Seagate Cheetah T10 SAS ST3146755SS, Product Manual

Page 1: ...Cheetah T10 SAS ST3300555SS ST3146755SS ST373355SS ...

Page 2: ...LLC SeaTools SeaFONE SeaBOARD and SeaTDD are either registered trade marks or trademarks of Seagate Technology LLC Other product names are registered trade marks or trademarks of their owners Seagate reserves the right to change without notice product offerings or specifications No part of this publication may be reproduced in any form without written permission of Seagate Technol ogy LLC ...

Page 3: ... execution time minutes 12 4 2 3 General performance characteristics 12 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 14 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 16 5 1 4 Interface errors 16 5 2 Reliability and se...

Page 4: ...Read After Write 40 8 0 Installation 41 8 1 Drive orientation 41 8 2 Cooling 42 8 3 Drive mounting 43 8 4 Grounding 43 9 0 Interface requirements 45 9 1 SAS features 45 9 1 1 task management functions 45 9 1 2 task management responses 45 9 2 Dual port support 46 9 3 SCSI commands supported 47 9 3 1 Inquiry data 51 9 3 2 Mode Sense data 51 9 4 Miscellaneous operating features and conditions 56 9 4...

Page 5: ...tions per second 30 Figure 9 ST373355SS 3 Gbit DC current and power vs input output operations per second 31 Figure 10 ST373355SS 1 5 Gbit DC current and power vs input output operations per second 31 Figure 11 Location of the HDA temperature check point 32 Figure 12 Recommended mounting 34 Figure 13 Physical dimensions 36 Figure 14 Physical interface 41 Figure 15 Air flow 42 Figure 16 Physical in...

Page 6: ...2 Cheetah T10 SAS Product Manual Rev A ...

Page 7: ...h SAS Serial Attached SCSI disc 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 T10 and other Seagate SAS drives Figure 1 Cheetah T10 SAS disc drive ...

Page 8: ...2 Cheetah T10 SAS Product Manual Rev A ...

Page 9: ...osure 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 limi...

Page 10: ...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 a...

Page 11: ...rial 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 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 Seaga...

Page 12: ...6 Cheetah T10 SAS Product Manual Rev A ...

Page 13: ... This allows you to continue to leverage your existing investment in SCSI while gaining a 3Gb s serial data transfer rate The head and disc 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 actua...

Page 14: ...ction length of 320 bits No preventive maintenance or adjustments required Dedicated head landing zone Embedded servo design Automatic shipping lock Embedded servo design 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 BG...

Page 15: ...lits over servo bursts This added capacity potential may range from 0 1 to 1 3 percent above the 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...

Page 16: ...ackaging to provide maximum protection against transit damage Units shipped individually require additional protection as provided by the single unit shipping pack Users planning single unit distribution should specify this option The Cheetah T10 SAS Installation Guide part number 100433695 is usually included with each standard OEM drive shipped but extra copies may be ordered The Safety and Regu...

Page 17: ...07 960 to 1607 Mbits sec variable with zone Disc 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 Rounded off value 4 2 Seek time See Section 9 4 1 SAS physical interface on page 57 and the SAS Interface Manual part number 100...

Page 18: ...mmand with the START bit equal to 1 the drive waits for a NOTIFY ENABLE SPINUP primitive After receiving a NOTIFY ENABLE SPINUP primitive through either port the drive becomes ready for normal operations within 20 seconds excluding the error recovery procedure If the drive receives a START STOP UNIT command with the START bit and IMMED bit equal to 1 and does not receive a NOTIFY ENABLE SPINUP pri...

Page 19: ...as circular buffer segments during disc medium read operations disregarding Prefetch operation for the moment That is the drive does not check in the buffer segments for the requested read data but goes directly to the medium to retrieve it The retrieved data merely passes through some buffer segment on the way to the host All data transfers to the host are in accordance with buffer full ratio rul...

Page 20: ...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 already been returned a deferred 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 re...

Page 21: ...ll use correction although ECC on the fly is not considered for purposes of recov ered error specifications Recovered Data error rate is determined using read bits transferred for recoverable errors occurring during a read and using write bits transferred for recoverable errors occurring during a write 5 1 2 Unrecoverable Errors Unrecoverable Data Errors Sense Key 03h are specified at less than 1 ...

Page 22: ...eve a MTBF of 1 400 000 hours when operated in an environment that ensures the HDA case temperatures specified in Section 6 4 are not exceeded Short term excursions up to the specification limits of the operating environment will not affect MTBF performance Continual or sustained operation at case temperatures above the values shown in Section 6 4 1 may degrade product reliability The MTBF target ...

