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Cheetah NS 10K.2 SAS Product Manual, Rev. B

7

3.0

General description

Cheetah

®

NS 10K.2 SAS drives provide high performance, high capacity data storage for a variety of systems

including engineering workstations, network servers, mainframes, and supercomputers. The Serial Attached
SCSI interface is designed to meet next-generation computing demands for performance, scalability, flexibility
and high-density storage requirements.

Cheetah drives are random access storage devices designed to support the Serial Attached SCSI Protocol as
described in the ANSI specifications, this document, and the

SAS Interface Manual

(part number 100293071)

which describes the general interface characteristics of this drive. Cheetah drives are classified as intelligent
peripherals and provide level 2 conformance (highest level) with the ANSI SCSI-1 standard. The SAS connec-
tors, cables and electrical interface are compatible with Serial ATA (SATA), giving future users the choice of
populating their systems with either SAS or SATA hard disk drives. This allows you to continue to leverage your
existing investment in SCSI while gaining a 3Gb/s serial data transfer rate.

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

Note.

Never disassemble the HDA and do not attempt to service items in the sealed enclosure (heads,
media, actuator, etc.) as this requires special facilities. The drive does not contain user-replaceable
parts. Opening the HDA for any reason voids your warranty.

Cheetah drives use a dedicated landing zone at the innermost radius of the media to eliminate the possibility of
destroying or degrading data by landing in the data zone. The heads automatically go to the landing zone when
power is removed from the drive.

An automatic shipping lock prevents potential damage to the heads and disks that results from movement dur-
ing shipping and handling. The shipping lock disengages and the head load process begins when power is
applied to the drive.

The drives also use a high-performance actuator assembly with a low-inertia, balanced, patented, straight arm
design that provides excellent performance with minimal power dissipation.

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Содержание CHEETAH NS 10K.2 ST3450802SS

Страница 1: ...Product Manual Cheetah NS 10K 2 SAS 100516228 Rev B July 2009 ST3600002SS ST3450802SS ...

Страница 2: ...mpanies in the United States and or other countries All other trademarks or registered trademarks are the property of their respective owners When referring to drive capacity one gigabyte or GB equals one billion bytes and one mega byte or MB equals one million bytes Your computer s operating system may use a different standard of measurement and report a lower capacity In addition some of the lis...

Страница 3: ...2 4 3 Start stop time 12 4 4 Prefetch multi segmented cache control 13 4 5 Cache operation 13 4 5 1 Caching write data 13 4 5 2 Prefetch operation 14 5 0 Reliability specifications 15 5 1 Error rates 15 5 1 1 Recoverable Errors 15 5 1 2 Unrecoverable Errors 15 5 1 3 Seek errors 15 5 1 4 Interface errors 16 5 2 Reliability and service 16 5 2 1 Annualized Failure Rate AFR and Mean Time Between Failu...

Страница 4: ...5 Media Pre Scan 37 7 6 Deferred Auto Reallocation 37 7 7 Idle Read After Write 38 8 0 Installation 39 8 1 Drive orientation 39 8 2 Cooling 40 8 3 Drive mounting 41 8 4 Grounding 41 9 0 Interface requirements 43 9 1 SAS features 43 9 1 1 task management functions 43 9 1 2 task management responses 43 9 2 Dual port support 44 9 3 SCSI commands supported 45 9 3 1 Inquiry data 49 9 3 2 Mode Sense dat...

Страница 5: ... LLC Cheetah NS 10K 2 SAS Serial Attached SCSI disk drives Cheetah drives support the SAS Protocol specifications to the extent described in this manual The SAS Inter face Manual part number 100293071 describes the general SAS characteristics of Cheetah NS 10K 2 SAS and other Seagate SAS drives ...

Страница 6: ...2 Cheetah NS 10K 2 SAS Product Manual Rev B ...

Страница 7: ...nclosure 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 serve to minimize radiation when installed in an enclosure that provides reasonable shielding The drive is capable of meeting the Class B l...

Страница 8: ...n requirements of the Electromagnetic Compatibility 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...

