Physical/electrical specifications | Seagate ST3450856SS guide

6.0Physical/electrical specifications

This section provides information relating to the physical and electrical characteristics of the drive.

6.1AC power requirements

None.

6.2DC power requirements

The voltage and current requirements for a single drive are shown below. Values indicated apply at the drive connector.

Table 2: ST3450856SS DC power requirements

							ST3450856SS		ST3450856SS
							1.5 Gbit mode		3 Gbit mode

						Notes	(Amps)	(Amps)	(Amps)	(Amps)

Voltage							+5V	+12V [2]	+5V	+12V [2]

Regulation						[5]	±5%	±5% [2]	±5%	±5% [2]

						[1] [7]	0.57	0.82	0.59	0.81
Avg idle current DCX						[1] [7]	0.57	0.82	0.59	0.81
Maximum starting current
Maximum starting current
(peak DC) DC					3σ	[3]	0.92	1.95	0.84	1.95
(peak AC) AC					3σ	[3]	1.17	4.58	1.16	4.56
					3σ
Delayed motor start (max) DC					3σ	[1] [4]	0.58	0.03	0.60	0.03
Peak operating current:
Peak operating current:
					[1][6]	[1]	0.62	1.23	0.64	1.22
Typical DCX					[1][6]	[1]	0.62	1.23	0.64	1.22
Maximum DC					3σ	[1]	0.64	1.24	0.65	1.23
Maximum (peak) DC					3σ		1.16	2.76	1.18	2.86

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

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Seagate ST3450856SS, ST3146356SS manual Physical/electrical specifications, AC power requirements, DC power requirements

Contents

ST3450856SS ST3300656SS ST3146356SS Cheetah 15K.6 SASPage Contents Installation Defect and error managementSeagate Technology support services Interface requirements Cheetah 15K.6 SAS disk drive List of Figures Cheetah 15K.6 SAS Product Manual, Rev. a Cheetah 15K.6 SAS disk drive Scope Cheetah 15K.6 SAS Product Manual, Rev. a Standards Standards, compliance and reference documentsElectromagnetic compatibility Electromagnetic susceptibility European Union Restriction of Hazardous Substances RoHS Compliance Reference documents Cheetah 15K.6 SAS Product Manual, Rev. a General description Performance Standard featuresMedia description Options factory installed Factory-installed accessoriesReliability Formatted capacities Cheetah 15K.6 SAS Product Manual, Rev. a Internal drive characteristics Performance characteristicsAccess time Seek time Start/stop time Format command execution time minutesGeneral performance characteristics Cache operation Prefetch/multi-segmented cache control Prefetch operation Caching write data Error rates Reliability specificationsRecoverable Errors Unrecoverable Errors Seek errors Reliability and serviceInterface errors Preventive maintenance Controlling S.M.A.R.T 4 S.M.A.R.TPerformance impact Milliseconds Determining rate Reporting controlPredictive failures Thermal monitor Primary Temperature Temperature Log Page 0DhReference Temperature Parameter Code Description Invoking DST State of the drive prior to testingShort and extended tests Short test Function Code 001b Abort Product warrantyShipping Product repair and return information Cheetah 15K.6 SAS Product Manual, Rev. a AC power requirements Physical/electrical specificationsDC power requirements ST3450856SS DC power requirements ST3146356SS DC power requirements ST3300656SS DC power requirementsST3300656SS Gbit mode Amps ST3146356SS Gbit mode Amps Power sequencing General DC power requirement notesConducted noise immunity Current profiles Typical ST3450856SS current profiles Typical ST3300656SS current profiles Typical ST3146356SS current profiles ST3450856SS in 3 Gbit operation Power dissipation ST3300656SS in 3 Gbit operation ST3300656SS CURRENT/POWER vs Throughput SAS 3.0GB Random 8 Block Reads ST3146356SS CURRENT/POWER vs Throughput SAS 3.0GBST3146356SS in 3 Gbit operation Environmental limits Temperature Effective altitude sea level Relative humidityShock and vibration Shock Recommended mounting Package size Packaged/product weight Drop height Vibration Air cleanlinessAcoustics Corrosive environment Mechanical specifications Physical dimensions Cheetah 15K.6 SAS Product Manual, Rev. a Drive error recovery procedures Defect and error managementDrive internal defects/errors 51.87 Media Pre-Scan SAS system errorsBackground Media Scan Idle Read After Write Deferred Auto-Reallocation Drive orientation Installation Air flow Cooling Grounding Drive mounting Cheetah 15K.6 SAS Product Manual, Rev. a Interface requirements SAS features Dual port support Command name Command code Supported Scsi commands supportedCommands supported by Cheetah 15K.6 SAS family drives Commands supported by Cheetah 15K.6 SAS family drives Commands supported by Cheetah 15K.6 SAS family drives Commands supported by Cheetah 15K.6 SAS family drives Bytes Data hex Mode Sense dataInquiry data Page Mode Pages 2.1 ST3450856SS Mode Sense data 2.2 ST3300656SS Mode Sense data 2.3 ST3146356SS Mode Sense data Miscellaneous features Miscellaneous operating features and conditionsSupported Feature or condition Miscellaneous status SAS physical interface Datum B Connector requirements Physical characteristics Electrical description Pin Signal name Signal typePin descriptions SAS pin descriptions Power Signal characteristicsSAS transmitters and receivers Ready LED Out Differential signals LED drive signalGeneral interface characteristics Eye masks Eye masks overview Jitter tolerance masks Receive eye maskAbsolute amplitude Normalized time in UI Sinusoidal Peak-toJitter Frequency in kHz Signal characteristica Units Gbps Transmitter signal characteristics Signal characteristic Units Gbps Receiver signal characteristicsMaximum allowable jitter Gbps m, n Deterministic jitterq Receiver jitter tolerance Impedance specificationsCompliant jitter test pattern Cjtpat Impedance requirements Sheet 1 Electrical TxRx connections Transmitter characteristicsImpedance requirements Sheet 2 = -5,437dB Shows the zero-length test load Receiver characteristics Cheetah 15K.6 SAS Product Manual, Rev. a Internet Seagate Technology support servicesPresales Support Technical Support Data Recovery Services Call Center Toll-free Direct dial Warranty ServiceData Recovery Services Authorized Service Centers Numerics IndexPage SAS See also cooling