Hitachi HDS723020BLA642 Acoustics, Sound power level, Discrete tone penalty, Weighted sound power

Page 37

7K200 SATA OEM Specification

6.6Acoustics

6.6.1Sound power level

The criteria of A-weighted sound power level are described below.

Measurements are to be taken in accordance with ISO 7779. The mean of the sample of 40 drives is to be less than the typical value. Each drive is to be less than the maximum value. The drives are to meet this requirement in both board down orientations.

A-weighted Sound Power

200GB, 160GB 120GB models

Idle

Operating

100GB, 80GBmodels

Idle

Operating

Table 22. Weighted sound power

Typical (Bels)

2.5.

2.9

2.2

2.6

Maximum (Bels)

2.8

3.4

2.5

3.1

The background power levels of the acoustic test chamber for each octave band are to be recorded.

Sound power tests are to be conducted with the drive supported by spacers so that the lower surface of the drive be located 25±3 mm above from the chamber floor. No sound absorbing material shall be used.

The acoustical characteristics of the disk drive are measured under the following conditions:

Mode definitions

Idle mode: Power on, disks spinning, track following, unit ready to receive and respond to control line commands.

Operating mode: Continuous random cylinder selection and seek operation of the actuator with a dwell time at each cylinder. The seek rate for the drive can be calculated as shown below.

Ns = 0.4/(Tt + T1)

where:

Ns = average seek rate in seeks/s

Tt = published seek time from one random track to another without including rotational latency

T1= equivalent time in seconds for the drive to rotate by half a revolution

6.6.2Discrete tone penalty

Discrete tone penalties are added to the A-weighted sound power (Lw) with the following formula only when determining compliance.

Lwt(spec) = Lw + 0.1Pt + 0.3 < 4.0 (Bels)

where

Lw = A-weighted sound power level

Pt = Value of desecrate tone penalty = dLt – 6.0(dBA)

dLt = Tone-to-noise ratio taken in accordance with ISO 7779 at each octave band.

