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Seagate ST33000652SS Performance characteristics, Internal drive characteristics, Access time

Models: ST33000652SS ST33000650SS ST33000651SS

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5.0Performance characteristics

5.0Performance characteristics

This section provides detailed information concerning performance-related characteristics and features of Constellation ES.2 drives.

5.1Internal drive characteristics

	ST33000650SS
	ST33000651SS
	ST33000652SS
Drive capacity	3	TB (formatted, rounded off value)
Read/write data heads	10
Bytes per track	1,419,776	Bytes (average, rounded off values)
Bytes per surface	300,000	MB (unformatted, rounded off value)
Tracks per surface (total)	284,399	Tracks (user accessible)
Tracks per inch	270,000	TPI (average)
Peak bits per inch	1,638,000	BPI
Areal density	444	Gb/in2
Internal data rate	68.7 - 155	MB/s (variable with zone)
disk rotation speed	7200	rpm
Avg rotational latency	4.16	ms

5.2Seek performance characteristics

See Section 12.4.1, "SAS physical interface" on page 55 and the SAS Interface Manual (part number 100293071) for additional timing details.

5.2.1Access time

		Not including controller overhead1, 2 (ms)		Including controller overhead1, 2 (ms)
		Read	Write	Read	Write
Average	Typical3,4	8.3	9.3	8.5	9.5
Single track	Typical3,4	0.5	0.5	0.7	0.7
Full stroke	Typical3,4	15.5	16.2	15.7	16.4

1.Execution time measured from receipt of the Command to the Response.

2.Assumes no errors and no sector has been relocated.

3.Typical access times are measured under nominal conditions of temperature, voltage, and horizontal orientation as measured on a representative sample of drives.

4.Access time = controller overhead + average seek time and applies to all data transfer commands. Access to data = access time + latency time.

10	Constellation ES.2 SAS Product Manual, Rev. D

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Seagate ST33000652SS manual Performance characteristics, Internal drive characteristics, Seek performance characteristics

