Seagate ST3450657SS manual Parameter Code Description, Drive Self Test DST, DST failure definition

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The current algorithm implements two temperature trip points. The first trip point is set at 68°C which is the maximum temperature limit according to the drive specification. The second trip point is user-selectable using the Log Select command. The reference temperature parameter in the temperature log page (see Table 2) can be used to set this trip point. The default value for this drive is 68°C, however, you can set it to any value in the range of 0 to 68°C. If you specify a temperature greater than 68°C in this field, the temperature is rounded down to 68°C. A sense code is sent to the host to indicate the rounding of the parameter field.

Table 2 Temperature Log Page (0Dh)

Parameter Code

Description

 

 

0000h

Primary Temperature

 

 

0001h

Reference Temperature

 

 

5.2.6Drive Self Test (DST)

Drive Self Test (DST) is a technology designed to recognize drive fault conditions that qualify the drive as a failed unit. DST validates the functionality of the drive at a system level.

There are two test coverage options implemented in DST:

1.Extended test

2.Short test

The most thorough option is the extended test that performs various tests on the drive and scans every logical block address (LBA) of the drive. The short test is time-restricted and limited in length—it does not scan the entire media surface, but does some fundamental tests and scans portions of the media.

If DST encounters an error during either of these tests, it reports a fault condition. If the drive fails the test, remove it from service and return it to Seagate for service.

5.2.6.1DST failure definition

The drive will present a “diagnostic failed” condition through the self-tests results value of the diagnostic log page if a functional failure is encountered during DST. The channel and servo parameters are not modified to test the drive more stringently, and the number of retries are not reduced. All retries and recovery processes are enabled during the test. If data is recoverable, no failure condition will be reported regardless of the number of retries required to recover the data.

The following conditions are considered DST failure conditions:

•Seek error after retries are exhausted

•Track-follow error after retries are exhausted

•Read error after retries are exhausted

•Write error after retries are exhausted

Recovered errors will not be reported as diagnostic failures.

CHEETAH 15K.7 SAS PRODUCT MANUAL, REV. F

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Contents Standard models Self-Encrypting Drive models SED Fips 140-2 modelsPage Contents Defect and Error Management InstallationAbout Fips About SELF-ENCRYPTING Drives Interface RequirementsCheetah 15K.7 SAS Product MANUAL, REV. F III Seagate Technology Support Services SED ScopeFips 140-2 L Evel Compliance STANDARDS, Compliance and Reference DocumentsStandards Australian C-Tick Korean KCCTaiwanese Bsmi European Union Restriction of Hazardous Substances RohsGeneral Description Performance Standard FeaturesMedia Description FACTORY-INSTALLED Options ReliabilityFormatted Capacities ST3600057SS ST3450857SS ST3300657FCPerformance Characteristics Internal Drive CharacteristicsAccess time Format command execution time minutesPREFETCH/MULTI-SEGMENTED Cache Control General performance characteristicsSTART/STOP Time Cache Operation Caching write data Prefetch operationReliability and Service Reliability SpecificationsError Rates Preventive maintenance Hot plugging the drive4 S.M.A.R.T Controlling S.M.A.R.TPerformance impact MillisecondsReporting control Determining rateTemperature Log Page 0Dh Parameter Code DescriptionDrive Self Test DST DST failure definitionState of the drive prior to testing ImplementationInvoking DST Short and extended testsProduct warranty Log page entriesAbort ShippingPHYSICAL/ELECTRICAL Specifications AC Power RequirementsDC Power Requirements 600 GB DC power requirements450 GB DC power requirements 300 GB DC power requirements Current profiles Power sequencingConducted noise immunity Typical 450GB current profiles Power Dissipation Environmental Limits Temperature a. Operating300GB model Relative humidity Effective altitude sea level a. OperatingShock and vibration ShockVibration Recommended mountingAir cleanliness AcousticsCorrosive environment RoHS compliance statementMechanical Specifications Units of Measure mm inchesSeagate Enterprise SED PurposeValidation Program Controlled Access About SELF-ENCRYPTING DrivesData Encryption Random Number Generator RNGAuthenticated Firmware Download Power RequirementsSupported Commands Drive LockingDrive Error Recovery Procedures Defect and Error ManagementDrive Internal DEFECTS/ERRORS SAS System Errors Read and write retry count maximum recovery timesBackground Media Scan Media PRE-SCANDeferred AUTO-REALLOCATION Idle Read After WriteCooling InstallationDrive Orientation Drive Mounting GroundingSAS Features Interface RequirementsTask management functions Task management responsesScsi Commands Supported Commands supported by Cheetah 15K.7 SAS family drivesCommands supported by Cheetah 15K.7 SAS family drives Commands supported by Cheetah 15K.7 SAS family drives Cheetah 15K.7 inquiry data Mode Sense dataInquiry data Cheetah 15K.7 SAS Product MANUAL, REV. F 11.3.2.1 600GBmodel Mode Sense data 11.3.2.2 450GB model Mode Sense data 11.3.2.3 300GB model Mode Sense data Miscellaneous Operating Features and Conditions Supported Feature or conditionMiscellaneous features SAS physical interfaceDatum B This Area Physical characteristics Connector requirementsElectrical description Pin descriptionsPower Signal CharacteristicsSAS transmitters and receivers Ready LED OutDifferential signals SAS-2 Specification ComplianceBPS Additional InformationIndex Page SAS See also cooling Seagate Technology LLC Americas
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