Page 23: ...ures Each monitored attribute has been selected to monitor a specific set of failure conditions in the operating per formance of the drive and the thresholds are optimized to minimize false and failed predictions Controlling S M A R T The operating mode of S M A R T is controlled by the DEXCPT and PERF bits on the Informational Exceptions Control mode page 1Ch Use the DEXCPT bit to enable or disab...

Page 24: ...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...

Page 25: ...uring either of these tests it reports a fault condition If the drive fails the test remove it from service and return it to Seagate for service 5 2 6 1 DST failure definition The drive will present a diagnostic failed condition through the self tests 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...

Page 26: ...the short test is to provide a time limited test that tests as much of the drive as possible within 120 seconds The short test does not scan the entire media surface but does some fundamental tests and scans portions of the media A complete read verify scan is not performed and only factual failures will report a fault condition This option provides a quick confidence test of the drive Extended te...

Page 27: ...s and subassemblies that fails to function properly under normal use due to defect in materials or workmanship or due to nonconformance to the applica ble specifications will be repaired or replaced at Seagate s option and at no charge to the customer if returned by customer at customer s expense to Seagate s designated facility in accordance with Seagate s warranty procedure Seagate will pay for ...

Page 28: ...22 Cheetah T10 SAS Product Manual Rev A ...

Page 29: ...or 0 15A DC and 0 2A AC 12V max start current margin added Table 2 ST3300555SS DC power requirements Notes ST3300555SS 1 5 Gbit mode ST3300555SS 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 6 0 79 0 85 0 78 0 86 Maximum starting current peak DC DC 3σ 3 0 90 1 98 0 89 1 97 peak AC AC 3σ 3 1 19 3 32 1 21 3 28 Delayed motor start max DC 3σ ...

Page 30: ...starting current peak DC DC 3σ 3 0 87 2 12 0 87 1 93 peak AC AC 3σ 3 1 20 3 49 1 21 3 45 Delayed motor start max DC 3σ 1 4 0 64 0 03 0 68 0 03 Peak operating current Typical DCX 1 0 78 0 76 0 81 0 76 Maximum DC 3σ 1 0 78 0 78 0 82 0 78 Maximum peak DC 3σ 1 60 2 54 1 62 2 62 Table 4 ST373355SS DC power requirements Notes ST373355SS 1 5 Gbit mode ST373355SS 3 Gbit mode Amps Amps Amps Amps Voltage 5V...

Page 31: ...erating current shown 2 The 5V and 12V supplies should employ separate ground returns 3 Where power is provided to multiple drives from a common supply careful consideration for individual drive power requirements should be noted Where multiple units are powered on simultaneously the peak starting current must be available to each device 4 Parameters other than spindle start are measured after a 1...

Page 32: ...26 Cheetah T10 SAS Product Manual Rev A Figure 2 Typical ST3300555SS drive current profiles ...

Page 33: ...Cheetah T10 SAS Product Manual Rev A 27 Figure 3 Typical ST3146755SS drive current profiles ...

Page 34: ...28 Cheetah T10 SAS Product Manual Rev A Figure 4 Typical ST373355SS drive current profiles ...

Page 35: ... obtain operating power for typical random read operations refer to the following I O rate curve see Figure 5 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 ST3300555SS 1 5 Gbit DC current and power vs input outpu...

Page 36: ... To obtain operating power for typical random read operations refer to the following I O rate curve see Figure 5 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 ST3146755SS 1 5 Gbit DC current and power vs input ou...

Page 37: ... obtain operating power for typical random read operations refer to the following I O rate curve see Figure 5 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 10 ST373355SS 1 5 Gbit DC current and power vs input outpu...

Page 38: ... 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 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 specificat...

Page 39: ...r normal operation shall operate error free while subjected to intermittent shock not exceeding 60 Gs at a maximum duration of 2 msec half sinewave Shock may be applied in the X Y or Z axis 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 maximum duration of 11 msec half sinewave Shock oc...

Page 40: ...aged in single or multipacks with a gross weight of 20 pounds 8 95 kg or less by Seagate for general freight shipment shall withstand a drop test from 48 inches 1 070 mm against a concrete floor or equivalent Figure 12 Recommended mounting Package 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 180...

