rate Cheetah 15K 6 SAS FDE models have provisions for Security of Data at Rest based on the standards defined by the Trusted Computing Group see www trustedcomputinggroup org Never disassemble the HDA and do not attempt to service items in the sealed enclosure heads media actu ator etc as this requir...

Страница 11: ...ontal or top down mounting Dynamic spindle brake 16 Mbyte data buffer Drive Self Test Background Media Scan Power Save Cheetah 15K 6 SAS FDE models have the following additional features Automatic data encryption decryption on all writes and reads to and from the media Cryptographic erase of user data for a drive that will be repurposed or scrapped Two independent data bands which each have it s o...

Страница 12: ...er than zero and less than the maximum number of LBAs in the Number of Blocks field changes the total drive capacity to the value in the Number of Blocks field A value greater than the maximum number of LBAs is rounded down to the maximum capacity 4 7 Factory installed options You may order the following items which are incorporated at the manufacturing facility during production or packaged befor...

Страница 13: ... 95 Gbits sec max disk rotation speed 15k 15k 15k RPM Avg rotational latency 2 0 2 0 2 0 msec One Gbyte equals one billion bytes when referring to hard drive capacity Accessible capacity may vary depending on operating environment and formatting 5 2 Seek time See Section 10 4 1 SAS physical interface on page 57 and the SAS Interface Manual part number 100293071 for additional timing details 5 2 1 ...

Страница 14: ...te data blocks Sector sizes variable to 512 520 and 528 kbytes Read write consecutive sectors on a track Yes Flaw reallocation performance impact for flaws reallocated at format time using the spare sectors per sparing zone reallocation scheme Negligible Average rotational latency 2 0 msec Assumes system ability to support the rates listed and no cable loss 1 MB sec 1 000 000 bytes sec 5 3 Start s...

Страница 15: ...e cache bits Of the 16 Mbytes physical buffer space in the drive approximately 13 000 kbytes can be used as a cache The buffer is divided into logical segments from which data is read and to which data is written The drive keeps track of the logical block addresses of the data stored in each segment of the buffer If the cache is enabled see RCD bit in the SAS Interface Manual data requested by the...

Страница 16: ... there at the beginning of the operation however the drive does not overwrite data that has not yet been written to the medium If write caching is enabled WCE 1 then the drive may return Good status on a write command after the data has been transferred into the cache but before the data has been written to the medium If an error occurs while writing the data to the medium and Good status has alre...

Страница 17: ...e detected and corrected by the drive and do not require user intervention Recoverable Data errors use retries and correction Application of ECC on the fly correction alone is not con sidered a Recovered Data error Recovered Data error rate is determined using read bits transferred for recoverable errors occurring during a read and using write bits transferred for recoverable errors occurring duri...

Страница 18: ...ction 7 4 may increase the AFR decrease the MTBF AFR and MTBF statistics are population statistics that are not relevant to individual units AFR and MTBF specifications are based on the following assumptions for Enterprise Storage System environ ments 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 ...

Страница 19: ...rmal read and write operations When the PERF bit is set the drive is considered to be in On line Mode Only and will not perform off line functions You can measure off line attributes and force the drive to save the data by using the Rezero Unit command Forcing S M A R T resets the timer so that the next scheduled interrupt is in two hours You can interrogate the drive through the host to determine...

Страница 20: ...s unacceptable To accom plish this a counter is incremented each time the error rate is unacceptable and decremented not to exceed zero whenever the error rate is acceptable If the counter continually increments such that it reaches the pre dictive threshold a predictive failure is signaled This counter is referred to as the Failure History Counter There is a separate Failure History Counter for e...

Страница 21: ... results value of the diagnostic log page if a functional failure is encountered during DST The channel and servo parameters are not modified to test the drive more stringently and the number of retries are not reduced All retries and recovery processes are enabled during the test If data is recoverable no failure condition will be reported regardless of the number of retries required to recover t...

Страница 22: ...s test the positioning mechanism The read operation tests the read head element and the media surface The write element is tested through read write read operations The integrity of the media is checked through a read verify scan of the media Motor functionality is tested by default as a part of these tests The anticipated length of the Extended test is reported through the Control Mode page 6 2 6...

Страница 23: ...s designated facility in accordance with Seagate s warranty procedure Seagate will pay for transporting the repair or replacement item to the customer For more detailed warranty information refer to the standard terms and conditions of purchase for Seagate products on your pur chase documentation The remaining warranty for a particular drive can be determined by calling Seagate Customer Service at...

