Reliability specifications, Error rates | Seagate ST373453LC

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 Rates1
Recovered Data	Less than 10 errors in 1012 bits transferred (OEM default settings)
Unrecovered Data	Less than 1 sector in 1016 bits transferred
Miscorrected Data	Less than 1 sector in 1021 bits transferred
Interface error rate:	Less than 1 error in 1012 bits transferred with minimum receive eye.
	Less than 1 error in 1014 bits transferred with typical receive eye.
	See Section 9.6.4, "FC Differential input." on page 72
Annualized Failure Rate (AFR):	0.62%
Preventive maintenance:	None required

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

5.1Error rates

The error rates stated in this manual assume the following:

•The drive is operated in accordance with this manual using DC power as defined in paragraph 6.2, "DC power requirements."

•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.

5.1.1Recoverable Errors

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

Recoverable Data errors will use correction, although ECC on-the-fly is not considered for purposes of recov- ered error specifications.

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.

Cheetah 15K.5 FC Product Manual, Rev. F

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Seagate ST373453LC manual Reliability specifications, Error rates, Recoverable Errors, Unrecoverable Errors

Contents

ST3300655FC ST3146855FC ST373455FC Cheetah 15K.5 FCPage Contents Interface requirements Defect and error managementInstallation Seagate Technology support services Cheetah 15K.5 FC Product Manual, Rev. F List of Figures Page Scope Cheetah 15K.5 FC Product Manual, Rev. F Electromagnetic susceptibility Applicable standards and reference documentationStandards Electromagnetic compatibility European Union Restriction of Hazardous Substances RoHS Ncits TR-20 Reference documents Cheetah 15K.5 FC Product Manual, Rev. F General description Media description Standard features Programmable drive capacity PerformanceReliability Formatted capacities User-installed accessories Factory-installed accessoriesFactory-installed options Access time Performance characteristicsInternal drive characteristics Seek performance characteristics Prefetch/multi-segmented cache control Format command execution time minutesGeneral performance characteristics Start/stop time Caching write data Cache operation Prefetch operation Unrecoverable Errors Reliability specificationsError rates Recoverable Errors Preventive maintenance Reliability and serviceSeek errors Interface errors Milliseconds 4 S.M.A.R.TControlling S.M.A.R.T Performance impact Thermal monitor Reporting controlDetermining rate Predictive failures DST failure definition State of the drive prior to testingParameter Code Description Drive Self Test DST Extended test Function Code 010b Invoking DSTShort and extended tests Short test Function Code 001b Product repair and return information Product warrantyAbort Shipping Cheetah 15K.5 FC Product Manual, Rev. F DC power requirements for ST3300655FC model Gbit Amps Physical/electrical specificationsAC power requirements DC power requirements DC power requirements for ST373455FC model Gbit Amps DC power requirements for ST3146855FC model Gbit Amps Current profiles General DC power requirement notesPower sequencing Conducted noise immunity Typical ST3300655FC drive, 4 Gbit, +12V current profile Typical ST3146855FC drive, 4 Gbit, +12V current profile Typical ST373455FC drive, 4 Gbit, +12V current profile ST3300655FC Power dissipation ST3146855FC ST3146855FC CURRENT/POWER vs Throughput FC 4GB ST373455FC TemperatureST373455FC CURRENT/POWER vs Throughput FC 4GB Environmental limits Shock Relative humidityEffective altitude sea level Shock and vibration Package size Packaged/product weight Drop height Recommended mounting Corrosive environment Air cleanlinessVibration Acoustics RoHS compliance statement Mounting configuration dimensions Mechanical specifications Cheetah 15K.5 FC Product Manual, Rev. F Drive error recovery procedures Defect and error managementDrive internal defects/errors Page Background Media Scan FC-AL system errors Idle Read After Write Media Pre-ScanDeferred Auto-Reallocation Cooling InstallationDrive ID/option selection Drive orientation Air flow Drive mounting Grounding Cheetah 15K.5 FC Product Manual, Rev. F Interface requirements FC-AL featuresFibre Channel link service frames Link services supported Type of frame FC Scsi FCP response codes Function name Response code Fibre Channel task management functionsFibre Channel task management responses NPort login Plogi payload Bytes Fibre Channel port login Process Login Plri payload Fibre Channel port login acceptFibre Channel Process Login NPort Login Accept ACC payload Bytes Fabric Login Flogi payload Bytes Fibre Channel Process Login AcceptFibre Channel fabric login Process Login Accept ACC payload Bytes Fabric Login Accept ACC payload Bytes Fibre Channel fabric accept login Option Supported Dual port supportFibre Channel Arbitrated Loop options FC-AL options supported Supported commands Command code Command name Scsi commands supported Verify error recovery page 07h Cheetah 15K.5 FC Product Manual, Rev. F Temperature page 0Dh Cheetah 15K.5 FC inquiry data Bytes Data hex Mode Sense dataInquiry data Page Mmode Sense 10 Byte Header Data Mode Sense 10 Byte Header Data 00 ae 00 10 00 00 00 08 08 8b b9 98 00 00 02 Miscellaneous status Miscellaneous operating features and conditionsMiscellaneous features Supported Feature or condition Physical description Physical characteristicsFC-AL physical interface Pin descriptions Connector requirementsElectrical description FC-AL transmitters and receivers FC-SCA pin descriptions Pin Signal name Signal typePin Signal name Signal type Fault LED Out Power Motor start controls Enable port bypass signalsActive LED Out 11 SEL6 through SEL0 ID lines Parallel Enclosure Services Interface ESI Hex Dec SettingArbitrated loop physical address Alpa values Device control codes Signal characteristicsTTL input characteristics FC Differential input LED driver signalsFC Differential output Receive eye diagram Eye diagram data values Link rate GHz Cheetah 15K.5 FC Product Manual, Rev. F Technical Support Seagate Technology support servicesInternet Presales Support Data Recovery Services Call Center Toll-free Direct dial Warranty ServiceData Recovery Services Authorized Service Centers Numerics Index FAN Flogi Plogi Page See also cooling