Page 41: ... to peak 22 500 Hz 2 00 G zero to peak Vibration may be applied in the X Y or Z axis Non operating translational random flat profile 10 500 Hz 1 2 gRMS 6 4 5 Air cleanliness The drive is designed to operate in a typical office environment with minimal environmental control 6 4 6 Corrosive environment Seagate electronic drive components pass accelerated corrosion testing equivalent to 10 years expo...

Page 42: ...cifications Refer to Figure 13 for detailed physical dimensions See Section 8 3 Drive mounting Figure 13 Physical dimensions Height 1 028 in 26 11 mm Width 4 010 in 101 85 mm Depth 5 787 in 146 99 mm Weight 1 85 pounds 0 839 kilograms 26 11 MAX 1 028 MAX 2X 20 14 2X 793 6 35 250 24 00 945 2X 28 45 2X 1 120 2X 70 05 2X 2 758 122 00 4 803 2X 130 05 2X 5 120 0 36 014 146 99 MAX 5 787 MAX 131 17 5 164...

Page 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 dr...

Page 44: ...he unrecov 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 ...

Page 45: ... 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 com...

Page 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 7 7 Idle Read After Write Idle Read After Write IRAW utilizes...

Page 47: ...he 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 informat...

Page 48: ...he least amount of air flow resistance is created while providing air flow to the electronics and HDA Also the shortest possible path between the air inlet and exit should be chosen to minimize the travel length of air heated by the drive and other heat sources within the rack cabinet or drawer environment If forced air is determined to be necessary possible air flow patterns are shown in Figure 1...

Page 49: ...our 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 8 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 mounts...

Page 50: ...44 Cheetah T10 SAS Product Manual Rev A ...

Page 51: ...nt functions Table 6 lists the SAS task management functions supported 9 1 2 task management responses Table 7 lists the SAS response codes returned for task management functions supported Table 6 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 7 Task management response codes...

Page 52: ...eed 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 drive ...

Page 53: ...ported 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 4Dh Y ...

Page 54: ...Reconnect 02h Y Error Recovery page 01h Y Format page 03h Y Information Exceptions Control page 1Ch Y Background Medium Scan mode subpage 01h Y Notch and Partition Page 0Ch N Protocol Specific Port page 19h Y Power Condition page 1Ah Y Rigid Disc 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 5A...

Page 55: ... 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...

Page 56: ...ually 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 8 Commands supported by Cheetah T10 SAS family drives continued Command name Command code Support...

Page 57: ...irmware 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 initiator can request and receive from the drive a list of default values and use those in a Mode Select command to set up new current and saved values where the values are change able 2 Saved values Saved values are st...

Page 58: ... can be changed A zero 0 indicates the value is not changeable For example in Table 10 refer to Mode page 81 in the row entitled CHG These are hex numbers representing the changeable 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 t...

Page 59: ...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 0f 0c 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 00 07 d0 00 00 CHG 99 06 10 00 ff ff ff ff DEF 9a 0a ...

Page 60: ...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 07 95 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 00 07 d0 00 00 CHG 99 06 10 00 ff ff ff ff DEF 9a 0a ...

Page 61: ...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 03 ed 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 0...

Page 62: ...n 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 Select command needed to save RPL and rotational offset bytes Table 14 Misce...

Page 63: ...ce connector J1 Figures 17 and 18 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 Figure 16 Physical interface J6 SAS Interface connector ...

Page 64: ...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 ...

Page 65: ...d in a future revision of this publication when production parts are available from major connec tor manufacturers The SAS device connector is illustrated in Figures 17 and 18 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 ...

Page 66: ...lugging NC No connection in the drive Pin Signal name Signal type 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 in...

Page 67: ...urn current 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 15 for signal type and signal name information 9 5 1 Read...

Page 68: ...cs 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 17 LED drive signal State Test condition Output voltage LED off...

Page 69: ...lk are taken into account 9 5 2 1 3 Jitter tolerance masks Figure 21 describes the receive tolerance eye masks and is constructed using the X2 and Z2 values given in table 21 X1OP is half the value for total jitter intable 21 and X1TOL is half the value for total jitter in table 22 for jitter frequencies above bit rate 1 667 Figure 21 Reveive tolerance eye mask Absolute amplitude in V Z1 Z2 0 V Z1...

Page 70: ... Z1OP X1OP and X2OP are the values in table 20 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 22 defines the sinusoidal jitter mask Figure 22 Sinusoidal jitter mask Z1TOL Z1OPx X2OP 0 5 xadditional sinusoidal jitter X1OP X2OP X1OP FNOM 25 000 FNOM 1 667 Sinusoidal jitter frequency log...