Страница 24: ... apply at the drive connector Table 12 ST3450856SS DC power requirements Notes ST3450856SS 1 5 Gbit mode ST3450856SS 3 Gbit mode Amps Amps Amps Amps Voltage 5V 12V 2 5V 12V 2 Regulation 5 5 5 2 5 5 2 Avg idle current DCX 1 7 0 55 0 75 0 57 0 75 Maximum starting current peak DC DC 3σ 3 0 91 1 93 0 76 1 93 peak AC AC 3σ 3 1 13 4 18 0 87 4 36 Delayed motor start max DC 3σ 1 4 0 60 0 04 0 63 0 04 Peak...

Страница 25: ...erating current Typical DCX 1 6 1 0 57 1 21 0 59 1 21 Maximum DC 3σ 1 0 62 1 23 0 64 1 24 Maximum peak DC 3σ 1 14 2 70 1 16 2 72 Table 14 ST3300656SS DC power requirements Notes ST3300656SS 1 5 Gbit mode ST3300656SS 3 Gbit mode Amps Amps Amps Amps Voltage 5V 12V 2 5V 12V 2 Regulation 5 5 5 2 5 5 2 Avg idle current DCX 1 7 0 51 0 64 0 54 0 63 Maximum starting current peak DC DC 3σ 3 0 73 1 76 0 90 ...

Страница 26: ...perating current Typical DCX 1 6 0 59 1 09 0 62 1 09 Maximum DC 3σ 1 0 60 1 13 0 62 1 12 Maximum peak DC 3σ 1 14 2 60 1 14 2 60 Table 16 ST3146356SS DC power requirements Notes ST3146356SS 1 5 Gbit mode ST3146356SS 3 Gbit mode Amps Amps Amps Amps Voltage 5V 12V 2 5V 12V 2 Regulation 5 5 5 2 5 5 2 Avg idle current DCX 1 7 0 52 0 53 0 54 0 53 Maximum starting current peak DC DC 3σ 3 0 89 1 74 0 68 1...

Страница 27: ...ges 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 DC power requirement notes 1 Minimum current loading for each supply voltage is not less than 1 7 of the maximum operating current shown 2 The 5V and 12V supplies should employ separate ground returns 3 Where power is provided to multiple drives from a ...

Страница 28: ...wer connector 7 2 2 Power sequencing The drive does not require power sequencing The drive protects against inadvertent writing during power up and down 7 2 3 Current profiles The 12V and 5V current profiles are shown below in the following figures Note All times and currents are typical See Tables 12 14 and 16 for maximum current requirements 5V 250 mV pp from 100 Hz to 20 MHz 12V 800 mV pp from ...

Страница 29: ...Cheetah 15K 6 SAS Product Manual Rev C 25 Figure 1 Typical 450GB current profiles Figure 2 Typical 300GB current profiles ...

Страница 30: ...26 Cheetah 15K 6 SAS Product Manual Rev C Figure 3 Typical 146GB current profiles ...

Страница 31: ...power for typical random read operations refer to the following I O rate curve see Figure 4 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 4 ST3450856SS 3 Gbit DC current and power vs input output operations per sec...

Страница 32: ...ypical random read operations refer to the following I O rate curve see Figure 4 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 5 ST3450056SS FDE 3 Gbit DC current and power vs input output operations per second ...

Страница 33: ...ypical random read operations refer to the following I O rate curve see Figure 4 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 6 ST3300656SS 3 Gbit DC current and power vs input output operations per second ...

Страница 34: ...ypical random read operations refer to the following I O rate curve see Figure 4 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 ST3300056SS FDE 3 Gbit DC current and power vs input output operations per second ...

Страница 35: ...ypical random read operations refer to the following I O rate curve see Figure 4 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 8 ST3146356SS 3 Gbit DC current and power vs input output operations per second ...

Страница 36: ...ower for typical random read operations refer to the following I O rate curve see Figure 4 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 9 ST3146756SS FDE 3 Gbit DC current and power vs input output operations per ...

Страница 37: ...55 C drive ambient temperature range with a maximum temperature gradient of 36 F 20 C 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...