Страница 9: ...d 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 SCSI Block Commands 2 SBC 2 Standard T10 1417 D ANSI Small Computer System Interface SCSI Documents X3 270 1996 SCSI 3 Architecture Model Specification for Acoustic Test Requirement and Procedures Seagate part number 30553 001 Packa...

Страница 10: ...6 Cheetah NS 10K 2 SAS Product Manual Rev B ...

Страница 11: ...rives This allows you to continue to leverage your existing investment in SCSI while gaining a 3Gb s serial data transfer rate The head and disk assembly HDA is sealed at the factory Air recirculates within the HDA through a non replaceable filter to maintain a contamination free HDA environment Note Never disassemble the HDA and do not attempt to service items in the sealed enclosure heads media ...

Страница 12: ...ng lock Self diagnostics performed when power is applied to the drive Zone bit recording ZBR Vertical horizontal or top down mounting Dynamic spindle brake 16 Mbyte data buffer see Section 4 5 Drive Self Test DST Background Media Scan BGMS Power Save 3 2 Media description The media used on the drive has an aluminum substrate coated with a thin film magnetic material overcoated with a proprietary p...

Страница 13: ...he guaranteed capacities listed above Using the drives in this manner gives the absolute maximum capacity potential but the user must determine if the extra capacity potential is useful or whether their assurance of backward and for ward compatibility takes precedence 3 6 Programmable drive capacity Using the Mode Select command the drive can change its capacity to something less than maximum See ...

Страница 14: ...10 Cheetah NS 10K 2 SAS Product Manual Rev B ...

Страница 15: ...isk rotation speed 10k 10k rpm Avg rotational latency 2 98 2 98 msec One Gbyte equals one billion bytes when referring to hard drive capacity Accessible capacity may vary depending on operating environment and formatting 4 2 Seek performance See Section 9 4 1 SAS physical interface on page 54 and the SAS Interface Manual part number 100293071 for additional timing details 4 2 1 Access time Not Inc...

Страница 16: ...t stop time The drive accepts the commands listed in the SAS Interface Manual less than 3 seconds after DC power has been applied If the drive receives a NOTIFY ENABLE SPINUP primitive through either port and has not received a START STOP UNIT command with the START bit equal to 0 the drive becomes ready for normal operations within 30 seconds excluding the error recovery procedure If the drive re...

Страница 17: ... the way to the host All data transfers to the host are in accordance with buffer full ratio rules See the explanation provided with the information about Mode Page 02h disconnect reconnect control in the SAS Interface Manual The following is a simplified description of the prefetch cache operation Case A read command is received and all of the requested logical blocks are already in the cache 1 D...

Страница 18: ...d error will be gen erated The Synchronize Cache command may be used to force the drive to write all cached write data to the medium Upon completion of a Synchronize Cache command all data received from previous write commands will have been written to the medium Table 9 3 2 1 shows the mode default settings for the drive 4 5 2 Prefetch operation If the Prefetch feature is enabled data in contiguo...

Страница 19: ...mined using read bits transferred for recoverable errors occurring during a read and using write bits transferred for recoverable errors occurring during a write 5 1 2 Unrecoverable Errors Unrecoverable Data Errors Sense Key 03h are specified at less than 1 sector in error per 1016 bits trans ferred Unrecoverable Data Errors resulting from the same cause are treated as 1 error for that block 5 1 3...

Страница 20: ...t to individual units AFR and MTBF specifications are based on the following assumptions for Enterprise Storage System environments 8 760 power on hours per year 250 average on off cycles per year Operating at nominal voltages System provides adequate cooling to ensure the case temperatures specified in Section 6 4 1 are not exceeded 5 2 2 Preventive maintenance No routine scheduled preventive mai...

Страница 21: ...when S M A R T interruptions occur Forcing S M A R T with the RTZ command resets the timer Performance impact S M A R T attribute data is saved to the disk so that the events that caused a predictive failure can be recre ated The drive measures and saves parameters once every two hours subject to an idle period on the drive interfaces The process of measuring off line attribute data and saving dat...

Страница 22: ...ute intervals after power up The thermal monitor system generates a warning code of 01 0B01 when the temperature exceeds the speci fied limit in compliance with the SCSI standard The drive temperature is reported in the FRU code field of mode sense data You can use this information to determine if the warning is due to the temperature exceeding the drive threatening temperature or the user specifi...

