Samsung M9T manual Defect Management, Automatic Defect Allocation, Smart, 6 APM

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5.5.3Defect Management

The Spinpoint M9T hard disk drive media is scanned for defects. After defect scanning, the defective sectors are saved in the defect list. A defect encountered in the manufacturing process is slipped to the next physical sector location. All logical sector numbers are pushed down to maintain a sequential order of data. The read/write operation can “slip” over the defective sectors so that the only performance impact is idle time.

5.5.4Automatic Defect Allocation

The automatic defect allocation feature automatically maps out defective sectors encountered during read sector or write sector operations. These types of defective sectors are typically caused by grown defects. During write operations, if write errors are encountered, all sectors within the target servo frame are mapped out. Original data is transferred and written into designated reserved sector areas determined by the HDD firmware.

5.5.5SMART

The intent of Self-monitoring, Analysis and Reporting Technology (SMART) is to protect user data and to minimize the likelihood of unscheduled system downtime that may be caused by unpredictable degradation and/or device fault. By monitoring and storing critical performance and calibration parameters, SMART devices attempt to predict the likelihood of near-term degradation or fault condition. Providing the host system knowledge of a negative reliability condition allows the host system to warn the user of the impending risk of a data loss and advise the user of appropriate action.

5.5.6APM

The Automatic Power Management (APM) feature set is an optional feature set that allows the host to select a power management level. The power management level is specified using a scale from the lowest power consumption setting to the maximum performance level. Device performance may increase with increasing power management levels. Device power consumption may increase with increasing power management levels. This feature is enabled by the Set Features command.

Spinpoint M9T Product Manual REV 1.0

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Contents M9T Product Manual Page Table of Contents Iii Read Fpdma Queued 60h Read Log Extended 2Fh Read Long 22h Table of Tables Manual Organization ScopeUser Definition Sata ReferenceDescription IntroductionKey Features Standards and Regulations Hardware RequirementsSpecifications Specification SummaryPhysical Specifications Logical ConfigurationsPerformance Specifications Power Requirements Power consumptionPower consumption RatedLinear Shock 1/2 sine pulse Environmental SpecificationsEnvironmental Specifications Rotational ShockReliability Specifications Installation Space RequirementsUnpacking Instructions MountingMounting Dimensions OrientationSata Connectivity Cable ConnectorsVentilation Computer mainboard or Serial ATA host adapter Power ManagementSATA-Bus Interface Connector HDD Power, Sata Interface, and Factory Jumper ConnectorDrive Installation DC Power Connector and SATA-Bus Interface Cable ConnectionsDC Spindle Motor Assembly Head / Disk Assembly HDABase Casting Assembly Disk Drive OperationExploded Mechanical View Voice Coil Motor and Actuator Latch Assemblies Disk Stack AssemblyHead Stack Assembly Air Filtration SystemDisk Controller Digital Signal Process and Interface ControllerDrive Electronics DDR Host Interface Control Block Buffer Control BlockFrequency Synthesizer Disk Control BlockDisk Ldpc Control Block Time Base Generator Power ManagementRead/Write IC Automatic Gain ControlAnalog Anti-Aliasing Low Pass Filter Analog to Digital Converter ADC and FIRRead Channel Servo SystemRead and Write Operations Read Caching Firmware FeaturesWrite Channel Write Caching Smart Defect ManagementAutomatic Defect Allocation 6 APMSata II Interface Sata TerminologySpinpoint M9T Product Manual REV Physical Interface Signal Summary Signal DescriptionsControl Block Register Descriptions When read When written2 I/O Register Address RegistersCommand Block Register Descriptions Command Register Ex F7h Device Register Ex F6hStatus Register Ex F7h Staggered Spin-up Disable Control Sata II Feature SETDevice Activity Signal Auto-Activate in DMA Setup FISPhy Event Counters Software Settings Preservation Sata Power ManagementCommand Code Parameters ATA Command DescriptionsCommand Table Smart Device Configuration Overlay B1h Command DescriptionsCheck Power Mode E5h Download Micro Code 92hDevice Configuration Identify data structure Word Content Flush Cache E7h, EAh extended Execute Device Diagnostics 90hDiagnostic Codes Format Track 50hContent Description Identify Device information=the fields reported in word 88 are valid EXT =Media Card Pass Through command feature set supported Word Content Description WWNIdle Immediate E1h Automatic Standby Timer PeriodsIdle E3h Read Buffer E4h Initialize Device Parameters 91hNOP 00h Read DMA C8h, 25h extendedRead Long 22h Read Multiple Command C4h, 29h extendedRead Log Extended 2Fh Read Verify Sectors 40h, 41h extended Read Native Max Address F8h, 27h extendedRead Sectors 20h, 24h extended Security Erase Prepare F3h Security Disable Password F6hRecalibrate 10h Security Erase Unit F4hSecurity Set Password data content Security Set Password F1hSecurity Erase Unit Password Word Content Security Freeze Lock F5hSeek 7xh Set Features EFhSecurity Unlock F2h 11 Set Features Register Definitions 12 Transfer Mode ValuesSet Max Address F9h, 37h extended Set Multiple Mode C6h13 Set Max Feature Register Values Sleep E6hSmart enable/disable attribute auto-save D2h 14 Smart Feature Registers ValuesSmart disable operations D9h Smart B0hSmart enable operations D8h Smart execute off-line immediate D4hSmart read data D0h 15 Device Smart Data StructureByte Bit Name Description 16 Smart Attribute Status Flags17 Smart Attribute Data List 18 Off-line Data Collection Status ValuesSelf-test execution status byte 19 Self-test Execution Status ValuesSmart write log sector D6h Smart read log sector D5hSmart return status DAh Write DMA CAh, 35h extended Standby Immediate E0hWrite Buffer E8h Write Fpdma Queued 61hWrite Multiple Command C5h, 39h extended Write Sectors 30h, 34h extendedSpinpoint M9T Product Manual REV General Information MaintenanceMaintenance Precautions HDD handling guide -Please handle HDD by side surfaces Service and Repair HDD handling guide Prevent Shocks