Seagate ST9146852SS, ST973452SS, ST973352SS manual Performance, Reliability, Formatted capacities

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4.3Performance

•Firmware-controlled multisegmented cache designed to dynamically adjust segments for enhanced system performance

•600 Mbytes/sec maximum instantaneous data transfers

•15k RPM spindle. Average latency = 2.0 msec

•Background processing of queue

•Supports start and stop commands (spindle stops spinning)

•Adaptive seek velocity; improved seek performance

Note. There is no significant performance difference between Self-Encrypting Drive and standard (non- Self-Encrypting Drive) models.

4.4Reliability

•Annualized Failure Rate (AFR) of 0.55%

•Mean Time Between Failures (MTBF) of 1,600,000 hours

•Balanced low mass rotary voice coil actuator

•Incorporates industry-standard Self-Monitoring Analysis and Reporting Technology (S.M.A.R.T.)

•5-year warranty

4.5Formatted capacities

Standard OEM models are formatted to 512 bytes per block. The block size is selectable at format time and must be a multiple of 4 bytes. Users having the necessary equipment may modify the data block size before issuing a format command and obtain different formatted capacities than those listed.

To provide a stable target capacity environment and at the same time provide users with flexibility if they choose, Seagate recommends product planning in one of two modes:

Seagate designs capacity points at certain block sizes that Seagate guarantees current and future products will meet. We recommend customers use this capacity in their project planning, as it ensures a stable operating point with backward and forward compatibility from generation to generation. The current guaranteed operating points for this product are:

Capacity (Blocks)

		ST9146852SS			ST973452SS
		ST9146752SS			ST973352SS
		ST9146652SS			ST973252SS

Sector Size	Decimal		Hex	Decimal		Hex

512	286,749,488		11177330	143,374,744		88BB998

520	280,790,185		10BC84A9	140,395,093		85E4255

524	275,154,368		106685C0	137,577,184		83342E0

528	272,662,935		10408197	136,331,467		82040CB

8	Savvio 15K.2 SAS Product Manual, Rev. E

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Contents ST9146852SSST9146752SS ST973452SSST973352SS ST9146652SS ST973252SSStandard Models Self-Encrypting Drive Models SED Fips 140-2 ModelsPage Contents Defect and error management InstallationAbout Fips About self-encrypting drives Interface requirementsPage Savvio 15K.2 SAS Product Manual, Rev. E List of Figures Page Seagate Technology support services Seagate Online Support and ServicesScope Applicable standards and reference documentation StandardsElectromagnetic compatibility Electromagnetic susceptibilityElectromagnetic compliance Electromagnetic compliance for the European UnionAustralian C-Tick Korean MICReference documents European Union Restriction of Hazardous Substances RoHSGeneral description Standard features Media descriptionReliability PerformanceFormatted capacities Programmable drive capacity OptionsPerformance characteristics Internal drive characteristicsSeek performance characteristics Access timeGeneral performance characteristics Format command execution timeStart/stop time Prefetch/multi-segmented cache control Cache operationCaching write data Prefetch operationReliability specifications Error ratesRecoverable Errors Unrecoverable ErrorsReliability and service Seek errorsInterface errors Preventive maintenance4 S.M.A.R.T Controlling S.M.A.R.TPerformance impact Reporting controlPredictive failures Temperature Log Page 0Dh Parameter Code DescriptionThermal monitor State of the drive prior to testing Drive Self Test DSTDST failure definition ImplementationShort and extended tests Short test Function Code 001bExtended test Function Code 010b Log page entriesShipping Product warrantyProduct repair and return information AC power requirements Physical/electrical specificationsDC power requirements 146GB models DC power requirements Gbit mode Amps73GB models DC power requirements Power sequencing General DC power requirement notesConducted noise immunity Current profiles Current profile for 146GB modelsCurrent profile for 73GB models 146GB models in 6.0 Gbit operation Power dissipation146GB models in 3.0 Gbit operation 73GB models in 6.0 Gbit operation 73GB models in 3.0 Gbit operationEnvironmental limits Temperature a. OperatingRelative humidity Shock and vibration Effective altitude sea level a. OperatingShock Recommended mounting Vibration a. Operating-normal Air cleanlinessCorrosive environment Acoustics Mechanical specifications DimensionsPurpose About FipsLevel 2 security Controlled access Admin SPAbout self-encrypting drives Data encryptionDefault password Random number generator RNGDrive locking Data bandsAuthenticated firmware download Power requirementsSupported commands Cryptographic eraseDrive internal defects/errors Defect and error managementDrive error recovery procedures SAS system errors Media Pre-Scan Background Media 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 Inquiry data Mode Sense dataSavvio inquiry data Page Mode Data Header 00 00 05 12 8B 00 10 Miscellaneous features Miscellaneous operating features and conditionsMiscellaneous status SAS physical interface Datum B Section C C Section a a Physical characteristics Connector requirementsElectrical description Pin descriptionsSAS pin descriptions SAS transmitters and receiversSignal characteristics General interface characteristics SAS-2 Specification complianceAdditional information Savvio 15K.2 SAS Product Manual, Rev. E Index NumericsIraw Msid Mtbf See also cooling