ST3300656SS in 3 Gbit operation | Seagate ST3146356SS, ST3450856SS

ST3300656SS in 3 Gbit operation

Typical power dissipation under idle conditions in 3Gb operation is 11.19 watts (38.15 BTUs per hour).

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.

		ST3300656SS CURRENT/POWER vs THROUGHPUT (SAS - 3.0GB)
	1.400				Random 8 Block Reads				18.00
	1.400								18.00	5Volt A
										5Volt A
									16.00	12 Volt A
	1.200								16.00	Watts
	1.200

									14.00
	1.000
									12.00	Power (watts)
Amperes	0.800								10.00
									10.00
	0.600								8.00
	0.600
									6.00
									6.00
	0.400
									4.00
	0.200								2.00
									2.00
	0.000								0.00
	0.0	50.0	100.0	150.0	200.0	250.0	300.0	350.0	400.0
				I/Os per Second

Figure 6. ST3300656SS (3 Gbit) DC current and power vs. input/output operations per second

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

Image 36

Seagate ST3146356SS, ST3450856SS manual ST3300656SS in 3 Gbit operation, ST3300656SS CURRENT/POWER vs Throughput SAS 3.0GB

Contents

Cheetah 15K.6 SAS ST3450856SS ST3300656SS ST3146356SSPage Contents Defect and error management InstallationSeagate Technology support services Interface requirements List of Figures Cheetah 15K.6 SAS disk drive Cheetah 15K.6 SAS Product Manual, Rev. a Scope Cheetah 15K.6 SAS disk drive Cheetah 15K.6 SAS Product Manual, Rev. a Standards, compliance and reference documents StandardsElectromagnetic compatibility Electromagnetic susceptibility Compliance European Union Restriction of Hazardous Substances RoHS Reference documents Cheetah 15K.6 SAS Product Manual, Rev. a General description Standard features Media descriptionPerformance Factory-installed accessories Options factory installedReliability Formatted capacities Cheetah 15K.6 SAS Product Manual, Rev. a Performance characteristics Internal drive characteristicsAccess time Seek time Format command execution time minutes General performance characteristicsStart/stop time Prefetch/multi-segmented cache control Cache operation Caching write data Prefetch operation Reliability specifications Error ratesRecoverable Errors Unrecoverable Errors Reliability and service Seek errorsInterface errors Preventive maintenance 4 S.M.A.R.T Controlling S.M.A.R.TPerformance impact Milliseconds Reporting control Determining ratePredictive failures Thermal monitor Temperature Log Page 0Dh Primary TemperatureReference Temperature Parameter Code Description State of the drive prior to testing Invoking DSTShort and extended tests Short test Function Code 001b Product warranty AbortShipping Product repair and return information Cheetah 15K.6 SAS Product Manual, Rev. a Physical/electrical specifications AC power requirementsDC power requirements ST3450856SS DC power requirements ST3300656SS DC power requirements ST3146356SS DC power requirementsST3300656SS Gbit mode Amps ST3146356SS Gbit mode Amps General DC power requirement notes Power sequencingConducted noise immunity Current profiles Typical ST3450856SS current profiles Typical ST3300656SS current profiles Typical ST3146356SS current profiles Power dissipation ST3450856SS in 3 Gbit operation ST3300656SS CURRENT/POWER vs Throughput SAS 3.0GB ST3300656SS in 3 Gbit operation ST3146356SS CURRENT/POWER vs Throughput SAS 3.0GB ST3146356SS in 3 Gbit operationRandom 8 Block Reads Temperature Environmental limits Relative humidity Effective altitude sea levelShock and vibration Shock Package size Packaged/product weight Drop height Recommended mounting Air cleanliness VibrationAcoustics Corrosive environment Mechanical specifications Physical dimensions Cheetah 15K.6 SAS Product Manual, Rev. a Defect and error management Drive internal defects/errorsDrive error recovery procedures 51.87 SAS system errors Background Media ScanMedia Pre-Scan Deferred Auto-Reallocation Idle Read After Write Installation Drive orientation Cooling Air flow Drive mounting Grounding Cheetah 15K.6 SAS Product Manual, Rev. a SAS features Interface requirements Dual port support Scsi commands supported Commands supported by Cheetah 15K.6 SAS family drivesCommand name Command code Supported 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 Mode Sense data Inquiry dataBytes Data hex Page 2.1 ST3450856SS Mode Sense data Mode Pages 2.2 ST3300656SS Mode Sense data 2.3 ST3146356SS Mode Sense data Miscellaneous operating features and conditions Miscellaneous featuresSupported Feature or condition Miscellaneous status SAS physical interface Datum B Physical characteristics Connector requirements Pin Signal name Signal type Electrical descriptionPin descriptions SAS pin descriptions Signal characteristics PowerSAS transmitters and receivers Ready LED Out LED drive signal Differential signalsGeneral interface characteristics Eye masks Eye masks overview Receive eye mask Jitter tolerance masksAbsolute amplitude Normalized time in UI Peak-to SinusoidalJitter Frequency in kHz Transmitter signal characteristics Signal characteristica Units Gbps Receiver signal characteristics Signal characteristic Units GbpsMaximum allowable jitter Gbps m, n Deterministic jitterq Impedance specifications Receiver jitter toleranceCompliant jitter test pattern Cjtpat Impedance requirements Sheet 1 Transmitter characteristics Impedance requirements Sheet 2Electrical TxRx connections = -5,437dB Shows the zero-length test load Receiver characteristics Cheetah 15K.6 SAS Product Manual, Rev. a Seagate Technology support services InternetPresales Support Technical Support Warranty Service Data Recovery Services Authorized Service CentersData Recovery Services Call Center Toll-free Direct dial Index NumericsPage SAS See also cooling