Hitachi HDS721010CLA632, HCS721050CLA382, HCS721032CLA382, A7K2000 Device Configuration Overlay B1h

Page 110

11.3Device Configuration Overlay (B1h)

 

Command Block Output Registers

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Register

 

 

7

6

5

4

3

2

1

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Data

 

 

-

-

-

-

-

-

-

-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Feature

 

 

1

0

1

0

V

V

V

V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Sector Count

 

-

-

-

-

-

-

-

-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Sector Number

 

-

-

-

-

-

-

-

-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Cylinder Low

 

-

-

-

-

-

-

-

-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Cylinder High

 

-

-

-

-

-

-

-

-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Device/Head

 

 

-

-

-

D

-

-

-

-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Command

 

 

1

0

1

1

0

0

0

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Error Register

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7

6

 

5

 

 

4

3

 

 

2

1

 

 

0

CRC

UNC

 

0

 

IDN

0

 

ABT

T0N

 

 

AMN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

0

 

0

 

 

0

0

 

 

V

0

 

 

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Command Block Input Registers

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Register

 

 

7

6

5

4

 

3

2

1

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Data

 

 

 

 

-

 

-

-

-

 

-

-

-

-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Error

 

 

 

 

 

 

 

...See Below...

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Sector Count

 

 

V

V

V

V

V

V

V

V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Sector Number

 

-

 

-

-

-

 

-

-

-

-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Cylinder Low

 

 

V

V

V

V

V

V

V

V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Cylinder High

 

 

V

V

V

V

V

V

V

V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Device/Head

 

 

-

 

-

-

-

 

-

-

-

-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Status

 

 

 

 

 

 

 

...See Below...

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Status Register

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7

 

6

 

5

 

 

 

4

 

3

 

2

 

1

0

 

 

BSY

 

RDY

 

DF

 

 

DSC

DRQ

COR

IDX

ERR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

V

 

V

 

0

 

 

 

-

 

V

 

-

 

-

V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Table 71 Device Configuration Overlay Command (B1h)

Individual Device Configuration Overlay feature set commands are identified by the value placed in the Features register. The table below shows these Features register values.

Value

Command

 

 

C0h

DEVICE CONFIGURATION RESTORE

 

 

C1h

DEVICE CONFIGURATION FREEZE LOCK

 

 

C2h

DEVICE CONFIGURATION IDENTIFY

 

 

C3h

DEVICE CONFIGURATION SET

 

 

other

Reserved

 

 

Table 72 Device Configuration Overlay Features register values

11.3.1Device Configuration Restore (Subcommand C0h)

The Device Configuration Restore command disables any setting previously made by a Device Configuration Set command and returns the content of the Identify Device or Identify Packet Device command response to the original settings as indicated by the data returned from the execution of a Device Configuration Identify command.