Страница 23: ...tries are exhausted Write error after retries are exhausted Recovered errors will not be reported as diagnostic failures 5 2 7 2 Implementation This section provides all of the information necessary to implement the DST function on this drive 5 2 7 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 ...

Страница 24: ...in the DST command 2 The Self Test Results Value field is set to Fh 3 The drive will store the log page to non volatile memory After a self test is complete or has been aborted the drive updates the Self Test Results 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 t...

Страница 25: ...ntainer Keep your original box Sea gate approved containers are easily identified by the Seagate Approved Package label Shipping a drive in a non approved container voids the drive warranty Seagate repair centers may refuse receipt of components improperly packaged or obviously damaged in tran sit Contact your authorized Seagate distributor to purchase additional boxes Seagate recommends shipping ...

Страница 26: ...22 Cheetah NS 10K 2 SAS Product Manual Rev B ...

Страница 27: ...5 before reaching 10 000 RPM The 5 must be maintained after the drive signifies that its power up sequence has been completed and that the drive is able to accept selection by the host initiator 3 See 12V current profile in Figure 1 4 This condition occurs after OOB and Speed Negotiation completes but before the drive has received the Notify Spinup primitive Table 12 ST3600002SS DC power requireme...

Страница 28: ... 10 000 RPM The 5 must be maintained after the drive signifies that its power up sequence has been completed and that the drive is able to accept selection by the host initiator 3 See 12V current profile in Figure 1 4 This condition occurs after OOB and Speed Negotiation completes but before the drive has received the Notify Spinup primitive 5 See paragraph 6 2 1 Conducted noise immunity Specified...

Страница 29: ...e drive power connector 6 2 2 Power sequencing The drive does not require power sequencing The drive protects against inadvertent writing during power up and down 6 2 3 Current profiles The 12V and 5V current profiles are shown below in figure 1 Note All times and currents are typical See Table 12 for maximum current requirements 5V 250 mV pp from 0 to 100 kHz to 20 MHz 12V 800 mV pp from 100 Hz t...

Страница 30: ...26 Cheetah NS 10K 2 SAS Product Manual Rev B Figure 1 Typical ST3600002SS drive 5V and 12V current profiles Figure 2 Typical ST3450802SS drive 5V and 12V current profiles ...

Страница 31: ...alculate BTUs per hour multiply watts by 3 4123 Figure 3 ST3600002SS 3 Gbit DC current and power vs input output operations per second ST3450802SS Typical power dissipation under idle conditions in 3Gb operation is 5 74 watts 19 59 BTUs per hour To obtain operating power for typical random read operations refer to the following I O rate curve see Figure 3 Locate the typical I O rate for a drive in...

Страница 32: ...e AFR Provided the HDA case temperatures limits are met 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 86 F 30 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 m...

Страница 33: ... operation shall operate error free while subjected to intermittent shock not exceeding 15 Gs at a duration of 11 msec half sinewave 20 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 nor...

Страница 34: ...size 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...

Страница 35: ... peak linear swept sine 0 5 octave min Vibration may be applied in the X Y or Z axis 6 4 5 Acoustics Sound power during idle mode shall be 3 4 bels typical when measured to ISO 7779 specification Sound power while operating shall be 3 6 bels typical when measured to ISO 7779 specification There will not be any discrete tones more than 10 dB above the masking noise on typical drives when mea sured ...

Страница 36: ...mical substances including Lead Cadmium Mercury Hexavalent Chromium PBB and PBDE in electronic products effective July 2006 This drive is manufactured with components and materials that comply with the RoHS Directive 6 4 9 China Restriction of Hazardous Substances RoHS Directive This product has an Environmental Protection Use Period EPUP of 20 years The following table contains information mandat...

Страница 37: ...5 Mechanical specifications Refer to Figure 7 for detailed physical dimensions See Section 8 3 Drive mounting Figure 7 Physical dimensions Height 1 013 in 25 73 mm Width 3 999 in 101 57 mm Depth 5 769 in 146 53 mm Weight 1 482 pounds 0 672 kilograms ...

