西部数据WD系列硬盘介绍
西部数据硬盘参数表
WD Gold™Datacenter Hard DrivesScale it in gold.With up to ten times the workload capacity of desktop drives, WD Gold™ hard drives employ advanced technology to deliver among the best in reliability, capacity, power efficiency and performance. Designed for a multitude of Datacenter-specific applications, WD Gold™ hard drives are perfect for high-availability server and storage arrays that demand the most robust storage device available with 24/7 premium customer support.INTERFACE SATA 6 Gb/s WIDTH/HEIGHT3.5-inch/1-inchPERFORMANCE CLASS7200 RPM ClassCAPACITIES4TB to 10TBMODEL NUMBERSWD101KRYZWD8002FRYZWD6002FRYZWD4002FYYZ Product BenefitsFull range of nearline capacities From entry-level servers to highend enterprise storage systems, WD Gold™ hard drives offer the capacities required for the most demanding datacenter environments.High workload capability Delivering both performanceand reliability to any datacenter environment, WD Gold™ hard drives are designed to handle workloads up to 550TB per year which is among the highest workload capability of any 3.5-inch hard drive.High level of reliabilityWith up to 2.5 million hours MTBF, WD Gold™ hard drives deliver oneof the highest levels of reliabilityand durability for yearly operation (24x7x365) within the most demanding storage environments.Vibration protectionEnhanced RAFF™ technology includessophisticated electronics to monitorthe drive and correct both linear androtational vibration in real time. Theresult is a significant performanceimprovement in high vibrationenvironments over our desktop harddrives.RAID-specific, time-limited errorrecovery (TLER)Reduces drive fallout caused by theextended hard drive error-recoveryprocesses common to desktop drives.Dynamic fly height technologyEach read-write head’s fly height isadjusted in real time for optimumreliability.Dual actuator technologyA head positioning system with twoactuators that improves positionalaccuracy over the data track(s). Theprimary actuator provides coarsedisplacement using conventionalelectromagnetic actuator principles.The secondary actuator usespiezoelectric motion to fine tune thehead positioning to a higher degree ofaccuracy.Compatibility testingAll WD Gold™ hard drives areextensively tested across a variety ofpopular OEM storage systems, SATAcontrollers, and host bus adapters, toensure ease of integration for a plugand play solution.Premium supportDedicated 24x7 over the phonesupport is included with every WDGold™ hard drive.ApplicationsEnterprise servers, datacenter environments, enterprise storage systems, data warehousing/mining, enterprise NAS, and high end surveillance systems.The WD AdvantageWD puts datacenter products through extensive Functional Integrity Testing (F.I.T.) prior to any product launch. This testing ensures our products consistently meet the high quality and reliability standards of the WD brand. Following a FIT test the Enterprise System Group (ESG) testing validates interoperability with HBAs, operating systems, and drivers, to ensure an even greater level of quality, reliability, and peace of mind.WD also has a detailed Knowledge Base with helpful articles and software utilities. Our customer support lines have long operational hours to ensure you get the help you need when you need it. Our toll-free customer support lines are here to help or you can access our WD Support site for additional details.WD Gold™1 Not all products may be available in all regions of the world.2As used for storage capacity, one megabyte (MB) = one million bytes, one gigabyte (GB) = one billion bytes, and one terabyte (TB) = one trillion bytes. Total accessible capacity varies depending on operating environment. As used for buffer or cache, one megabyte (MB) = 1,048,576 bytes. As used for transfer rate or interface, megabyte per second (MB/s) = one million bytes per second, and