37/173

Page 36 Page 38
Image 37
Page 36 Page 38
Contents Hitachi Travelstar 7K200 Copyright Hitachi Global Storage Technologies Table of Contents 11.5 14.8 List of Figures List of Tables 7K200 Sata OEM Specification 7K200 Sata OEM Specification Abbreviations General Introduction11 /173 12/173 References Drive handling precautionsGeneral caution Outline of the drive Part 1 Functional Specification Fixed disk subsystem description Head disk assembly dataControl Electronics Formatted capacity by model number Fixed disk characteristicsFormatted capacity by model number Data sheet Data sheetCylinder allocation Cylinder allocationCommand overhead Performance characteristicsPerformance characteristics Average seek time including settling Mechanical positioningFull stroke seek Average latencyDrive ready time Drive ready timeOperating mode at power on Mode transition timeAdaptive power save control Operating modeWrite safety Data loss on power offData integrity Write CacheData buffer test Error recoveryAutomatic reallocation ECC Temperature and humidity SpecificationEnvironment Corrosion testConductive noise Radiation noiseMagnetic fields Magnetic flux density limitsRequirements DC power requirementsPower consumption efficiency Power consumption efficiencyReliability Service life and usage conditionData reliability Failure prediction S.M.A.R.TRequired Power-Off Sequence Preventive maintenancePower switch design considerations Load/unloadTest considerations Physical dimensions and weight Mechanical specificationsPhysical dimensions and weight Mounting hole locationsMounting orientation Connector and jumper descriptionLoad/unload mechanism Operating vibration Vibration and shockRandom vibration Swept sine vibrationOperating shock Nonoperating vibrationNonoperating shock Weighted sound power Sound power levelAcoustics Discrete tone penaltyElectromagnetic compatibility Identification labelsPackaging SafetySubstance restriction requirements Interface connector Electrical interface specificationsCabling Interface connector pins and I/O signals Signal definitions1 TX+ / TX 2 RX+ / RXCOMRESET/COMINIT Comwake Out of band signalingPart 2 Interface Specification Introduction GeneralTerminology Interrupt request Device or HostDeviations from Standard Check Power ModePhysical Interface RegistersRegister naming convention and correspondence Register naming conventionError Register Command registerDevice Control Register Device RegisterLBA High Register Features RegisterLBA Low Register LBA Mid RegisterBSY Status RegisterPower On Reset POR Reset ResponseSoft Reset Software Reset General Operation DescriptionsDefault Register Values Diagnostic and Reset considerationsDiagnostic Codes Reset error register valuesRequired power-off sequence Power-off considerationsDevice’s behavior by ATA commands Emergency unloadPower Management Feature Sector Addressing ModeLogical CHS Addressing Mode LBA Addressing ModePower Management Commands Power ModeStandby/Sleep command completion timing Interface Capability for Power ModesPerformance Idle mode Initial Power Mode at Power OnActive Idle mode Low Power Idle mode12.8 S.M.A.R.T. Function Interface Power Management Mode Slumber and PartialTransition Time AttributesSecurity Mode Feature Set Master Password Revision Code PasswordSecurity Level Operation exampleInitial Setting Operation from POR after User Password is setUsual Operation User Password LostAttempt limit for Security Unlock command Command TableCommand table for device lock operation Read Native Max Address ‘F8’h Set Max Address ‘F9’h Protected Area FunctionShipping HDDs from HDD manufacturer Example for operation In LBA modeSet Max Set Password data content Set Max security extension commandsWrite Cache Function Seek OverlapReassign Function Non recovered write errors 12.14 48-bit Address Feature SetNon recovered read errors Recovered read errorsPreserved software settings Software Setting Preservation Feature SetSetting Native Command QueuingSmart Command Transport SCT Command ProtocolSCT Action Code Supported Data Out Commands Data In CommandsDMA Data Transfer Commands Non-Data CommandsRead Fpdma Queued Write Fpdma Queued First-parity DMA CommandsCommand set Command DescriptionsCommand Set Output Registers Command Set SubcommandInput Registers Check Power Mode Command E5h/98h Check Power Mode E5h/98hInput Parameters From The Device Device Configuration Restore subcommand C0h Device Configuration Overlay B1hDevice Configuration Freeze Lock subcommand C1h Device Configuration Overlay Command B1hDevice Configuration SET subcommand C3h Device Configuration Identify subcommand C2hDevice Configuration Overlay Data structure DCO error information definition Execute Device Diagnostic Command 90h Execute Device Diagnostic 90hFlush Cache E7h Flush Cache Command E7hFlush Cache Ext EAh Flush Cache EXT Command EAhFormat Track 50h Vendor Specific Format Track Command 50hOutput Parameters To The Device LBA Low LBA High/MidFormat Unit F7h Vendor Specific Format Unit Command F7hIdentify Device ECh Identify Device Command EChIdentify device information 90/173 91/173 01FCH 93/173 94/173 95/173 7AB8H =ATA8-AST 98/173 Idle E3h/97h Idle Command E3h/97hOutput Parameters To The Device Sector Count Idle Immediate Command E1h/95h Unload FeatureIdle Immediate E1h/95h Initialize Device Parameters 91h Initialize Device Parameters Command 91hRead Buffer E4h Read Buffer Command E4hRead DMAC8h/C9h Read DMA Command C8h/C9hRead DMA Ext 25h Read DMA Ext Command 25hOutput Parameters To The Device Feature Current Read Fpdma Queued Command 60hFeature Previous Read Fpdma Queued 60hRead Log Ext2Fh Read Log Ext Command 2FhLog address definition Output Parameters To The DeviceGeneral purpose Log Directory Extended comprehensive Smart error logError log index Error Log versionExtended Error log data structure Extended comprehensive Smart error LogError data structure Command data structureExtended Self-test log sector Device error countSelf-test log data structure revision number Extended Self-test log data structureCommand Error information Command ErrorSelf-test descriptor index Extended Self-test log descriptor entryPhy Event Counter Counter Reset MechanismsCounter Identifiers Read Log Ext Log Page 11hPhy Event Counter information Read Multiple C4h Read Multiple Command C4hOutput Parameters To The Device Sector Count Current Read Multiple Ext 29hRead Native Max Address F8h Read Native Max Address Command F8hRead Native Max Address Ext 27h Read Native Max Address Ext Command 29hRead Sectors 20h/21h Read Sectors Command 20h/21hRead Sectors Ext 24h Read Sectors Ext Command 24hRead Verify Sectors 40h/41h Read Verify Sectors Command 40h/41hRead Verify Sectors Ext 42h Read Verify Sectors Ext Command 42hRecalibrate 1xh Recalibrate Command 1xhSecurity Disable Password Command F6h Security Disable Password F6hPassword Information for Security Disable Password command Security Erase Prepare F3h Security Erase Prepare Command F3hSecurity Erase Unit F4h Security Erase Unit Command F4hErase Unit Information Identifier126/173 Security Freeze Lock F5h Security Freeze Lock Command F5hSecurity Set Password Command F1h Security Set Password F1hSecurity Set Password Information Security Level PasswordRevision Code Identifier=User / Security level = HighSecurity Unlock F2h Security Unlock Command F2hSecurity Unlock Information Seek 7xh Seek Command 7xhOutput Parameters To The Device Feature Sense Condition Command F0hSense Condition F0h vendor specific Input Parameters From The Device Sector CountSet Features Command EFh Set Features EFh134/173 Set Max Address F9h Set Max Address Command F9hInput Parameters From The Device LBA Low 04hSet Max Address Ext 37h Set Max Address Ext Command 37hInput Parameters From The Device LBA Low HOB=0 7K200 Sata OEM Specification Set Multiple C6h Set Multiple Command C6hSleep E6h/99h Sleep Command E6h/99h14.39.1.1S.M.A.R.T. Read Attribute Values Subcommand D0h 14.39.1 S.M.A.R.T. Sub commandsM.A.R.T. Function Set Command B0h 14.39 S.M.A.R.T Function Set B0h14.39.1.4S.M.A.R.T. Save Attribute Values Subcommand D3h Status ErrorLBA Mid LBA High14.39.1.7S.M.A.R.T. Write Log Sector Subcommand D6h 14.39.1.6S.M.A.R.T. Read Log Sector Subcommand D5h14.39.1.8S.M.A.R.T. Enable Operations Subcommand D8h Log sector addresses14.39.1.10 S.M.A.R.T. Return Status Subcommand DAh 14.39.1.9S.M.A.R.T. Disable Operations Subcommand D9hData Structure Revision Number Device Attributes Data StructureDevice Attribute Data Structure Individual Attribute Data Structure Individual Attribute Data StructureSelf-test execution status Off-Line Data Collection StatusStatus Flag Definitions Current Segment Pointer 14.39.2.9 Error Logging CapabilityOff-Line Data Collection Capability 14.39.2.8 S.M.A.R.T. CapabilitySelf-test failure check point Device Attribute Thresholds Data StructureSelf-test completion time Data Structure Checksum14.39.4 S.M.A.R.T. Log Directory 14.39.5 S.M.A.R.T. error log sectorAttribute ID Numbers Attribute ThresholdError log pointer 14.39.5.1 S.M.A.R.T. error log versionM.A.R.T. error log sector Error log data structureX1h Value State X0hX2h X3hSelf-test log data structure Self-test log data structureM.A.R.T. Error Codes Error ReportingSelective self-test log data structure Selective self-test log data structureStandby E2h/96h Standby Command E2h/96hStandby Immediate E0h/94h Standby Immediate Command E0h/94hWrite Buffer E8h Write Buffer Command E8hWrite DMA CAh/CBh Write DMA Command CAh/CBhWrite DMA Ext 35h Write DMA Ext Command 35hWrite DMA FUA Ext 3Dh Write DMA FUA Ext Command 3DhWrite Fpdma Queued 61h Write Fpdma Queued Command 61hWrite Log Ext 3Fh Write Log Ext CommandWrite Multiple C5h Write Multiple Ext 39h Write Multiple Ext Command 39hWrite Multiple FUA Ext CEh Write Multiple FUA Ext Command CEhWrite Sectors 30h/31h Write Sectors Command 30h/31hWrite Sectors Ext 34h Write Sectors Ext Command 34hWrite Uncorrectable Ext 45h Write Uncorrectable Ext Command 45h170/173 Timings Timeout ValuesErase Unit F4h on 172/173 Copyright Hitachi Global Storage Technologies
Related manuals
Manual 2 pages 13.24 Kb