Страница 38: ...34 Cheetah NS 10K 2 SAS Product Manual Rev B ...

Страница 39: ... 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 drive Error Recovery philosophy is presented in the SAS Interface Manual 7 2 Drive error recovery procedures Wh...

Страница 40: ...sult 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 442 89 msec recovery time for each of the four LBAs in the command If the recovery time limit is set to 00 C8 ...

Страница 41: ...dle 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 complete any BMS initiated error recovery prior to returning to service host initiated commands Overhead associated with a ...

Страница 42: ... 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 7 7 Idle Read After Write Idle Read After Write IRAW utilizes idle time to verify the integrity of recently written data During idle periods no active system requests the drive reads...

Страница 43: ... the drive using high quality cables is acceptable as long as the I O cable length does not exceed 4 meters 13 1 feet Slide the carrier or tray into the appropriate bay in your host system using the instructions provided by the host system This connects the drive directly to your system s SAS connector The SAS connector is normally located on a SAS backpanel See Section 9 4 1 for additional inform...

Страница 44: ...ified in Section 6 4 1 If forced air is necessary possible air flow patterns are shown in Figure 9 The air flow patterns are created by fans either forcing or drawing air as shown in the illustrations Conduction convection or other forced air flow patterns are acceptable as long as the temperature measurement guidelines of Section 6 4 1 are met Figure 9 Air flow Above unit Under unit Note Air flow...

Страница 45: ...ch to 5 25 inch adapter frame verify with Seagate Technology that the drive can meet the shock and vibration specifications given herein while mounted in such an adapter frame Adapter frames that are available may not have a mechanical structure capable of mounting the drive so that it can meet the shock and vibration specifications listed in this manual 8 4 Grounding Signal ground PCBA and HDA gr...

Страница 46: ...42 Cheetah NS 10K 2 SAS Product Manual Rev B ...

Страница 47: ...anagement functions Table 15 lists the SAS task management functions supported 9 1 2 task management responses Table 16 lists the SAS response codes returned for task management functions supported Table 15 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 16 Task management res...

Страница 48: ...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 drives support Concurrent port transfers The driv...

Страница 49: ...it 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 50: ...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 51: ... 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 52: ...sually 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 17 Commands supported by Cheetah NS 10K 2 SAS family drives continued Command name Command code ...

Страница 53: ...The Mode Sense command provides a way for the drive to report its operating parameters to the initiator The drive maintains four sets of mode parameters 1 Default values Default values are hard coded in the drive firmware stored in flash E PROM nonvolatile memory on the drive s PCB These default values can be changed only by downloading a complete set of new firmware into the flash E PROM An initi...

Страница 54: ...ngeable values for Mode page 81 Note in columns 5 and 6 bytes 04 and 05 there is 00h which indicates that in bytes 04 and 05 none of the bits are changeable Note also that bytes 06 07 09 10 and 11 are not changeable because those fields are all zeros In byte 02 hex value FF equates to the binary pattern 11111111 If there is a zero in any bit position in the field it means that bit is not changeabl...

Страница 55: ...0 00 00 00 00 00 00 00 00 00 27 31 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 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 19 00 CHG 8A 0A 03 F0 00 00 00 00 00 00 0...

Страница 56: ...0 00 00 00 00 00 00 00 00 00 27 31 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 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 12 C0 CHG 8A 0A 03 F0 00 00 00 00 00 00 0...

Страница 57: ...ion N Synchronized locked spindle operation Y Segmented caching N Zero latency read Y Queue tagging up to 128 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 Select command needed to save RPL and rotational offset bytes Table 20 Mi...

Страница 58: ...igures 11 and 12 provide the dimensions of the SAS device 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 The SAS connector complies with SFF 8482 Figure 10 Physical interface SAS Interface connector ...

Страница 59: ...8 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 60: ...acturer for mating part information The SAS device connector is illustrated in Figures 11 and 12 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 DATUM A 0 03 65 30 1 90 0 08 S...

Страница 61: ...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 62: ...t 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 9 5 Signal characteristics This section describes the electrical signal characteristics of the drive s input and output signals See Table 21 for signal type and signal name information 9 5 1 Ready LED Out ...

