Seagate ST300MM0026, ST9600204FC manual Drive Self Test DST, DST failure definition, Implementation

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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 1: 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.

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.

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Contents ST9600204FC ST9450404FC Savvio 10K.4 FCRev. a 03/26/10 Initial release Revision historyContents Installation Seagate Technology support services Savvio 10K.4 FC Product Manual, Rev. a Scope Electromagnetic susceptibility Standards, compliance and reference documentsStandards Electromagnetic compatibilityEuropean Union Restriction of Hazardous Substances RoHS Ncits TR-19 Reference documentsGeneral description Media description Standard featuresFormatted capacities PerformanceReliability Programmable drive capacity Factory-installed optionsUser-installed accessories Seek performance Performance characteristicsInternal drive characteristics Access timePrefetch/multi-segmented cache control Format command execution time minutesGeneral performance characteristics Start/stop timeCache operation Prefetch operation Caching write dataUnrecoverable Errors Reliability specificationsError rates Recoverable ErrorsPreventive maintenance Reliability and serviceSeek errors Interface errorsPerformance impact 4 S.M.A.R.TControlling S.M.A.R.T Thermal monitor Reporting controlDetermining rate Predictive failuresDST failure definition State of the drive prior to testingTemperature Log Page 0Dh Drive Self Test DSTExtended test Function Code 010b Invoking DSTShort and extended tests Short test Function Code 001bAbort Product warrantyPowerChoice modes Physical/electrical specificationsPowerChoiceTM power management AC power requirements DC power requirements for ST9600204FC model 2Gb 4Gb Amps DC power requirementsDC power requirements for ST9450404FC model 2Gb 4Gb Amps Conducted noise immunity General DC power requirement notesPower sequencing Current profiles Savvio 10K.4 FC Product Manual, Rev. a ST9600204FC Power dissipationST9450404FC Relative humidity Temperature a. OperatingEnvironmental limits Shock Effective altitude sea level a. OperatingShock and vibration Recommended mounting Package size Packaged/product weight Drop heightCorrosive environment Air cleanlinessVibration a. Operating-normal AcousticsChina Restriction of Hazardous Substances RoHS Directive Mounting configuration dimensions Mechanical specificationsDrive error recovery procedures Defect and error managementDrive internal defects/errors 77.87 Media Pre-Scan FC-AL system errorsBackground Media Scan Idle Read After Write Deferred Auto-ReallocationCooling InstallationDrive ID/option selection Drive orientationAir flow Drive mountingGrounding Interface requirements FC-AL featuresFibre Channel link service frames Link services supported Type of frameFC 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 loginProcess Login Plri payload Fibre Channel port login acceptFibre Channel Process Login NPort Login Accept ACC payload BytesFabric Login Flogi payload Bytes Fibre Channel Process Login AcceptFibre Channel fabric login Process Login Accept ACC payload BytesFabric Login Accept ACC payload Bytes Fibre Channel fabric accept loginOption Supported Dual port supportFibre Channel Arbitrated Loop options FC-AL options supportedSupported commands Command code Command name Scsi commands supportedVerify error recovery page 07h Savvio 10K.4 FC Product Manual, Rev. a Temperature page 0Dh Savvio 10K.4 FC inquiry data Bytes Data hex Mode Sense dataInquiry data Page Mode Data Header 34 65 f8 70 00 00 02 Supported Feature or condition Miscellaneous operating features and conditionsPhysical description Physical characteristicsFC-AL physical interface Pin descriptions Connector requirementsElectrical description FC-AL transmitters and receivers FC-SCA pin descriptions Pin Signal name Signal typeFault LED Out PowerMotor start controls Enable port bypass signalsActive LED Out 11 SEL6 through SEL0 ID lines Parallel Enclosure Services Interface ESIAlpa SEL ID 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 Web Seagate Technology support servicesWarranty Support Direct.seagate.com Spp.seagate.com Presales Support Technical Support Warranty ServiceData Recovery Services Authorized Service Centers Data Recovery Services Call Center Toll-free Direct dialSavvio 10K.4 FC Product Manual, Rev. a Index FCP Flogi Plogi Page See also cooling Page Seagate Technology LLC
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