Страница 38: ...alf sinewave 25 Gs at a duration of 2 msec half sinewave 60 Gs at a duration of 2 msec half sinewave when performing reads only Shock may be applied in the X Y or Z axis Shock is not to be repeated more than once every 2 seconds b Operating abnormal Equipment as installed for normal operation does not incur physical damage while subjected to intermit tent shock not exceeding 40 Gs at a duration of...

Страница 39: ...ze Packaged product weight Drop height 600 cu in 9 800 cu cm Any 60 in 1524 mm 600 1800 cu in 9 800 19 700 cu cm 0 20 lb 0 to 9 1 kg 48 in 1219 mm 1800 cu in 19 700 cu cm 0 20 lb 0 to 9 1 kg 42 in 1067 mm 600 cu in 9 800 cu cm 20 40 lb 9 1 to 18 1 kg 36 in 914 mm Drives packaged in single or multipacks with a gross weight of 20 pounds 8 95 kg or less by Seagate for general freight shipment shall w...

Страница 40: ...ofile 10 500 Hz 1 2 gRMS 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 5 500 Hz 3G Amplitudes above 1 0 G in the frequency range of 5 22 Hz may be limited due...

Страница 41: ... affected by the installation environment The sil ver copper nickel and gold films used in Seagate products are especially sensitive to the presence of sulfide chloride and nitrate contaminants Sulfur is found to be the most damaging In addition electronic components should never be exposed to condensing water on the surface of the printed circuit board assembly PCBA or exposed to an ambient relat...

Страница 42: ... 17 125 20 14 793 50 80 2 000 101 60 25 4 000 010 2X 100 13 2X 3 942 98 42 3 875 20 68 814 33 40 1 315 0 76 030 0 13 005 0 13 005 3 50 38 138 015 0 25 010 0 99 039 0 41 016 36 37 1 432 4 57 MIN BLIND 18 MIN BLIND 0 36 014 UNITS OF MEASURE mm inches DRIVE CENTER LINE 4 22 X 90 166 X 90 4 22 X 90 166 X 90 Figure 12 Physical dimensions Height 1 028 in 26 11 mm Width 4 010 in 101 85 mm Depth 5 787 in ...

Страница 43: ... list is not altered after factory formatting Locations of defects found and reallocated during error recovery procedures after drive shipment are listed in the G list defects growth list The P and G lists may be referenced by the initiator using the Read Defect Data command Details of the SCSI commands supported by the drive are described in the SAS Interface Manual Also more information on the d...

Страница 44: ... ered error rate which may exceed the value given in this product manual A setting of zero 0 will result in the drive not performing error recovery For example suppose the read write recovery page has the RC bit set to 0 read retry count set to 4 and the recovery time limit field Mode Sense page 01 bytes 10 and 11 set to FF FF hex maximum A four LBA Read command is allowed to take up to 253 11 mse...

Страница 45: ...g the Start time after idle to 5ms all subsequent scans begin after 500ms of idle time Other features that normally use idle time to function will function normally because BMS functions for bursts of 800ms and then suspends activity for 100ms to allow other background functions to operate BMS interrupts immediately to service host commands from the interface bus while performing reads BMS will co...

Страница 46: ... a write command to rewrite the data DAR is most effective when AWRE and ARRE are enabled this is the default setting from the Seagate factory With AWRE and ARRE disabled DAR is unable to reallocate the failing location and will report an error sense code indicating that a write command is being attempted to a previously failing location 8 7 Idle Read After Write Idle Read After Write IRAW utilize...

Страница 47: ...hrough the SAS connector The drive is shipped from the factory low level formatted in 512 byte logical blocks You need to reformat the drive only if you want to select a different logical block size 9 1 Drive orientation The drive may be mounted in any orientation All drive performance characterizations however have been done with the drive in horizontal disks level and vertical drive on its side ...

Страница 48: ...wing air as shown in the illustrations Conduction convection or other forced air flow patterns are acceptable as long as the temperature measurement guide lines of Section 7 4 1 are met Figure 13 Air flow Above unit Under unit Note Air flows in the direction shown back to front or in reverse direction front to back Above unit Under unit Note Air flows in the direction shown or in reverse direction...

Страница 49: ...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 9 4 Grounding Signal ground PCBA and HDA ground are connected together in the drive and cannot be separated by the user The equipment in which the drive is mounted is connected directly to the HDA and PCBA with no electri cally isolating shock mount...

