Seagate ST2000NM0063 manual General performance characteristics

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4.2.3

General performance characteristics

 

Minimum sector interleave

1 to 1

Data buffer to/from disk media (one 512-byte logical block)*

95 to 212 MB/s

Sustained transfer rate

62 to 152 MB/s

SAS Interface maximum instantaneous transfer rate

600MB/s* per port

 

 

(dual port = 1200MB/s*)

Logical block sizes

 

 

512 (default), 520 or 528.

 

Read/write consecutive sectors on a track

Yes

Flaw reallocation performance impact (for flaws reallocated at format time using the spare sectors per sparing Negligible zone reallocation scheme.)

Average rotational latency

4.16ms

*Assumes no errors and no relocated logical blocks. Rate measured from the start of the first logical block transfer to or from the host.

4.3START/STOP TIME

The drive accepts the commands listed in the SAS Interface Manual less than 3 seconds after DC power has been applied.

If the drive receives a NOTIFY (ENABLE SPINUP) primitive through either port and has not received a START STOP UNIT command with the START bit equal to 0, the drive becomes ready for normal operations within 30 seconds (excluding the error recovery procedure).

If the drive receives a START STOP UNIT command with the START bit equal to 0 before receiving a NOTIFY (ENABLE SPINUP) primitive, the drive waits for a START STOP UNIT command with the START bit equal to 1. After receiving a START STOP UNIT command with the START bit equal to 1, the drive waits for a NOTIFY (ENABLE SPINUP) primitive. After receiving a NOTIFY (ENABLE SPINUP) primitive through either port, the drive becomes ready for normal operations within 30 seconds (excluding the error recovery procedure).

If the drive receives a START STOP UNIT command with the START bit and IMMED bit equal to 1 and does not receive a NOTIFY (ENABLE SPINUP) primitive within 5 seconds, the drive fails the START STOP UNIT command.

The START STOP UNIT command may be used to command the drive to stop the spindle. Stop time is 20 seconds (maximum) from removal of DC power. SCSI stop time is 20 seconds. There is no power control switch on the drive.

4.4PREFETCH/MULTI-SEGMENTED CACHE CONTROL

The drive provides a prefetch (read look-ahead) and multi-segmented cache control algorithms that in many cases can enhance system performance. Cache refers to the drive buffer storage space when it is used in cache operations. To select this feature, the host sends the Mode Select command with the proper values in the applicable bytes in page 08h. Prefetch and cache operations are independent features from the standpoint that each is enabled and disabled independently using the Mode Select command; however, in actual operation, the prefetch feature overlaps cache operation somewhat as described in sections 4.5.1 and 4.5.2.

All default cache and prefetch mode parameter values (Mode Page 08h) for standard OEM versions of this drive family are given in Table 10.

4.5CACHE OPERATION

Note. Refer to the SAS Interface Manual for more detail concerning the cache bits.

Of the 64MB physical buffer space in the drive, approximately 30,000 kbytes can be used as a cache. The buffer is divided into logical segments from which data is read and to which data is written.

The drive keeps track of the logical block addresses of the data stored in each segment of the buffer. If the cache is enabled (see RCD bit in the SAS Interface Manual ), data requested by the host with a read command is retrieved from the buffer, if possible, before any disk access is initiated. If cache operation is not enabled, the buffer is still used, but only as circular buffer segments during disk medium read operations (disregarding Prefetch operation for the moment). That is, the drive does not check in the buffer segments for the requested read data, but goes directly to the medium to retrieve it. The retrieved data merely passes through some buffer segment on the way to the host. All data transfers to the host are in accordance with buffer-full ratio rules. See the explanation provided with the information about Mode Page 02h (disconnect/reconnect control) in the SAS Interface Manual.