Страница 63: ...tics 9 5 2 1 Eye masks 9 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 23 LED drive signal State Test condition Output voltage LED o...

Страница 64: ...ye mask Verifying compliance with the limits represented by the receive eye mask should be done with reverse channel traffic present in order that the effects of crosstalk are taken into account 9 5 2 1 3 Jitter tolerance masks Figure 15 describes the receive tolerance eye masks and is constructed using the X2 and Z2 values given in table 27 X1OP is half the value for total jitter intable 27 and X...

Страница 65: ... by the following equa tion where Z1TOL is the value for Z1 to be used for the tolerance masks and Z1OP X1OP and X2OP are the values in table 26 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 16 defines the sinusoidal jitter mask Figure 16 Sinusoidal jitter mask Z1TOL Z1OPx X2OP 0 5 x...

Страница 66: ... 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 u...

Страница 67: ...k 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 Ta...

Страница 68: ...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 69: ...oth ends of the media when present but includes any intermediate connectors or splices The mated connectors 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 ...

Страница 70: ...ts 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 19 and figure 20 Compliance with the TCTF test load requirement is verified by measuring the signal produced by th...

Страница 71: ...Figure 18 shows the zero length test load Figure 18 Zero length test load Figure 19 shows an ISI loss example at 3 0 Gbps Figure 19 ISI loss example at 3 0 Gbps Figure 20 shows an ISI loss example at 1 5 Gbps Figure 20 ISI loss example at 1 5 Gbps ...

Страница 72: ...BER objective when the signal at a receiving phy has the addi tional sinusoidal jitter present that is specified in table 28 and the common mode signal VCM over frequency range FCM as specified in table 24 The jitter tolerance is shown in Figure 16 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 i...

Страница 73: ...a single password protected Web interface anytime anywhere in the world spp seagate com spp seagate com supports Seagate resellers with product information program benefits and sales tools You may register for customized communications that are not available on the web These communications contain product launch EOL pricing promotions and other channel related information To learn more about the b...

Страница 74: ...Centers are available on a global basis for the return of defective products See www sea gate com for the service center near you USA Canada Latin America support services For an extensive list of telephone numbers to technical support presales and warranty service in USA Canada Latin America including business hours go to the Contact Us page on www seagate com Global Customer Support Presales Tec...

Страница 75: ...ommunications 3 capacity unformatted 11 check condition status 53 chemical pollutants 31 China RoHS directive 32 class B limit 3 clear ACA function 43 clear task set function 43 commands supported 45 condensation 29 condition met good status 53 connector illustrated 56 requirements 56 continuous vibration 31 cooling 40 corrosive environment 31 CRC error 16 Current profiles 25 customer service 21 D...

Страница 76: ...ternal data rate 11 internal defects errors 35 internal drive characteristics 11 IRAW 38 J jumpers 39 L latency average rotational 11 logical block address 13 logical block reallocation scheme 8 logical block size 8 12 logical segments 13 M maintenance 15 maximum delayed motor start 23 24 maximum start current 23 24 media description 8 Media Pre Scan 37 miscellaneous feature support Adaptive cachi...

Страница 77: ...ded mounting 30 Recoverable Errors 15 recovered media data 15 reference documents 5 relative humidity 29 reliability 8 specifications 15 reliability and service 16 repair and return information 21 reporting actual retry count 53 reservation conflict status 53 resonance 29 return information 21 RoHS 32 rotation speed 11 S safety 3 SAS interface 57 physical interface 54 task management functions 43 ...

Страница 78: ...tion not supported 05 43 Function reject 04 43 task set full status 53 technical support services 69 temperature 28 40 limits 28 non operating 28 regulation 3 See also cooling terminate task function 43 terminators 39 tracks per inch 11 transmitters 58 transporting the drive 21 U unformatted 9 Unrecoverable Errors 15 unrecovered media data 15 V vibration 29 31 W warranty 20 Z zero latency read 53 ...

Страница 79: ......

Страница 80: ...Seagate Technology LLC 920 Disc Drive Scotts Valley California 95066 4544 USA Publication Number 100516228 Rev B Printed in USA ...

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