Страница 50: ...nagement functions Table 19 lists the SAS task management functions supported 10 1 2 task management responses Table 20 lists the SAS response codes returned for task management functions supported Table 19 SAS task management functions supported Task name Supported Abort Task Yes Clear ACA Yes Clear task set Yes Abort task set Yes Logical Unit Reset Yes Query Task Yes Table 20 Task management res...

Страница 51: ...speed negotiation it indicates the only sup ported speed is the speed selected by the first port If the first port to complete speed negotiation looses sync before the second port completes speed negotiation both ports revert back to the power on condition of allow ing either link rate 1 5 or 3 0 Gbits sec Subject to buffer availability the Cheetah 15K 6 drives support Concurrent port transfers Th...

Страница 52: ...bit supported Y IMMED bit supported Y VS vendor specific N Inquiry 12h Y Date Code page C1h Y Device Behavior page C3h 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...

Страница 53: ...ct Reconnect 02h Y Error Recovery page 01h Y Format page 03h Y Information Exceptions Control page 1Ch Y Background Scan mode subpage 01h Y Notch and Partition Page 0Ch N Protocol Specific Port page 19h Y Power Condition page 1Ah Y Rigid disk Drive Geometry page 04h Y Unit Attention page 00h Y Verify Error Recovery page 07h Y Xor Control page 10h N Mode Sense 10 same pages as Mode Sense 1Ah 5Ah Y ...

Страница 54: ... 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 Translate page 40h Y Set Limits 33h N Start Unit Stop Unit spindle ceases rotating 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...

Страница 55: ... usually makes the drive inoperable 3 Reference Mode Sense command 1Ah for mode pages supported 4 Y Yes Command is supported N No Command is not supported A Support is available on special request 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 21 Commands supported by Cheetah 15K 6 SAS family drives continued Command name Command code S...

Страница 56: ... 20 72 65 73 65 72 76 65 64 20 Copyright year changes with actual year SCSI Revision support Refer to the appropiate SPC release documentation for definitions PP 10 Inquiry data for an Inquiry command received on Port A 30 Inquiry data for an Inquiry command received on Port B R Four ASCII digits representing the last four digits of the product firmware release number S Eight ASCII digits represen...

Страница 57: ...e media prior to shipping 3 Current values Current values are volatile values being used by the drive to control its operation A Mode Select command can be used to change the values identified as changeable values Originally current values are installed from saved or default values after a power on reset hard reset or Bus Device Reset message 4 Changeable values Changeable values form a bit mask s...

Страница 58: ...0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 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 DEF 88 12 14 00 ff ff 00 00 ff ff ff ff 80 20 00 00 00 00 00 00 CHG 88 12 a5 00 00 00 ff ff ff ff 00 00 20 00 00 00 00 00 00 00 DEF 8a 0a 02 00 00 00 00 00 00 00 0e c4 CHG 8a 0a 03 f0 00 00 00 00 00 00 00 00 DEF 18 06 06 00 00 00 00 00 CHG 18 06 00 00 00 00 00 00 DEF 99 06 06...

Страница 59: ...0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 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 DEF 88 12 14 00 ff ff 00 00 ff ff ff ff 80 20 00 00 00 00 00 00 CHG 88 12 a5 00 00 00 ff ff ff ff 00 00 20 00 00 00 00 00 00 00 DEF 8a 0a 02 00 00 00 00 00 00 00 09 9c CHG 8a 0a 03 f0 00 00 00 00 00 00 00 00 DEF 18 06 06 00 00 00 00 00 CHG 18 06 00 00 00 00 00 00 DEF 99 06...

Страница 60: ... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 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 DEF 88 12 14 00 ff ff 00 00 ff ff ff ff 80 20 00 00 00 00 00 00 CHG 88 12 a5 00 00 00 ff ff ff ff 00 00 20 00 00 00 00 00 00 00 DEF 8a 0a 02 00 00 00 00 00 00 00 06 cc CHG 8a 0a 03 f0 00 00 00 00 00 00 00 00 DEF 18 06 06 00 00 00 00 00 CHG 18 06 00 00 00 00 00 00 DEF 99 06 ...

Страница 61: ...condition N Automatic contingent allegiance N Asynchronous event notification N Synchronized locked spindle operation Y Segmented caching N Zero latency read Y Queue tagging up to 64 queue tags supported Y Deferred error handling Y Parameter rounding controlled by Round bit in Mode Select page 0 Y Reporting actual retry count in Extended Sense bytes 15 16 and 17 N Adaptive caching Y SMP 1 in Mode ...

