Maxtor 51536H2, 52049H3, 53073H4, 546106 specifications A.R.T. CommandSet, Key Register

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INTERFACE COMMANDS

S.M.A.R.T. CommandSet

Execute S.M.A.R.T.

The Self-Monitoring Analysis and Reporting Technology (S.M.A.R.T.) command has been implemented to improve the data integrity and data availability of hard disk drives. In some cases, a S.M.A.R.T. capable device will predict an impending failure with sufficient time to allow users to backup their data and replace the drive before data loss or loss of service. In addition to S.M.A.R.T., DiamondMax drives support DST and all of its options.

The S.M.A.R.T. sub-commands (listed below) comprise the ATA S.M.A.R.T. feature set that provide access to S.M.A.R.T. attribute values, attribute thresholds and other logging and reporting information. Prior to writing a S.M.A.R.T. command to the device’s command register, key values must be written by the host into the device’s Cylinder Low and Cylinder High registers, or the command will be aborted. For any S.M.A.R.T. sub-command, if a device register is not specified as being written with a value by the host, then the value in that register is undefined and will be ignored by the device.

The key values are:

Key

Register

4Fh

Cylinder Low (1F4h)

C2h

Cylinder High (1F5h)

The S.M.A.R.T. sub-commands use a single command code (B0h) and are differentiated from one another by the value placed in the Features register. In order to issue a command, the host must write the sub- command-specific code to the device’s Features register before writing the command code to the command register. The sub-commands and their respective codes are:

D0h

S.M.A.R.T. Read Attribute Value

 

This feature returns 512 bytes of attribute information to the host.

D1h

S.M.A.R.T. Read Attribute Thresholds

 

This feature returns 512 bytes of warranty failure thresholds to the host.

D2h

Enable/Disable Autosave

 

To enable this feature, set the sector count register to F1h (enable) or 0 (disable). Attribute values

 

are automatically saved to non-volatile storage on the device after five minutes of idle time and

 

before entering idle, sleep or standby modes. This feature is defaulted to “enabled” when

 

S.M.A.R.T. is enabled via the S.M.A.R.T. Enable Operations commands. The autosave feature

 

will not impact host system performance and does not need to be disabled.

D3h

S.M.A.R.T. Save Attribute Value

 

This feature saves the current attribute values to non-volatile storage.

D4h

Perform Off-Line Data Collection/DST

 

Data is collected from random seeks, timed pattern seek times and head margin tests. Supports

 

captive long and short; and non-captive long and short.

D5h

S.M.A.R.T. Read Log Sector

 

Allows the host to read S.M.A.R.T. error log and host vendor-specific sectors.

D6h

S.M.A.R.T. Write Log Sector

 

Allows the host to write S.M.A.R.T. error log and host vendor-specific sectors.

D8h

Enable S.M.A.R.T.

D9h

Disable S.M.A.R.T.

DAh

S.M.A.R.T. Return Status

 

This feature allows the host to assess the status of a S.M.A.R.T. capable device by comparing all

 

saved attribute values with their corresponding warranty failure thresholds. If no thresholds are

 

exceeded, the drive is declared to have a positive health status. If any warranty failure threshold is

 

exceeded, the drive is declared to have a negative health status. Executing this sub-command

 

results in all attribute values being saved to non-volatile storage on the device.

DBh

Enable/Disable Automatic Off-Line

 

To enable this feature, set the Sector Count register to F1h or 0 to disable.

7 – 15

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Contents Corporate Headquarters REV EC N O SEC Tion Desc Ription ATE Before You Begin U T I O NContents Product Specifications Handling and InstallationHost Software Interface Interface CommandsAT Interface Description Service and Support GlossaryFigures Introduction MaxtorCorporationManualOrganization AbbreviationsConventions KeyFeatures Product DescriptionModel S SP T MAX LB a Apac IT Y Product FeaturesFunctional / Interface CacheManagement MajorHDAComponents CylinderLimitationJumperDescription SubsystemConfigurationJumper Location / Configuration ProductSpecifications DriveConfigurationPerformanceSpecifications ModelsandCapacitiesPhysicalDimensionsmaximum Aram E TE R Stan D ARD ME T RICPowerRequirements PowerModeDefinitionsEPA Energy Star Compliance EnvironmentalLimitsParam E TE R OP ER AT ING ON- OPE R AT ING ReliabilitySpecificationsShock and Vibration SafetyRegulatoryCompliance EMC/EMIElectro-StaticDischargeESD HandlingandInstallationHardDriveHandlingPrecautions UnpackingandInspection Multi-pack Shipping ContainerPhysicalInstallation RepackingBefore You Begin Hook upSet up Start upInterfaceConnector ATInterfaceDescriptionPinDescriptionSummary PIN IGN ALPIN Name Signal Name Signal Desc Ription Pin Description TableIM in G Paramet ERS Mode PIO TimingImin G Paramet ERS Mode DMATimingUltra DMA Timing ModeSustained Ultra DMA Data In Burst Device Terminating an Ultra DMA Data In Burst Initiating an Ultra DMA Data Out Burst Device Pausing an Ultra DMA Data Out Burst Device Terminating an Ultra DMA Data Out Burst POR T EAD WR ITE HostSoftwareInterfaceTask File Registers Conten TS LBA Bits CommandRegister Summary M M a N D N a M E M M a N D code PA R a M E T E R S U S E DControl Diagnostic Registers Reset and Interrupt Handling InterfaceCommands ReadCommands Read DMA WriteCommands Write Multiple LE VE L ModeSet/CheckCommandsVAL UE DES C RIP Tion VAL UE Omman D PowerModeCommands Timer VAL UE TIME-OUT PeriodSleep Mode InitializationCommands Or D ENT Desc RiptionOr D 15- 10, as c urrently defined Initialize Drive Parameters Seek,FormatandDiagnosticCommands ER ROR Code Desc RiptionA.R.T. CommandSet Key RegisterServiceandSupport ServicePolicyNoQuibbleService SupportFrom Dial Accesstime GlossaryCorrectableerror Fetch Landingzoneorlzone Physicalsector Softerror
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