Seagate ST4000NM0063 Performance characteristics, Internal drive characteristics, Access time

Page 18

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 64 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.

10

Constellation ES Series SAS Product Manual, Rev. F

Page 17 Page 19
Image 18
Page 17 Page 19
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. F List of Figures Constellation ES Series SAS Product Manual, Rev. F 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 requirementsRegulation ±5% Constellation ES Series SAS Product Manual, Rev. F +5V General DC power requirement notes Power sequencingConducted noise immunity Current profiles TB model current profilesConstellation ES Series SAS Product Manual, Rev. F 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 Vibration a. Operating-normal Recommended mountingAir cleanliness AcousticsCorrosive environment 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 characteristicsConstellation ES Series SAS Product Manual, Rev. F Index NumericsKCC Msid Mtbf See also cooling Page Constellation ES Series SAS Product Manual, Rev. F Page Seagate Technology LLC

ST4000NM0053, ST4000NM0023, ST32000444SSIM, ST32000646NS, ST3000NM0063 specifications

Seagate is a prominent name in the storage industry, renowned for its high-performance hard disk drives (HDDs). Among its popular enterprise offerings are models like the ST2000NM0043, ST32000645NS, ST3000NM0043, ST2000NM0033, and ST2000NM0023, which cater to various data center and server needs.

The Seagate ST2000NM0043 is a 2TB 7200 RPM SATA drive designed for high availability and performance in enterprise environments. It features a 128MB cache, ensuring efficient data transfer speeds and quick access to frequently used data. This model boasts a mean time between failures (MTBF) of 1.4 million hours, emphasizing its reliability for continuous operation in demanding applications.

The ST32000645NS, offering 2TB of storage and a 7200 RPM spindle speed, is ideal for environments where large amounts of data need to be stored and accessed quickly. It supports SAS interfaces, providing enhanced data integrity and improved system performance. With its aggressive power management features, this model strikes a balance between performance and energy efficiency, making it suitable for both traditional data centers and cloud applications.

The ST3000NM0043 stands out with a capacity of 3TB, further addressing the growing need for more substantial storage solutions. Like its counterparts, it operates at 7200 RPM and is equipped with advanced caching mechanisms that help enhance overall performance. Its high durability and enterprise-grade features make it a preferred choice for storage-intensive applications.

The ST2000NM0033 focuses on delivering storage solutions for environments needing both capacity and reliability. With its 2TB capacity and 7200 RPM rotation speed, it provides an effective solution for businesses looking to balance workload and storage needs without compromising performance. This model also features Seagate's advanced technology that optimizes workflow and minimizes latency.

Lastly, the ST2000NM0023 mirrors many of the features found in its siblings, offering a 2TB capacity and optimized for high reliability and performance. With Seagate's commitment to innovating in the HDD space, features such as self-monitoring, analysis, and reporting technology (SMART) help maintain the drive's health and prevent potential failures.

In conclusion, Seagate's range of HDDs, exemplified by the ST2000NM0043, ST32000645NS, ST3000NM0043, ST2000NM0033, and ST2000NM0023, reflects a dedication to providing robust, high-capacity storage solutions. Their advanced technologies, reliability ratings, and performance features make them ideal choices for enterprise environments demanding efficiency and durability.
Top Page Image Contents