Страница 62: ... C Details of the physical electrical and logical characteristics are provided within this section The operational aspects of Seagate s SAS drives are provided in the SAS Interface Manual Figure 14 Physical interface SAS Interface connector ...

Страница 63: ... 1 27 6X 1 27 14X 15 875 0 35MIN 15 875 33 43 0 05 B 4 90 0 08 0 84 0 05 22X 0 15 B P15 P1 S7 S1 SEE Detail1 0 30 0 05 4X 4 00 0 08 0 15 D 0 30 0 05 2X 41 13 0 15 B B C C A A 0 20 B 42 73 REF C OF DATUM D L 1 10 R0 30 0 08 4X 2 00 3X 5 08 0 45 0 03 7X 0 10 M E 4 65 0 80 6X 7 62 5 92 0 52 0 08 x 45 ...

Страница 64: ...r preferred connector manufacturer for mating part information The SAS device connector is illustrated in Figures 15 and 16 6 10 Detail A 0 30 0 05 x 45 5X 0 40 0 05 X 45 3X CORING ALLOWED IN THIS AREA 2 25 0 05 4 85 0 05 0 10 B E S14 S8 4 40 0 15 SEE Detail 2 3 90 0 15 SECTION A A SECTION C C A 0 35 0 05 45 R0 30 0 08 C 1 95 0 08 0 08 0 05 1 23 0 05 0 08 0 05 Detail 2 CONTACT SURFACE FLUSH TO DAT...

Страница 65: ...ype Pin Signal name Signal type S1 Port A Ground P1 NC reserved 3 3Volts S2 Port A_in Diff input pair P2 NC reserved 3 3Volts S3 Port A_in P3 NC reserved 3 3Volts S4 Port A Ground P4 Ground S5 Port A_out Diff output pair P5 Ground S6 Port A_out P6 Ground S7 Port A Ground P7 5 Volts charge S8 Port B Ground P8 5 Volts S9 Port B_in Diff input pair P9 5 Volts S10 Port B_in P10 Ground S11 Port A Ground...

Страница 66: ...must be distributed as evenly as possible among the pins Current to the drive through the long power pins may be limited by the system to reduce inrush current to the drive during hot plugging 10 5 Signal characteristics This section describes the electrical signal characteristics of the drive s input and output signals See Table 25 for signal type and signal name information 10 5 1 Ready LED Out ...

Страница 67: ...cs 10 5 2 1 Eye masks 10 5 2 1 1 Eye masks overview The eye masks are graphical representations of the voltage and time limits on the signal at the compliance point The time values between X1 and 1 X1 cover all but 10 12 of the jitter population The random content of the total jitter population has a range of 7 standard deviations Table 27 LED drive signal State Test condition Output voltage LED o...

Страница 68: ...alk are taken into account 10 5 2 1 3 Jitter tolerance masks Figure 19 describes the receive tolerance eye masks and is constructed using the X2 and Z2 values given in table 31 X1OP is half the value for total jitter intable 31 and X1TOL is half the value for total jitter in table 32 for jitter frequencies above bit rate 1 667 Figure 19 Receive tolerance eye mask Absolute amplitude in V Z1 Z2 0 V ...

Страница 69: ...d Z1OP X1OP and X2OP are the values in table 30 for Z1 X1 and X2 The X1 points in the receive tolerance masks are greater than the X1 points in the receive masks due to the addition of sinusoidal jitter Figure 20 defines the sinusoidal jitter mask Figure 20 Sinusoidal jitter mask Z1TOL Z1OPx X2OP 0 5 xadditional sinusoidal jitter X1OP X2OP X1OP FNOM 25 000 FNOM 1 667 Sinusoidal jitter frequency lo...

Страница 70: ...the transition with a repeating 0101b pattern on the physical link The same stable trigger coherent to the data stream shall be used for both the Tx and Tx signals Skew is defined as the time difference between the means of the midpoint crossing times of the Tx signal and the Tx signal c The transmitter off voltage is the maximum A C voltage measured at compliance points when the transmitter is un...

Страница 71: ... The same stable trigger coherent to the data stream shall be used for both the Rx and Rx signals Skew is defined as the time difference between the means of the midpoint crossing times of the Rx signal and the Rx signal e Near end crosstalk is the unwanted signal amplitude at receiver terminals DR CR and XR coupled from signals and noise sources other than the desired signal Refer to SFF 8410 Tab...