Hitachi hard disk drive specifications

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Contents Hard Disk Drive Specification Copyright Hitachi Global Storage Technologies Table of contents Initialize Device Parameters 91h Security Disable Password F6hIdle Immediate E1h/95h Read Log Ext 2Fh11.33 Input Registers of SCT Data Transfer Using Smart Power supply generated ripple at drive power connectorCommand table for device lock operation 105 103104 107150 Access Time Array Entry Linearly Interpolated 156149 151Write Multiple FUA Ext Command CEh Selective self-test log data structureUltrastar CinemaStar IntroductionCapacity Type Cache Model# Type and Model#References GlossaryGeneral caution General features Part 1. Functional specification Actuator Head disk assemblyControl Electronics Default logical drive parameters Formatted capacity1TB model World Wide Name Assignment World Wide Name AssignmentMechanical positioning performance Cylinder allocation Drive organizationDrive Format Command overhead Performance characteristicsCommand overhead Mechanical positioning Single Track Seek Time Drive ready timeAverage latency Latency TimeMode transition times Operating mode descriptionsMode transition times Operating modesDefect flagging strategy Hitachi hard disk drive specifications Connector locationSignal connector Electrical interfacePlug Connector pin definition Signal Signal definitionInterface connector pins and I/O signals 2.1 TX+ / TX2.3 5V Precharge 2.4 12V PrechargeOut of band signalingSATA Parameter descriptionsEnvironment Temperature and humidityTemperature and humidity Corrosion test Atmospheric conditionPower supply current of 2 Disk model DC power requirementsPower supply current typical Input voltagePower supply generated ripple at drive power connector Power supply current of 1 Disk modelReliability Required Power-Off Sequence Mechanical specifications Physical dimensionsAll dimensions are in millimeters Bottom and side views with mounting hole locations Physical Dimensions Hole locationsConnector locations Connector locationsDrive mounting Heads unload and actuator lockRandom vibration Linear Vibration and shockOperating vibration Swept sine vibration LinearRandom vibration Nonoperating vibrationOperating shock Swept sine vibrationTrapezoidal shock wave Nonoperating shockNonoperating Rotational shock Sinusoidal shock waveIdentification labels Sound power levelsAcoustics Safety Tick Mark Electromagnetic compatibilityCE Mark Bsmi MarkPart 2. Interface Specification Terminology Check Power ModeDownload Comreset response time Streaming Commands Deviations From StandardCylinder High Register Command registerAlternate Status Register Alternate Status RegisterDevice Control Register Cylinder Low RegisterData Register Device Control RegisterDrive Address Register Drive Address RegisterDevice/Head Register Device/Head RegisterBit Definitions Icrce CRC Error RegisterError Register Sector Number Register Features RegisterSector Count Register Status Register Status RegisterPower On Reset POR Reset ResponseReset Response Soft Reset Software ResetDiagnostic Codes Diagnostic and Reset considerationsDefault Register Values Register InitializationLBA Addressing Mode Sector Addressing ModeLogical CHS Addressing Mode Power Management Commands Power Management FeaturePower Mode Standby timerInterface Capability for Power Modes Power conditionsSmart Function Self-test Error LogOff-line Read Scanning Device Unlocked mode Security Mode Feature SetSecurity mode Device Frozen modeUser Password setting PasswordMaster Password setting Device locked modeOperation from POR after User Password is set Usual OperationUser Password Lost Attempt limit for Security Unlock commandCommand Table Command Locked Mode Unlocked Mode Frozen ModeSecurity Erase Unit Executable Read Native Max Address F8h Set Max Address F9h Host Protected Area FeatureExample for operation In LBA mode Security extensions Write Cache Function Recovered read errors Non recovered write errorsNon recovered read errors Reassign FunctionPower-up in Standby feature set Advanced Power Management feature set APM12 48-bit Address Feature Set Streaming feature Set Streaming commandsStreaming Logs Sata Interface Power Management Sata Bist Built-in Self TestSoftware Setting Preservation Comreset Preservation RequirementsDevice Power Connector Pin 11 Definition Sata II Optional FeaturesAsynchronous Signal Recovery Counter Reset MechanismsIdentifier Mandatory Description Bits Optional Counter IdentifiersPhy Event Counter Identifiers Counter Definitions Identifier 000hRead LOG EXT Log Page 11h Read LOG EXT Log Page 11h data structure definitionIntroduction SCT Command Transport feature SetOverview Capability definitionSCT Command Nesting and intermingling with Standard commands ResetsIssue SCT Command Using Smart SCT Command ProtocolCommand Transport