CONSTELLATION ES.1 SAS PRODUCT MANUAL, REV. G

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Contents Constellation ES.1 SAS Document Revision History Contents Installation Inquiry data 11.3.2 Mode Sense data Figures Seagate Technology Support Services Scope Model Number Self-Encrypting Drive SED Fips 140-2 LevelApplicable Standards and Reference Documentation Korean KCC Taiwanese BsmiEuropean Union Restriction of Hazardous Substances RoHS China Restriction of Hazardous Substances RoHS DirectiveSAS Interface Manual General Description Standard Features DDADF508 Performance Characteristics Read Write Average Single trackFull stroke Maximum without verifyGeneral performance characteristics Caching write data Prefetch operationReliability Specifications Recoverable ErrorsUnrecoverable Errors Seek errorsPreventive maintenance Hot plugging the drive4 S.M.A.R.T Controlling S.M.A.R.TPerformance impact Reporting controlThermal monitor Parameter Code DescriptionDrive Self Test DST DST failure definitionState of the drive prior to testing ImplementationInvoking DST Short and extended testsProduct warranty AbortShipping StoragePHYSICAL/ELECTRICAL Specifications 2TB drive Standard & SED model DC power requirements 0Gb mode Amps1TB drive Standard & SED model DC power requirements 500GB drive Standard & SED model DC power requirements Conducted noise immunity Power sequencingCurrent profiles TB model current profiles GB model current profiles Power Dissipation Constellation ES.1 SAS Product MANUAL, REV. G Constellation ES.1 SAS Product MANUAL, REV. G Constellation ES.1 SAS Product MANUAL, REV. G Constellation ES.1 SAS Product MANUAL, REV. G Constellation ES.1 SAS Product MANUAL, REV. G Temperature a. Operating Relative humidityEffective altitude sea level a. Operating Shock and vibrationPackage size Packaged/product weight Drop height ShockAir cleanliness VibrationAcoustics Corrosive environmentWeight maximum Mounting configuration dimensionsValidation Program PurposeSeagate Enterprise SED Admin SP Default passwordAbout SELF-ENCRYPTING Drives Locking SPSanitize Cryptographic Erase Defect and Error Management Drive Internal DEFECTS/ERRORSRead and write retry count maximum recovery times Levels of PI Setting and determining the current Type LevelIdentifying a Protection Information drive Installation Physical interfaceX = F 15lb = 67N Interface Requirements Task management functionsSAS task management functions supported Task management responsesSupported commands Command name Command code SupportedSupported commands Supported commands Supported commands Inquiry data Mode Sense data Mode Pages Mode Sense data changeable and default values for 1TB drives Mode Pages Miscellaneous features Supported Feature or conditionMiscellaneous status Supported StatusDatum B Section C C Section a a Physical characteristics Connector requirementsPin Signal name Signal type Electrical descriptionPower SAS transmitters and receiversReady LED Out Ready LED Out conditionsDifferential signals LED drive signalGeneral interface characteristics Index Latency Index SAS Seagate Technology LLC

ST2000NM0063 specifications

The Seagate ST2000NM0063 is a high-performance internal hard disk drive designed for enterprise environments, offering a robust solution for those requiring reliable data storage. With a storage capacity of 2TB, this drive is ideal for both small and large enterprises, catering to applications ranging from data centers to surveillance systems.

One of the main features of the ST2000NM0063 is its 7200 RPM rotational speed, which ensures rapid data access and improved overall performance. This speed allows for faster read and write times, making it suitable for applications that demand quick data retrieval and processing. The drive supports a SATA 6Gb/s interface, which provides enhanced data transfer rates. This modern interface is essential for maximizing throughput, particularly when deployed in environments where speed is critical.

In terms of technology, the Seagate ST2000NM0063 utilizes Advanced Format Technology, enhancing data storage efficiency and increasing the number of user-addressable sectors. This feature allows for better alignment of data on the drive, which can lead to improved performance and reliability. Additionally, the drive incorporates the Seagate PowerChoice technology, enabling energy-efficient operations. This technology helps reduce power consumption during idle periods, contributing to lower operating costs and a smaller carbon footprint.

The ST2000NM0063 also emphasizes data integrity and reliability. Equipped with features such as error recovery control and vibration tolerance, this drive is designed to operate in challenging conditions. These attributes make it an excellent choice for RAID configurations and other enterprise applications that require high data availability and protection against data loss.

Furthermore, the ST2000NM0063 has a mean time between failures (MTBF) rating of 1.2 million hours, signifying its durability and long lifespan. This reliability is crucial for critical business applications where downtime is not an option.

In summary, the Seagate ST2000NM0063 combines high capacity, excellent performance, and advanced technologies to meet the demanding needs of enterprise storage. Its reliability, efficiency, and robust features make it a preferred choice for organizations looking to enhance their data storage solutions while ensuring optimal performance and longevity. Whether utilized in cloud storage, surveillance, or data center applications, this hard drive stands out as a dependable component in any IT infrastructure.
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