HDS723020BLA642 specifications

The Hitachi HDS723020BLA642 is a high-performance hard disk drive that exemplifies the balance between reliability and advanced technology, making it an excellent choice for a range of applications, from desktop computers to enterprise storage solutions. This 2TB SATA hard drive is designed to meet the growing data storage needs of users who demand both speed and efficiency.

One of the key features of the HDS723020BLA642 is its impressive rotational speed of 7200 RPM. This speed facilitates faster data access and improved overall performance, significantly enhancing the user experience during data-intensive operations such as gaming, video editing, and large file transfers. Coupled with a SATA III interface, this drive facilitates data transfer rates of up to 6 Gb/s, providing an efficient conduit for moving data quickly between the hard drive and the motherboard.

The drive comes equipped with a large 64 MB cache, which plays a crucial role in buffering read and write operations. This substantial amount of cache memory allows the drive to temporarily store frequently accessed data, leading to reduced latency and enabling smoother multitasking capabilities. Users will benefit from faster load times and reduced wait periods when working with large files.

Reliability is another defining characteristic of the HDS723020BLA642. Hitachi, now a part of Western Digital, has a longstanding reputation for producing durable hard drives. This model incorporates advanced technologies, such as the Fluid Dynamic Bearing (FDB) for quieter operation and better longevity. The drive also features an enhanced error recovery system that minimizes the risk of data loss, making it a suitable option for both personal and professional use.

In terms of power efficiency, the HDS723020BLA642 is designed to consume less power during operation compared to older hard drive models. This efficiency not only helps in reducing operational costs but also contributes to a longer lifespan for the drive itself.

Overall, the Hitachi HDS723020BLA642 hard drive combines speed, reliability, and efficiency into a compact package, making it an ideal choice for users needing a substantial amount of storage without compromising on performance. Whether for upgrading an existing system or building a new one, this drive offers a blend of technology and durability that caters to modern storage demands.
Top Page Image Contents