Output Registers of SCT Command Using SmartIssue SCT Command Using Write Log Ext Key Sector Format SCT Action Code ListKey Sector Format Action codes are defined in Table belowExtended Status Code Extended Status CodeData transfer Read/Write SCT Data Using SmartRead/Write SCT Data Using Read/Write Log Ext Intput Registers of SCT Status Request Using Smart SCT Status Request Using SmartSCT Status Request Using Read Log Ext Input Registers of SCT Status Request Using Read Log ExtFormat of SCT Status Response Current LBA of SCT command executinBackground. If there is no command Currently executing in the background, this479214 Byte275 Reserved 00h 511480 Byte32 Vendor Specific 205 Byte Reserved 00h 209206 Dword213210 Dword Data Format of SCT Status ResponseSCT Write Same Inputs SCT Command SetSCT Write Same action code 0002h SCT Write Same OutputsHitachi hard disk drive specifications Outputs for Error Error Recovery Control command Onputs Error Recovery Control command action code 0003hError Recovery Control command Inputs Feature Control command Outputs Feature Control Command action code 0004hFeature Control command Inputs Feature Code List Feature Code State DefinitionSCT Data Table command Outputs SCT Data Table Command action code 0005hSCT Data Table command Inputs Table IDByte Size Field Name Description Data Format of HDA Absolute Temperature History Table PIO Data In commands Hitachi hard disk drive specifications 100Hitachi hard disk drive specifications 101 PIO Data Out commandsNon-Data commands Hitachi hard disk drive specifications 102 DMA Data In commands and DMA Data Out commandsFirst-party DMA commands Protocol Command Code Binary Code Bit Hex Command SetHitachi hard disk drive specifications 103 Code Binary Code Bit Hex Hitachi hard disk drive specifications 104Protocol Command Command code Feature Command Subcommand Hex Register Command Set SubcommandHitachi hard disk drive specifications 105 Input Registers Hitachi hard disk drive specifications 106Output Registers Hitachi hard disk drive specifications 107 Check Power Mode E5h/98hCheck Power Mode Command E5h/98h Input Parameters From The DeviceHitachi hard disk drive specifications 108 Configure Stream 51hConfigure Stream Command 51h Hitachi hard disk drive specifications 109 Device Configuration Overlay Command B1h Device Configuration Overlay B1hDevice Configuration Restore Subcommand C0h Device Configuration Overlay Features register valuesDevice Configuration Set Subcommand C3h Device Configuration Freeze Lock Subcommand C1hDevice Configuration Identify Subcommand C2h Hitachi hard disk drive specifications 111Device Configuration Overlay Data structure Hitachi hard disk drive specifications 112DCO error information definition Hitachi hard disk drive specifications 113Download Microcode 92h Download Microcode Command 92hHitachi hard disk drive specifications 114 Hitachi hard disk drive specifications 115 Execute Device Diagnostic Command 90h Execute Device Diagnostic 90hDiagnostic Code Hitachi hard disk drive specifications 116Flush Cache E7h Flush Cache Command E7hHitachi hard disk drive specifications 117 Flush Cache Ext EAh Flush Cache Ext Command EAhHitachi hard disk drive specifications 118 Format Track 50h Format Track Command50hHitachi hard disk drive specifications 119 Cylinder High/Low Hitachi hard disk drive specifications 120Output Parameters To The Device Sector Number Format Unit F7h Format Unit Command F7hHitachi hard disk drive specifications 121 Identify Device ECh Identify Device Command EChHitachi hard disk drive specifications 122 Hitachi hard disk drive specifications 123 Identify device informationHitachi hard disk drive specifications 124 Hitachi hard disk drive specifications 125 Gen1 speed of 1.5GbpsHitachi hard disk drive specifications 126 Write CacheHitachi hard disk drive specifications 127 READ/WRITE DMA QueuedHitachi hard disk drive specifications 128 Hitachi hard disk drive specifications 129 Hitachi hard disk drive specifications 130 Reserved Stream Minimum Request Size XxxxHHitachi hard disk drive specifications 131 Current media serial number 0000H=Not supportedHitachi hard disk drive specifications 132 Idle E3h/97h Idle Command E3h/97hHitachi hard disk drive specifications 133 Hitachi hard disk drive specifications 134 Output Parameters To The DeviceIdle Immediate E1h/95h Idle Immediate Command E1h/95hHitachi hard disk drive specifications 135 Initialize Device Parameters 91h Initialize Device Parameters Command 91hHitachi hard disk drive specifications 136 Read Buffer E4h Read Buffer Command E4hHitachi hard disk drive specifications 137 Read DMAC8h/C9h Read DMA Command C8h/C9hHitachi hard disk drive specifications 138 Hitachi hard disk drive specifications 139 Output Parameters To The Device Sector CountRead DMA Ext 25h Read DMA Ext Command 25hHitachi hard disk drive specifications 140 Hitachi