Страница 72: ...weep c Sinusoidal swept frequency 900 kHz to 5 MHz d Sinusoidal swept frequency 1 800 kHz to 5 MHz e No value is given for random jitter For compliance with this standard the actual random jitter amplitude shall be the value that brings total jitter to the stated value at a probability of 10 12 The additional 0 1 UI of sinusoidal jitter is added to ensure the receiver has sufficient operating marg...

Страница 73: ...measurement applies only to the mated connector pair at each end as applicable d Where the media has an electrical length of 4 ns the procedure detailed in SFF 8410 or an equivalent procedure shall be used to determine the impedance e The receiver termination impedance specification applies to all receivers in a TxRx connection and covers all time points between the connector nearest the receiver ...

Страница 74: ... for 3 0 GHz f 5 0 GHz where f is the signal frequency in hertz The TCTF is used to specify the requirements on transmitters that may or may not incorporate pre emphasis or other forms of compensation A compliance interconnect is any physical interconnect with loss equal to or greater than that of the TCTF at the above frequencies that also meets the ISI loss requirements shown in fig ure 23 and f...

Страница 75: ... Gbps Figure 24 ISI loss example at 1 5 Gbps Tx Tx 10 nF 50 ohm 50 ohm Probe points SASinternal connector 10 nF ISI loss 3 9 dB 10 9 dB Frequency GHz Sample compliance interconnect 0 3 0 1 5 0 3 S21 dB Compliance interconnect magnitude response and ISI loss example for 3 0 Gbps ISI loss 2 0 dB Frequency GHz Sample compliance interconnect 0 1 5 0 75 0 15 S21 dB Compliance interconnect magnitude res...

Страница 76: ...ER objective when the signal at a receiving phy has the addi tional sinusoidal jitter present that is specified in table 32 and the common mode signal VCM over frequency range FCM as specified in table 28 The jitter tolerance is shown in Figure 20 for all Rx compliance points in a TxRx connection The figure given assumes that any external interference occurs prior to the point at which the test is...

Страница 77: ...hing write data 12 Canadian Department of Communications 3 capacity unformatted 9 check condition status 57 chemical pollutants 37 class B limit 3 clear ACA function 46 clear task set function 46 commands supported 48 condensation 33 condition met good status 57 connector illustrated 60 requirements 60 continuous vibration 36 cooling 43 corrosive environment 37 CRC error 14 Current profiles 24 cus...

Страница 78: ...ts errors 39 internal drive characteristics 9 IRAW 42 J jumpers 43 L latency average rotational 9 10 logical block address 11 logical block reallocation scheme 7 logical block size 7 10 logical segments 11 M maintenance 13 maximum delayed motor start 20 21 22 23 maximum start current 20 21 22 23 media description 7 Media Pre Scan 41 miscellaneous feature support Adaptive caching 57 Asynchronous ev...

Страница 79: ...g 35 Recoverable Errors 13 recovered media data 13 reference documents 5 relative humidity 33 reliability 8 specifications 13 reliability and service 14 repair and return information 19 reporting actual retry count 57 reservation conflict status 57 resonance 34 return information 19 rotation speed 9 S safety 3 SAS interface 61 physical interface 57 task management functions 46 SAS documents 5 SAS ...

Страница 80: ...supported 05 46 Function reject 04 46 task set full status 57 technical support services 1 temperature 33 43 limits 33 non operating 33 regulation 3 See also cooling terminate task function 46 terminators 43 tracks per inch 9 transmitters 62 transporting the drive 19 U unformatted 8 Unrecoverable Errors 13 unrecovered media data 13 V vibration 34 36 W warranty 19 Z zero latency read 57 zone bit re...

Страница 81: ......

Страница 82: ...United States 408 658 1000 ASIA PACIFIC Seagate Singapore International Headquarters Pte Ltd 7000 Ang Mo Kio Avenue 5 Singapore 569877 65 6485 3888 EUROPE MIDDLE EAST AND AFRICA Seagate Technology SAS 16 18 rue du Dôme 92100 Boulogne Billancourt France 33 1 4186 10 00 Publication Number 100466193 Rev C July 2011 ...

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Содержание Cheetah ST3146356SS

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Seagate Cheetah ST3146356SS, Руководство по эксплуатации продукта

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Содержание Cheetah ST3146356SS

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