Seagate ST31000425SS Performance characteristics, Internal drive characteristics, Access time

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5.0Performance characteristics

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

5.1Internal drive characteristics

 

ST32000444SS

ST31000424SS

ST3500414SS

 

 

ST32000445SS

ST31000425SS

ST3500415SS

 

 

ST32000446SS

ST31000426SS

ST3500416SS

 

Drive capacity

2000

1000

500

GB (formatted, rounded off value)

Read/write data heads

8

4

2

 

Bytes per track

1,012,608

1,012,608

1,012,608

Bytes (average, rounded off values)

Bytes per surface

250,000

250,000

250,000

MB (unformatted, rounded off value)

Tracks per surface (total)

248,600

248,600

248,600

Tracks (user accessible)

Tracks per inch

237,000

237,000

237,000

TPI (average)

Peak bits per inch

1,515,000

1,515,000

1,515,000

BPI

Areal density

347

347

347

Gb/in2

Internal data rate

95 - 212

95 - 212

95 - 212

MB/s (variable with zone)

Disc rotation speed

7200

7200

7200

rpm

Avg rotational latency

4.16

4.16

4.16

ms

5.2Seek performance characteristics

See Section 12.4.1, "SAS physical interface" on page 65 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

0.8

0.7

1.0

Full stroke

Typical3,4

18

19

18.2

19.2

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.

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Constellation ES Series SAS Product Manual, Rev. E

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Contents ST32000446SS ST31000426SS ST3500416SS Standard Models Self-Encrypting Drive ModelsSED Fips 140-2 Models Revision history Contents About Fips About self-encrypting drives Defect and error managementInstallation Interface requirementsPower Constellation ES Series SAS Product Manual, Rev. E List of Figures Constellation ES Series SAS Product Manual, Rev. E Seagate Technology support services Seagate Online Support and ServicesScope Electromagnetic compatibility Applicable standards and reference documentationStandards Electromagnetic susceptibilityAustralian C-Tick Electromagnetic complianceElectromagnetic compliance for the European Union Korean KCCReference documents European Union Restriction of Hazardous Substances RoHSGeneral description Standard features Media descriptionFormatted capacities PerformanceReliability Programmable drive capacityFactory-installed options Seek performance characteristics Performance characteristicsInternal drive characteristics Access timeGeneral performance characteristics Start/stop timePrefetch/multi-segmented cache control Cache operationCaching write data Prefetch operationRecoverable Errors Reliability specificationsError rates Unrecoverable ErrorsInterface errors Reliability and serviceSeek errors Preventive maintenancePerformance impact 4 S.M.A.R.TControlling S.M.A.R.T Reporting controlTemperature Log Page 0Dh Parameter Code Description Predictive failuresThermal monitor DST failure definition State of the drive prior to testingDrive Self Test DST ImplementationExtended test Function Code 010b Short and extended testsShort test Function Code 001b Log page entriesProduct warranty ShippingProduct repair and return information Physical/electrical specifications PowerChoiceTM power managementPowerChoice modes AC power requirements DC power requirementsConstellation ES Series SAS Product Manual, Rev. E Constellation ES Series SAS Product Manual, Rev. E Page General DC power requirement notes Power sequencingConducted noise immunity Current profiles TB model current profilesConstellation ES Series SAS Product Manual, Rev. E GB model current profiles Power dissipation 2TB models in 3Gb operation2TB models in 6Gb operation 1TB models in 3Gb operation 1TB models in 6Gb operation ST3500414SS CURRENT/POWER vs Throughput SAS 3.0GB 500GB models in 3Gb operationOs per Second 500GB models in 6Gb operation Temperature a. Operating Environmental limitsRelative humidity Effective altitude sea level a. Operating Shock and vibrationShock Recommended mounting Acoustics Air cleanlinessVibration a. Operating-normal Corrosive environmentElectromagnetic susceptibility Mechanical specifications Mounting configuration dimensionsAbout Fips PurposeLevel 2 security About self-encrypting drives Controlled accessAdmin SP Data encryptionDrive locking Default passwordRandom number generator RNG Data bandsSupported commands Authenticated firmware downloadPower requirements Cryptographic eraseDefect and error management Drive internal defects/errorsDrive error recovery procedures SAS system errors Background Media Scan Media Pre-ScanDeferred Auto-Reallocation Idle Read After Write Installation Drive orientationCooling Air flowDrive mounting GroundingSAS features Interface requirementsDual port support Scsi commands supported Supported commandsSupported commands Supported commands Supported commands Mode Sense data Inquiry dataConstellation ES inquiry data Page Mode Sense data changeable and default values for 2TB drives Mode Sense data changeable and default values for 1TB drives 3a 38 60 30 00 00 02 Miscellaneous operating features and conditions Miscellaneous featuresMiscellaneous status SAS physical interface Datum B Section C C Section a a Electrical description Physical characteristicsConnector requirements Pin descriptionsSAS transmitters and receivers Signal characteristicsPower Ready LED OutDifferential signals SAS-2 Specification ComplianceLED drive signal General interface characteristicsIndex NumericsKCC Msid Mtbf See also cooling Page Constellation ES Series SAS Product Manual, Rev. E Page Seagate Technology LLC

ST3500414SS, ST3500415SS, ST32000445SS, ST31000425SS, ST32000446SS specifications

Seagate, a leader in data storage solutions, has introduced a range of high-capacity and reliable hard drives designed for enterprise environments, including the Seagate ST31000424SS, ST3500416SS, ST31000426SS, ST32000444SS, and ST32000446SS. Each of these models is built with an emphasis on performance, endurance, and advanced data protection technologies, catering to mission-critical applications and data-intensive workloads.

The ST31000424SS is a 1TB drive designed for servers and data centers. It offers a 7,200 RPM spindle speed and a 6 Gb/s SATA interface, ensuring quick data access and transfer rates. With a 64MB cache buffer, the ST31000424SS provides enhanced read/write performance, making it suitable for applications that demand quick responses from the storage subsystem.

Similarly, the ST3500416SS is a high-capacity 500GB model, also spinning at 7,200 RPM with a 6 Gb/s SATA interface. This drive is ideal for mid-range servers and enterprise storage, providing an excellent balance of performance and capacity for users looking to optimize their storage efficiency while maintaining lower power consumption.

The ST31000426SS expands the capacity to 1TB while retaining the same reliability and performance characteristics as its counterparts. Its robust design ensures reliability in multi-drive environments, making it an appealing choice for virtualization and database applications, where performance is critical.

The ST32000444SS and ST32000446SS represent Seagate's commitment to higher capacities, with both offering 2TB of storage. They both feature 7,200 RPM speeds, 6 Gb/s SATA interfaces, and 64MB cache buffers, catering to high-demand environments such as cloud storage and data analytics. The drives also integrate advanced error recovery and data integrity features, ensuring the protection of sensitive data, which is vital for enterprise users.

Each model supports Seagate's PowerChoice technology, which optimizes power consumption without sacrificing performance, enhancing energy efficiency in modern data centers. With a broad range of capacities and performance levels, these Seagate drives provide scalable solutions tailored to meet the robust demands of today’s enterprise applications, ensuring reliability and performance for critical data operations.
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