hard disk drive specifications 141 Read Fpdma Queued 60h Read Fpdma Queued Command 60hHitachi hard disk drive specifications 142 Hitachi hard disk drive specifications 143 Read Log Ext 2Fh Read Log Ext Command 2FhHitachi hard disk drive specifications 144 Sector Count Current Hitachi hard disk drive specifications 145Log Address Definition General Purpose Log Directory Hitachi hard disk drive specifications 146General Purpose Log Directory Error log index Extended Comprehensive Smart Error logError log version Extended Error log data structureHitachi hard disk drive specifications 148 Extended Error log data structureCommand data structure Error data structure Hitachi hard disk drive specifications 149Self-test log data structure revision number Device error countExtended Self-test log sector Self-test descriptor indexExtended Self-test log descriptor entry Hitachi hard disk drive specifications 151Extended Self-test log descriptor entry Hitachi hard disk drive specifications 152 Command ErrorCommand Error information Hitachi hard disk drive specifications 153 Read Stream Error logRead Stream Error Log Stream Error Log entry Hitachi hard disk drive specifications 154Hitachi hard disk drive specifications 155 Write Stream Error logWrite Stream Error Log Streaming Performance Parameters log Access Time Array Entry Linearly InterpolatedStreaming Performance log Sector Time Array Entry Linearly InterpolatedRead Multiple C4h Read Multiple Command C4hHitachi hard disk drive specifications 157 Read Multiple Ext 29h Read Multiple Ext Command 29hHitachi hard disk drive specifications 158 Hitachi hard disk drive specifications 159 Hitachi hard disk drive specifications 160 Read Native Max Address F8hHitachi hard disk drive specifications 161 Read Native Max Address Ext 27hHitachi hard disk drive specifications 162 Read Sectors 20h/21h Read Sectors Command 20h/21hHitachi hard disk drive specifications 163 Hitachi hard disk drive specifications 164 Read Sectors Ext 24h Read Sectors Ext Command 24hHitachi hard disk drive specifications 165 Hitachi hard disk drive specifications 166 Output Parameters To The Device Sector Count CurrentRead Stream DMA 2Ah Read Stream DMA Command 2AhHitachi hard disk drive specifications 167 Hitachi hard disk drive specifications 168 Hitachi hard disk drive specifications 169 Read Stream PIO 2Bh Read Stream PIO Command 2BhHitachi hard disk drive specifications 170 Hitachi hard disk drive specifications 171 Hitachi hard disk drive specifications 172 Ccto Error, bitRead Verify Sectors 40h/41h Read Verify Sectors Command 40h/41hHitachi hard disk drive specifications 173 Hitachi hard disk drive specifications 174 Read Verify Sectors Ext 42h Read Verify Sectors Ext Command 42hHitachi hard disk drive specifications 175 Hitachi hard disk drive specifications 176 Recalibrate 1xh Recalibrate Command 1xhHitachi hard disk drive specifications 177 Hitachi hard disk drive specifications 178 Security Disable Password F6hSecurity Disable Password Command F6h Password Information for Security Disable Password command Hitachi hard disk drive specifications 179Security Erase Prepare F3h Security Erase Prepare Command F3hHitachi hard disk drive specifications 180 Security Erase Unit F4h Security Erase Unit Command F4hHitachi hard disk drive specifications 181 Hitachi hard disk drive specifications 182 Erase Unit InformationSecurity Freeze Lock F5h Security Freeze Lock Command F5hHitachi hard disk drive specifications 183 Hitachi hard disk drive specifications 184 Security Set Password F1hSecurity Set Password Command F1h Security Set Password Information Hitachi hard disk drive specifications 185Security Unlock F2h Security Unlock Command F2hHitachi hard disk drive specifications 186 Hitachi hard disk drive specifications 187 Security Unlock InformationSeek 7xh Seek Command 7xhHitachi hard disk drive specifications 188 Sense Condition F0h Vendor specific for Cinemastar Sense Condition command F0hHitachi hard disk drive specifications 189 Input Parameters From The Device Sector CountHitachi hard disk drive specifications 190 Set Features EFhSet Features Command EFh Hitachi hard disk drive specifications 191 Advanced Power Management Set Transfer modeSerial ATA Feature Hitachi hard disk drive specifications 192Hitachi hard disk drive specifications 193 Low Power Idle modeLow RPM standby mode Set Maximum Host Interface Sector TimeSet Max Address F9h Hitachi hard disk drive specifications 194Set Max Address F9h Hitachi hard disk drive specifications 195 Set Max Set Password data contents Set Max Set Password Feature = 01hSet Max set Password Hitachi hard disk drive specifications 196Set Max Lock Set Max Lock Feature = 02hHitachi hard disk drive specifications 197 Set Max Unlock F9h Set Max Unlock Feature = 03hHitachi hard disk drive specifications 198 Set Max Freeze Lock F9h Set Max Freeze Lock