Seagate ST3400071FC, ST3500071FC manual Drive Self Test DST, DST Failure Definition, Implementation

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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 text

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.

5.2.6.2Implementation

This section provides all of the information necessary to implement the DST function on this drive.

5.2.6.2.1State of the drive prior to testing

The drive must be in a ready state before issuing the Send Diagnostic command. There are multiple reasons why a drive may not be ready, some of which are valid conditions, and not errors. For example, a drive may be in process of doing a format, or another DST. It is the responsibility of the host application to determine the “not ready” cause.

While not technically part of DST, a Not Ready condition also qualifies the drive to be returned to Seagate as a failed drive.

A Drive Not Ready condition is reported by the drive under the following conditions:

•Motor will not spin

•Motor will not lock to speed

•Servo will not lock on track

•Drive cannot read configuration tables from the disc

In these conditions, the drive responds to a Test Unit Ready command with an 02/04/00 or 02/04/03 code.

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NL35 Series FC Product Manual, Rev. D

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Contents NL35 Series FC ST3500071FC ST3400071FCPage Contents Defect and error management InstallationInterface requirements Seagate Technology support services NL35 Series FC Product Manual, Rev. D List of Figures NL35 Series family disc driveViii NL35 Series FC Product Manual, Rev. D Scope NL35 Series family disc driveNL35 Series FC Product Manual, Rev. D Electromagnetic compatibility Applicable standards and reference documentationStandards Electromagnetic susceptibilityElectromagnetic compliance Environmental protectionReference documents Fibre Channel Interface ManualNL35 Series FC Product Manual, Rev. D General description Standard features Reliability Media descriptionPerformance Formatted capacitiesUser-installed accessories Factory-installed accessoriesFactory-installed options Programmable drive capacitySeek performance characteristics Performance characteristicsInternal drive characteristics Access timeGeneralized performance characteristics GHzStart/stop time Prefetch/multi-segmented cache controlCache operation Caching write data Prefetch operationPage NL35 Series FC Product Manual, Rev. D Reliability specifications Error ratesUnrecoverable errors Reliability and serviceRecoverable Errors Seek errorsPreventive maintenance Mean Time Between Failure MtbfHot plugging the drive Performance impact 4 S.M.A.R.TControlling S.M.A.R.T MillisecondsThermal monitor Temperature Log page 0DhPredictive failures Parameter Code DescriptionDST Failure Definition State of the drive prior to testingDrive Self Test DST ImplementationShort test Function Code 001b Invoking DSTShort and extended tests Extended test Function Code 010bShipping Product warrantyAbort Product repair and return informationDC power requirements Physical/electrical specificationsAC power requirements ST3500071FC/ST3400071FC DC power requirementsGeneral DC power requirement notes Power sequencingConducted noise immunity Power dissipation Relative humidity TemperatureEnvironmental limits Effective altitude sea levelPackage size Packaged/product weight Drop height Shock and vibrationShock Recommended mounting Air cleanliness VibrationTypical idle mode sound power ST3500071FC and ST3400071FC Corrosive environmentAcoustics Mechanical specifications Mounting configuration dimensionsNL35 Series FC Product Manual, Rev. D Defect and error management Drive internal defects/errorsDrive error recovery procedures 108.3 FC-AL system errors Background Media ScanMedia Pre-Scan NL35 Series FC Product Manual, Rev. D Installation Drive ID/option selectionDrive orientation Cooling Air flowDrive mounting GroundingNL35 Series FC Product Manual, Rev. D Link services supported FC-AL featuresFibre Channel link service frames Type of frame Link serviceFibre Channel task management responses Fibre Channel task management functionsFibre Channel Scsi FCP task management functions FC Scsi FCP response codesFibre Channel port login NPort login Plogi payloadBytes Fibre Channel Process Login Fibre Channel port login acceptNPort Login Accept ACC payload Process Login Plri payloadFibre Channel fabric login Fibre Channel Process Login AcceptProcess Login Accept ACC payload Fabric Login Flogi payloadFibre Channel fabric accept login Fabric Login Accept ACC payloadFC-AL options supported Dual port supportFibre Channel Arbitrated Loop options Option SupportedScsi commands supported Supported commandsCommand code Supported Command name Supported commands Supported commands Supported commands Supported commands NL35 Series inquiry data Mode Sense dataInquiry data Bytes Data hexPage DEF CHG NL35 Series FC Product Manual, Rev. D Supported Feature or condition Miscellaneous operating features and conditionsMiscellaneous features Miscellaneous statusPhysical characteristics FC-AL physical interfacePhysical description Connector requirements Part description Positions Part number FeaturesElectrical description Pin Signal name Signal type Pin descriptionsFC-SCA pin descriptions Power Fault LED OutFC-AL transmitters and receivers Active LED Out Enable port bypass signalsNormal command activity LED status Active LED Out conditionsMotor start controls Motor start control signalsParallel Enclosure Services Interface ESI 11 SEL6 through SEL0 ID linesSetting Arbitrated loop physical address Alpa valuesHex Dec Signal characteristics Differential Pecl output characteristics LED driver signalsLED drive signal Differential Pecl input characteristicsEye diagram data values Link rate GHzNL35 Series FC Product Manual, Rev. D Presales Support Seagate Technology support servicesInternet Technical SupportWarranty Service Data Recovery Services Authorized Service CentersData Recovery Services Call Center Toll-free Direct dial Index NumericsFAN Flogi Plogi Page See also cooling
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