Seagate ST3300657SS, ST3300557SS manual Reliability specifications, Error rates, Recoverable Errors

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Less than 10 errors in 1012 bits transferred (OEM default settings) Less than 1 sector in 1016 bits transferred

Less than 1 sector in 1021 bits transferred Less than 1 error in 1012 bits transferred 1,600,000 hours

0.55%

None required

5.0Reliability specifications

The following reliability specifications assume correct host and drive operational interface, including all inter- face timings, power supply voltages, environmental requirements and drive mounting constraints.

Seek error rate:Less than 10 errors in 108 seeks

Read Error Rates

Recovered Data

Unrecovered Data

Miscorrected Data

Interface error rate:

MTBF

AFR

Preventive maintenance:

5.1Error rates

The error rates stated in this manual assume the following:

•The drive is operated per this specification using DC power as defined in this manual (see Section 6.2).

•Errors caused by host system failures are excluded from error rate computations.

•Assume random data.

•Default OEM error recovery settings are applied. This includes AWRE, ARRE, full read retries, full write retries and full retry time.

•Error rate specified with automatic retries and data correction with ECC enabled and all flaws reallocated

5.1.1Recoverable Errors

Recoverable errors are those detected and corrected by the drive, and do not require user intervention.

Recoverable Data errors use retries and correction. Application of ECC on-the-fly correction alone is not con- sidered a Recovered Data error.

Recovered Data error rate is determined using read bits transferred for recoverable errors occurring during a read, and using write bits transferred for recoverable errors occurring during a write.

5.1.2Unrecoverable Errors

Unrecoverable Data Errors (Sense Key = 03h) are specified at less than 1 sector in error per 1016 bits trans- ferred. Unrecoverable Data Errors resulting from the same cause are treated as 1 error for that block.

12	Cheetah 15K.7 SAS Product Manual, Rev. A

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Contents Cheetah 15K.7 SAS Standard models Self-Encrypting Drive modelsPage Contents About self-encrypting drives Defect and error managementInstallation Interface requirementsSeagate Technology support services Cheetah 15K.7 SAS Product Manual, Rev. a Scope Model Number Capacity Self-Encrypting Drive SEDElectromagnetic compatibility Standards, compliance and reference documentsStandards Electromagnetic susceptibilityCompliance European Union Restriction of Hazardous Substances RoHSReference documents General description Standard features Media descriptionPerformance Formatted capacities Factory-installed optionsReliability Programmable drive capacityAccess time Performance characteristicsInternal drive characteristics Seek timeFormat command execution time minutes General performance characteristicsStart/stop time Prefetch/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 MillisecondsPredictive failures Reporting controlDetermining rate Thermal monitorDrive Self Test DST Temperature Log Page 0Dh Parameter Code DescriptionState of the drive prior to testing DST failure definitionShort test Function Code 001b Invoking DSTShort and extended tests Extended test Function Code 010bShipping Product warrantyAbort Product repair and return informationPhysical/electrical specifications AC power requirementsDC power requirements 600 GB DC power requirements ST3600057SS ST3600957SS Gbit mode Amps450 GB DC power requirements ST3450857SS ST3450757SS Gbit mode Amps300 GB DC power requirements ST3300657SS ST3300557SS Gbit mode AmpsPower sequencing Conducted noise immunityCurrent profiles Typical 600GB current profiles Typical 300GB current profiles Power dissipation ST3600057SS modelST3450857SS model Temperature Environmental limitsST3300657SS model Shock and vibration Relative humidityEffective altitude sea level ShockPackage size Packaged/product weight Drop height Vibration Recommended mountingCorrosive environment Air cleanlinessAcoustics RoHS compliance statementMechanical specifications Physical dimensionsAbout self-encrypting drives Controlled accessAdmin SP Data encryptionDrive locking Authenticated firmware downloadRandom number generator RNG Data bandsPower requirements Supported commandsDefect and error management Drive internal defects/errorsDrive error recovery procedures Page SAS system errors Background Media ScanMedia Pre-Scan Deferred Auto-ReallocationIdle Read After Write Installation Drive orientationCooling Drive mounting GroundingSAS features Interface requirementsCommand name Command code Supported Scsi commands supportedCommands supported by Cheetah 15K.6 SAS family drives Dual port supportCommands supported by Cheetah 15K.6 SAS family drives Commands supported by Cheetah 15K.6 SAS family drives Commands supported by Cheetah 15K.6 SAS family drives Inquiry data Cheetah 15K.7 inquiry data Bytes Data hexMode Sense data 10.3.2.1 ST3600057SS and ST3600957SS Mode Sense data Mode PagesDEF CHG 10.3.2.2 ST3450857SS and ST3450757SS Mode Sense data Mode Data Header Block Descriptor Mode PagesDEF CHG Read Capacity Data Buffer C D E F 10.3.2.3 ST3300657SS and ST3300557SS Mode Sense data Mode PagesSupported Feature or condition Miscellaneous operating features and conditionsMiscellaneous features Miscellaneous statusSAS physical interface Physical interfaceDatum B Physical characteristics Connector requirementsPin descriptions Pin Signal name Signal typeElectrical description SAS pin descriptionsSAS transmitters and receivers Signal characteristicsPower Ready LED OutDifferential signals SAS-2 Specification complianceLED drive signal General interface characteristicsSeagate Technology support services Presales SupportTechnical Support Warranty Service Data Recovery Services Authorized Service CentersData Recovery Services Call CenterToll-freeDirect dialFAX Cheetah 15K.7 SAS Product Manual, Rev. a Index NumericsPage SAS Smart

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