Feature = 04hHitachi hard disk drive specifications 199 Set Max Address Ext 37h Set Max Address Ext Command 37hHitachi hard disk drive specifications 200 Hitachi hard disk drive specifications 201 Set Multiple C6h Set Multiple Command C6hHitachi hard disk drive specifications 202 Sleep E6h/99h Sleep Command E6h/99hHitachi hard disk drive specifications 203 Smart Function Set B0h Smart Function Set Command B0hHitachi hard disk drive specifications 204 Smart Read Attribute Thresholds Subcommand D1h Smart SubcommandSmart Read Attribute Values Subcommand D0h Smart Enable/Disable Attribute Autosave Subcommand D2hHitachi hard disk drive specifications 206 Smart Save Attribute Values Subcommand D3hSmart Execute Off-line Immediate Subcommand D4h Smart Enable Operations Subcommand D8h Smart Read Log Sector Subcommand D5hSmart Write Log Sector Subcommand D6h Hitachi hard disk drive specifications 207Smart Enable/Disable Automatic Off-Line Subcommand DBh Smart Disable Operations Subcommand D9hSmart Return Status Subcommand Dah Hitachi hard disk drive specifications 208Data Structure Revision Number Hitachi hard disk drive specifications 209Device Attributes Data Structure Device Attribute Data StructureIndividual Attribute Data Structure Hitachi hard disk drive specifications 210Individual Attribute Data Structure Attribute NameStatus Flag Definitions Bit Definition Hitachi hard disk drive specifications 211Off-Line Data Collection Status Bit 7 Automatic Off-Line Data Collection StatusOff-Line Data Collection Capability Hitachi hard disk drive specifications 212Self-test execution status Self-test failure check point Error Logging CapabilitySmart Capability Self-test completion timeAttribute ID Numbers Device Attribute Thresholds Data StructureIndividual Thresholds Data Structure Attribute ThresholdSmart Log Directory Hitachi hard disk drive specifications 215Smart Log Directory Smart summary error log sector Smart summary error log sectorSmart error log version Hitachi hard disk drive specifications 216Hitachi hard disk drive specifications 217 Error log data structureError log data structure Hitachi hard disk drive specifications 218 Self-test log data structure Hitachi hard disk drive specifications 219Self-test log data structure Hitachi hard disk drive specifications 220 Feature flagsSelective self-test feature flags Selective self-test log data structureHitachi hard disk drive specifications 221 Error ReportingSmart Error Codes Standby E2h/96h Standby Command E2h/96hHitachi hard disk drive specifications 222 Hitachi hard disk drive specifications 223 Standby Immediate E0h/94h Standby Immediate Command E0h/94hHitachi hard disk drive specifications 224 Write Buffer E8h Write Buffer Command E8hHitachi hard disk drive specifications 225 Write DMA Cah/CBh Write DMA Command Cah/CBhHitachi hard disk drive specifications 226 Hitachi hard disk drive specifications 227 Write DMA FUA Ext 3Dh Write DMA FUA Ext Command 3DhHitachi hard disk drive specifications 228 Hitachi hard disk drive specifications 229 Write DMA Ext 35h Write DMA Ext Command 35hHitachi hard disk drive specifications 230 Hitachi hard disk drive specifications 231 Write Fpdma Queued 61h Write Fpdma Queued Command 61hHitachi hard disk drive specifications 232 Hitachi hard disk drive specifications 233 Write Log Ext 3Fh Write Log Ext Command 3FhHitachi hard disk drive specifications 234 Hitachi hard disk drive specifications 235 Write Multiple C5h Write Multiple Command C5hHitachi hard disk drive specifications 236 Hitachi hard disk drive specifications 237 Write Multiple Ext 39h Write Multiple Ext Command 39hHitachi hard disk drive specifications 238 Hitachi hard disk drive specifications 239 Hitachi hard disk drive specifications 240 Write Multiple FUA Ext CEhHitachi hard disk drive specifications 241 Write Sectors 30h/31h Write Sectors Command 30h/31hHitachi hard disk drive specifications 242 Hitachi hard disk drive specifications 243 Write Sectors Ext 34h Write Sectors Ext Command 34hHitachi hard disk drive specifications 244 Hitachi hard disk drive specifications 245 Write Stream DMA 3Ah Write Stream DMA Command 3AhHitachi hard disk drive specifications 246 Bit5 Hitachi hard disk drive specifications 247WC bit6 Hitachi hard disk drive specifications 248 Write Stream PIO 3Bh Write Stream PIO Command 3BhHitachi hard disk drive specifications 249 Hitachi hard disk drive specifications 250 Hitachi hard disk drive specifications 251 Write Uncorrectable Ext 45h Write Uncorrectable Ext Command 45hHitachi hard disk drive specifications 252 Hitachi hard disk drive specifications 253 Timeout Values Hitachi hard disk drive specifications 254Hitachi hard disk drive specifications 255 Index 257 258
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HCS721016CLA382, HCS721050CLA382, HCS721025CLA382, HDP725050GLA360, HUA722050CLA330/1 specifications

