Disk Drive Operation, Head / Disk Assembly HDA | Samsung M9T

CHAPTER 5 DISK DRIVE OPERATION

This chapter describes the operation of the Spinpoint M9T hard disk drive functional subsystems. It is intended as a guide to the operation of the drive, rather than a detailed theory of operation.

5.1Head / Disk Assembly (HDA)

The Spinpoint M9T hard disk drive consists of a mechanical sub-assembly and a printed circuit board assembly (PCBA), as shown in Figure 5-1. This section describes the mechanism of the drive.

The head / disk assembly (HDA) contains the mechanical sub-assemblies of the drive, which are sealed between the aluminum-alloy base and cover. The HDA consists of the base casting assembly (which includes the DC spindle motor assembly), the disk stack assembly, the head stack assembly, and the rotary voice coil motor assembly (which includes the actuator latch assembly). The HDA is assembled in a clean room. These subassemblies cannot be adjusted or field repaired.

CAUTION: To avoid contamination in the HDA, never remove or adjust its cover and seals. Disassembling the HDA voids your warranty.

The Spinpoint M9T hard disk drive models and capacities are distinguished by the number of heads and disks. The ST2000LM003, ST2000LM004 and ST2000LM006 have three (3) disks and six (6) read/write heads. The ST1500LM006, ST1500LM007 and ST1500LM010 have three (3) disks and five/six (5/6) read/write heads.

5.1.1Base Casting Assembly

A one piece, aluminum-alloy base casting provides a mounting surface for the drive mechanism and PCBA. The base casting also serves as the flange for the DC spindle motor assembly. A gasket provides a seal between the base and cover castings that enclose the drive mechanism.

5.1.2DC Spindle Motor Assembly

The DC spindle motor assembly consists of the brush-less three-phase motor, spindle bearing (FDB) assembly, disk mounting hub, and a labyrinth seal. The entire spindle motor assembly is completely enclosed in the HDA and integrated to the base casting. The labyrinth seal prevents bearing lubricant from coming out into the HDA. The motor rotates the spindle shaft at 5400 rpm.

Spinpoint M9T Product Manual REV 1.0

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Samsung M9T manual Disk Drive Operation, Head / Disk Assembly HDA, Base Casting Assembly, DC Spindle Motor Assembly

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 Reference Description Introduction Key Features Standards and Regulations Hardware Requirements Specifications Specification Summary Physical Specifications Logical Configurations Performance Specifications Power Requirements Power consumptionPower consumption Rated Linear Shock 1/2 sine pulse Environmental SpecificationsEnvironmental Specifications Rotational Shock Reliability Specifications Installation Space Requirements Unpacking Instructions Mounting Mounting Dimensions Orientation Sata Connectivity Cable ConnectorsVentilation Computer mainboard or Serial ATA host adapter Power Management SATA-Bus Interface Connector HDD Power, Sata Interface, and Factory Jumper Connector Drive Installation DC Power Connector and SATA-Bus Interface Cable Connections DC Spindle Motor Assembly Head / Disk Assembly HDABase Casting Assembly Disk Drive Operation Exploded Mechanical View Voice Coil Motor and Actuator Latch Assemblies Disk Stack AssemblyHead Stack Assembly Air Filtration System Disk Controller Digital Signal Process and Interface ControllerDrive Electronics DDR Host Interface Control Block Buffer Control Block Frequency Synthesizer Disk Control BlockDisk Ldpc Control Block Time Base Generator Power ManagementRead/Write IC Automatic Gain Control Analog Anti-Aliasing Low Pass Filter Analog to Digital Converter ADC and FIR Read Channel Servo SystemRead and Write Operations Read Caching Firmware FeaturesWrite Channel Write Caching Smart Defect ManagementAutomatic Defect Allocation 6 APM Sata II Interface Sata Terminology Spinpoint M9T Product Manual REV Physical Interface Signal Summary Signal Descriptions Control Block Register Descriptions When read When written2 I/O Register Address Registers Command Block Register Descriptions Command Register Ex F7h Device Register Ex F6h Status Register Ex F7h Staggered Spin-up Disable Control Sata II Feature SETDevice Activity Signal Auto-Activate in DMA Setup FIS Phy Event Counters Software Settings Preservation Sata Power Management Command Code Parameters ATA Command DescriptionsCommand Table Smart Device Configuration Overlay B1h Command DescriptionsCheck Power Mode E5h Download Micro Code 92h Device Configuration Identify data structure Word Content Flush Cache E7h, EAh extended Execute Device Diagnostics 90hDiagnostic Codes Format Track 50h Content Description Identify Device information =the fields reported in word 88 are valid EXT =Media Card Pass Through command feature set supported Word Content Description WWN Idle Immediate E1h Automatic Standby Timer PeriodsIdle E3h Read Buffer E4h Initialize Device Parameters 91hNOP 00h Read DMA C8h, 25h extended Read 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 F4h Security Set Password data content Security Set Password F1hSecurity Erase Unit Password Word Content Security Freeze Lock F5h Seek 7xh Set Features EFhSecurity Unlock F2h 11 Set Features Register Definitions 12 Transfer Mode Values Set Max Address F9h, 37h extended Set Multiple Mode C6h13 Set Max Feature Register Values Sleep E6h Smart enable/disable attribute auto-save D2h 14 Smart Feature Registers ValuesSmart disable operations D9h Smart B0h Smart enable operations D8h Smart execute off-line immediate D4h Smart read data D0h 15 Device Smart Data Structure Byte Bit Name Description 16 Smart Attribute Status Flags 17 Smart Attribute Data List 18 Off-line Data Collection Status Values Self-test execution status byte 19 Self-test Execution Status Values Smart 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 61h Write Multiple Command C5h, 39h extended Write Sectors 30h, 34h extended Spinpoint 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