Contents

Product Manual ST33000650SSST33000651SSConstellation ES.2 SAS Standard ModelRevision history 5.0 Performance characteristics Contents1.0 Seagate Technology support services 2.0 Scope 6.0 Reliability specifications8.0 About FIPS 9.0 About self-encrypting drives 10.0 Defect and error management11.0 Installation 12.0 Interface requirements12.4.1 SAS physical interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 12.4.2 Physical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 12.4.3 Connector requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 12.4.4 Electrical description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 12.4.5 Pin descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 12.4.6 SAS transmitters and receivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 12.4.7 Power Constellation ES.2 SAS Product Manual, Rev. D List of Figures Constellation ES.2 SAS Product Manual, Rev. D 1.0 Seagate Technology support services SEAGATE ONLINE SUPPORT and SERVICESSelf-Encrypting Drive SED 2.0 ScopeModel Number FIPS 140-2 Level 2 Review Pending3.1.1 Electromagnetic compatibility 3.0 Applicable standards and reference documentation3.1 Standards 3.1.1.1 Electromagnetic susceptibilityAustralian C-Tick 3.1.2 Electromagnetic complianceElectromagnetic compliance for the European Union Korean KCC3.1.3 European Union Restriction of Hazardous Substances RoHS Specification for Acoustic Test Requirement and Procedures 3.2 Reference documentsSCSI Commands Reference Manual SAS Interface Manual4.0 General description 4.1 Standard features 4.2 Media description4.3 Performance 4.5 Formatted capacities 4.7 Factory-installed options4.4 Reliability 4.6 Programmable drive capacity5.2 Seek performance characteristics 5.0 Performance characteristics5.1 Internal drive characteristics 5.2.1 Access time5.2.3 General performance characteristics 5.3 Start/stop time5.2.2 Format command execution time for 512-byte sectors minutes ST33000650SS5.4 Prefetch/multi-segmented cache control 5.5 Cache operation5.5.1 Caching write data 5.5.2 Prefetch operation6.1.1 Recoverable Errors 6.0 Reliability specifications6.1 Error rates 6.1.2 Unrecoverable Errors6.1.4 Interface errors 6.2 Reliability and service6.1.3 Seek errors 6.2.2 Preventive maintenanceFully-enabled delay Maximum processing delayOn-line only delay 6.2.4 S.M.A.R.T6.2.5 Thermal monitor Table 1 Temperature Log Page 0DhPredictive failures Parameter Code6.2.6.1 DST failure definition 6.2.6.2.1 State of the drive prior to testing6.2.6 Drive Self Test DST 6.2.6.2 ImplementationExtended test Function Code 010b 6.2.6.2.3 Short and extended testsShort test Function Code 001b 6.2.6.2.4 Log page entriesStorage 6.2.7 Product warrantyShipping Product repair and return information7.0 Physical/electrical specifications 7.1 PowerChoiceTM power managementPowerChoice modes 7.1.1 PowerChoice reporting methods 7.2 AC power requirements7.3 DC power requirements Request Sense command reports1 Measured with average reading DC ammeter General DC power requirement notes 7.3.2 Power sequencing7.3.1 Conducted noise immunity 7.3.3 Current profiles Figure 1. 3TB model current profiles7.4 Power dissipation 3TB models in 3Gb operation3TB models in 6Gb operation 7.5 Environmental limits 7.5.1 Temperature a. Operating7.5.2 Relative humidity 7.5.3 Effective altitude sea level a. Operating 7.5.4 Shock and vibration7.5.4.1 Shock Drop height Packaged/product weightPackage size Figure 5. Recommended mounting7.5.5 Acoustics 7.5.6 Air cleanliness7.5.4.2 Vibration a. Operating-normal 7.5.7 Corrosive environment7.5.8 Electromagnetic susceptibility in mm in mm 7.6 Mechanical specificationsFigure 6. Mounting configuration dimensions Breather8.0 About FIPS PurposeLevel 2 security 9.1 Data encryption 9.2 Controlled access9.0 About self-encrypting drives 9.2.1 Admin SP9.5 Data bands 9.3 Random number generator RNG9.4 Drive locking 9.6 Cryptographic erase9.9 Supported commands 9.7 Authenticated firmware download9.8 Power requirements 9.10 RevertSP10.0 Defect and error management 10.1 Drive internal defects/errors10.2 Drive error recovery procedures Table 3 Read and write retry count maximum recovery times 10.3 SAS system errors10.4 Background Media Scan Maximum recovery time per10.5 Media Pre-Scan 10.6 Deferred Auto-Reallocation10.7 Idle Read After Write 10.8.1 Levels of PI 10.8 Protection Information PI10.8.2 Setting and determining the current Type Level 10.8.3 Identifying a Protection Information drive11.0 Installation 11.1 Drive orientation11.2 Cooling Figure 9. Air flow11.3 Drive mounting 11.4 GroundingK x X = F 15lb = 67N 12.1.1 task management functions 12.1 SAS features12.0 Interface requirements SAS task management functions supported12.2 Dual port support 12.3 SCSI commands supported Supported commandsSupported commands Supported commands Supported commands Constellation ES.2 inquiry data 12.3.2 Mode Sense data12.3.1 Inquiry data Bytes4. Changeable values CHG = Changeable bits indicates if default value is changeable3. Current values Constellation ES.2 SAS Product Manual, Rev. DTable 8 Mode Sense data changeable and default values for 3TB drives 12.4 Miscellaneous operating features and conditions Miscellaneous featuresMiscellaneous status 12.4.1 SAS physical interface Figure 10. Physical interfaceFigure 11. SAS device plug dimensions C OF DATUM BFigure 12. SAS device plug dimensions detail TO DATUM A12.4.4 Electrical description 12.4.2 Physical characteristics12.4.3 Connector requirements 12.4.5 Pin descriptions12.4.6 SAS transmitters and receivers 12.5 Signal characteristics12.4.7 Power 12.5.1 Ready LED OutLED drive signal 12.6 SAS-2 Specification Compliance12.7 Additional information 12.5.2 Differential signalsNumerics IndexPage Page See also cooling Type 2 PI format unformatted 9 Unrecoverable Errors 14 unrecovered media datawarranty vibration 29Constellation ES.2 SAS Product Manual, Rev. D Page Seagate Technology LLC