Hitachi's lineup of hard disk drives, including models such as HDS721075CLA632, HDS721032CLA362, HDS721032CLA662, HDS721050CLA362, and DSDS7210C09EN-04, offers a variety of features catering to different storage needs. These drives are widely recognized for their reliability, performance, and efficiency, making them suitable for both consumer and enterprise applications.

The HDS721075CLA632 model, with a capacity of 750GB, strikes a balance between performance and storage capabilities. It operates at 7200 RPM, ensuring quick access to data while maintaining low latency. Its 32MB cache enhances data transfer rates and improves overall system responsiveness. This HDD is particularly useful for gaming, multimedia, and office applications, allowing users to store a substantial amount of data with quick retrieval times.

The HDS721032CLA362 and HDS721032CLA662 share many similarities and are both designed for budget-conscious consumers. With a capacity of 320GB and a 7200 RPM, they offer efficient storage solutions for everyday tasks. The 32MB cache buffer enables efficient caching of frequently accessed files, providing a smooth experience for users.

Another notable model is the HDS721050CLA362, which features a capacity of 500GB. Like its counterparts, this drive operates at a speed of 7200 RPM and utilizes a 32MB cache, which ensures optimal performance for data-heavy applications. This model stands out for its energy efficiency, resulting in lower operational costs, making it an appealing choice for businesses and energy-conscious consumers alike.

On the other hand, the DSDS7210C09EN-04 is a part of Hitachi's enterprise-oriented offerings. This drive is engineered for demanding applications, featuring advanced technologies such as error recovery controls and enhanced data protection features. With a focus on reliability and performance, the DSDS7210C09EN-04 serves well in server environments and for high-performance computing.

Hitachi's hard drives incorporate various technologies that enhance their performance and durability. Features such as staggered start-up, which gradually powers on the drive, help minimize power surges and increase the longevity of the device. Moreover, Hitachi's commitment to quality ensures that each drive undergoes rigorous testing, guaranteeing functionality and reliability.

Overall, the diverse range of models from Hitachi provides effective solutions for anyone from casual users to enterprises, combining storage capacity with advanced technologies to meet the evolving demands of modern data storage.
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