Page 71: ...he 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 unp...

Page 72: ...he 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 Table...

Page 73: ...p 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 margin ...

Page 74: ...asurement 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 th...

Page 75: ... 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 25 and figure 26 Compliance with the TCTF tes...

Page 76: ... 5 Gbps Figure 26 ISI loss example at 1 5 Gbps Tx Tx 10 nF 50 ohm 50 ohm Probe points SASinternal connector 10 nF ISIloss 3 9 dB 10 9dB Frequency GHz Sam plecom plianceinterconnect 0 3 0 1 5 0 3 S21 dB Com plianceinterconnect m agnituderesponseand ISIloss exam ple for 3 0Gbps ISIloss 2 0 dB Frequency GHz Sample compliance interconnect 0 1 5 0 75 0 15 S21 dB Compliance interconnect magnitude respon...

Page 77: ... objective when the signal at a receiving phy has the addi tional sinusoidal jitter present that is specified in table 22 and the common mode signal VCM over frequency range FCM as specified in table 18 The jitter tolerance is shown in Figure 22 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 a...

Page 78: ...72 Cheetah T10 SAS Product Manual Rev A ...

Page 79: ... and other channel related information To learn more about the ben efits or to register go to spp seagate com any time from anywhere in the world Seagate Service Centers Presales Support Our Presales Support staff can help you determine which Seagate products are best suited for your specific application or computer system as well as product availability and compatibility Technical Support Seagate...

Page 80: ...1 405 324 4704 Technical Support Call center Toll free Direct dial FAX Americas 1 800 SEAGATE2 1 405 324 47002 1 405 324 3339 Customer Service Operations Warranty Service Call center Toll free Direct dial FAX E mail USA Canada Mexico and 1 800 468 34723 1 956 664 4725 Latin America Brazil Jabil Industrial Do Brasil 55 11 4191 4761 55 11 4191 5084 LTDA4 SeagateRMA br jabil com Data Recovery Service...

Page 81: ...rough Friday The CSO warranty center is located in Amsterdam The Netherlands Seagate Service Centers Toll free support numbers Call center Presales and Technical Support Warranty Service Austria 00 800 47324289 Belgium 00 800 47324283 00 800 4SEAGATE 00 800 47324289 Denmark 00 800 47324283 00 800 47324289 France 00 800 47324283 00 800 47324289 Germany 00 800 47324283 00 800 47324289 Ireland 00 800...

Page 82: ... one of our tech nical support locations Warranty service is available from 9 00 A M to 5 00 P M Monday through Friday Warranty service for Australia is available from 10 00 A M to 7 00 P M April through October and from 11 00 A M to 8 00 P M November through March Australian Eastern time Monday through Friday Seagate Service Centers Call center Toll free Direct dial FAX Australia 1800 14 7201 Chi...

Page 83: ...a 14 Canadian Department of Communications 3 capacity unformatted 11 check condition status 56 chemical pollutants 35 class B limit 3 clear ACA function 45 clear task set function 45 commands supported 47 condensation 33 condition met good status 56 connector illustrated 59 requirements 59 continuous vibration 35 cooling 42 corrosive environment 35 CRC error 16 Current profiles 25 customer service...

Page 84: ...s 56 intermediate good status 56 internal data rate 11 internal defects errors 37 internal drive characteristics 11 IRAW 40 J jumpers 41 L latency average rotational 11 12 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 39 miscel...

Page 85: ...ulations 3 RCD bit 13 read error rates 15 37 read write data heads 11 receivers 61 recommended mounting 34 Recoverable Errors 15 recovered media data 15 reference documents 5 relative humidity 33 reliability 9 specifications 15 reliability and service 16 repair and return information 21 reporting actual retry count 56 reservation conflict status 56 resonance 33 return information 21 rotation speed...

Page 86: ...odes 45 Function complete 00 45 Function not supported 05 45 Function reject 04 45 task set full status 56 technical support services 73 temperature 32 42 limits 32 non operating 32 regulation 3 See also cooling terminate task function 45 terminators 41 tracks per inch 11 tracks per surface 11 transmitters 61 transporting the drive 21 U unformatted 9 Unrecoverable Errors 15 unrecovered media data ...

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Page 88: ...Seagate Technology LLC 920 Disc Drive Scotts Valley California 95066 4544 USA Publication Number 100433694 Rev A Printed in USA ...