gigabit per second (Gb/s) = one billion bits per second. Effective maximum SATA 6 Gb/s transfer rate calculated according to the Serial ATA specification published by the SATA-IO organization as of the date of this specification sheet. Visit for details.3 WD hard drive products manufactured and sold worldwide after June 8, 2011, meet or exceed Restriction of Hazardous Substances (RoHS) compliance requirements as mandated by the RoHS Directive 2011/65/EU.4Controlled unload at ambient condition.5 Product MTBF and AFR specifications are based upon a 40°C base casting temperature and typical system workload of 219TB/year. Workload is defined as the amount of user data transferred to or from the hard drive. Product is designed for workloads up to 550TB/year.6See /warranty for regional specific warranty details.7 No non-recoverable errors during operating tests or after non-operating tests.8Sound power level.CAN ICES-3 (B) / NMB-3 (B)Western Digital3355 Michelson Drive, Suite 100Irvine, California 92612 U.S.A.For service and literature: 800.ASK.4WDC (800.275.4932)North America English 800.832.4778Spanish+86.21.2603.7560Asia Pacific 00800.27549338Europe(toll free where available)+31.880062100Europe/Middle East/AfricaWestern Digital, WD, the WD Logo, FIT Lab, RAFF, and WD Gold are registered trademarks or trademarks of Western Digital Corporation or its affiliates in the U.S. and/or other countries.. Other marks may be mentioned herein that belong to other companies. Product specifications subject to change without notice. Pictures shown may vary from actual products.© 2016 Western Digital Corporation or its affiliates2879-800074-A01 July 2016。
挂挡-游戏! 西部数据WD BLACK SN750 NVMe SSD深度测评 西部数据SN720
挂挡:游戏! 西部数据WD BLACK SN750 NVMe SSD深度测评西部数据SN720如今回首2018年，对于SSD来说绝对是重要的一年。
高性能的NVMeSSD在这一年步入了大发展与普及的道路，主流厂商们纷纷推出自家的NVMeSSD对产品以抢占市场。
西部数据也在这一年推出了自家的旗舰SSD，为游戏发烧友和专业用户打造的西数黑盘系列产品。
如今，WDBLACKNVMeSSD已经诞生了整整一年，也是时候更新换代了。
新一代的西数黑盘代号SN750，数字的提升自然也代表着性能比前代更强。
而变强的招式，恐怕会出乎你们的预料。
外观结构SN750一如既往地全黑，从PCB到芯片颜色，甚至连标签贴纸都换成了纯黑色底。
撕掉贴纸，这块1TB的NVMeSSD布局依旧，两颗闪存、一块主控、一颗缓存集中在单面。
闪存颗粒：SanDisk05560512GB缓存芯片：SKHynixH5xxxxFRUHC1GBDDR4-2400主控芯片：SanDisk20-82-007011性能测试对于新硬盘的测评，大家最想看的一定就是实际跑分数据，毕竟这是测评的干货所在嘛。
不过，对于SN750我们有着不同的跑分方法。
而这，就要说到SN750出人意料的变强方法了。
西部数据将这次的黑盘升级，除了产品本身外，还多了一个外挂WDBLACKSSDDashboard。
在WDBLACKSSDDashboard软件上可启用游戏模式后，通过停用固态硬盘上的低电量模式功能，从而让硬盘在游戏期间整体性能全开。
简而言之，就相当于解除了Windows系统本身对于硬盘性能的限制。
因此，我们的测试场景分为四种情况，分别在系统节能模式、系统平衡模式、系统高性能模式和开启游戏模式下进行跑分测速，通过对比来探索一下外挂的真正作用。
本次测试硬件环境如下：CrystalDiskMark测试在CrystalDiskMark的跑分中我们可以发现，windows系统不同电源模式调节后，4K随机写入是开启游戏模式变化最大的项目。
西部数据硬盘不同颜色代表什么
西部数据硬盘不同颜色代表什么作为最早的硬盘制造商之一，美国西部数据公司生产的硬盘一直都拥有超高的口碑。
西部数据硬盘分为五种颜色，每种颜色的硬盘具有不同的特色。
下面店铺就来为大家介绍一下西部数据硬盘的分类。
西部数据黑盘黑色硬盘的代号为LSWDCaviarBlack，它内部使用高性能的电子结构架设，机械结构严密，功耗低，在硬盘运行过程中不会过热、无接触磁头和振动保护保证数据安全，具有存储空间大、稳定度高、缓存大的特点，适合企业和服务器、全装备游戏型、多媒体剪辑型等高端计算机。
西部数据蓝盘蓝色硬盘的代号为KSWDCaviarBlue，它与其他颜色硬盘相比，整体性能较为平衡，并且使用寿命更长。
如果说黑盘是高端路线，那么蓝盘就是平民路线，西数蓝盘的价格实惠、功耗更小，适合一般家庭和个人使用。
西数蓝盘具有高速缓存容量，外部设有SATA和PATA接口，保证了其强力的性能，自带防震、错误修复与数据保护功能，提高了硬盘的稳定度和安全性。
西部数据紫盘紫盘是西部数据发布的最新硬盘，它主要针对视频监控数据存储的应用，为了监控兼容测试等服务，可以同时支持八块硬盘并行，接入32个高清摄像头同时运作，最大保证每年存储数据量达到60TB，适用于个人和小型企业等用户。
西数紫盘传输速度比不上黑盘，但稳定度较高，容量较大。
西部数据绿盘西数绿盘属于环保型硬盘，一般来说，硬盘容量增加，需要耗费的电量也逐步增大。
而西数绿盘则更低碳环保，它超静音运行、更为省电、低温、它在高硬盘容量和稳定性的前提下，比普通台式机的硬盘功耗低40%，耗电量降低4-5瓦。
西部数据红盘红盘主要针对NAS用户，适合小型企业和家庭，整体性能于绿盘接近，噪音小、功耗低、可以保证长时间的稳定工作，使用专门的NASware技术，让硬盘兼容性更高。
最后，店铺提醒大家，市面上西部数据硬盘假货很多，大家可以将硬盘外包装与硬盘外壳上的序列号对比，两码是否一致;然后再登陆西数官方网站在线查询，如果三码合一，则证明为正品。
西数硬盘不同颜色代表什么？
西数硬盘不同颜色代表什么？关于机械硬盘的颜色这个一般指西数WD，西数为了更好的区分各个硬盘的用途，分别有，红盘，绿盘，黑盘，蓝盘，紫盘，下面我简单说下几个盘的区别。
说白了就是指的西部硬盘上贴的那张标贴是红色就是红盘，是绿色就是绿盘，依次内推；黑盘：性能强悍，缓存大，速度比其他几个种类快。
主要适用于企业，吞吐量大的服务器，高性能计算应用，高性能游戏机。
缺点噪声有点大！蓝盘：家用级硬盘，我们现在装机基本上用的都是蓝盘。
性能比黑牌稍微低点但价格较低，性价比高。
另外蓝盘存储数据时间也比较长，蓝盘的数据理论保存年限在30年。
绿盘：SATA 硬盘，低热、安静、环保。
非常节能，适合大容量存储;采用IntelliPower技术，转速为5400转。
优势是安静、价格低，缺点是性能差，延迟高，寿命短。
红盘：其实也就是绿盘的延伸版，西数专门推出的针对NAS市场的硬盘，面向的是拥有1 至5 个硬盘位的家庭或小型企业NAS用户。
性能特性与绿盘比较接近，功耗较低、噪音较小、能够适应长时间的连续工作，拥有特色技术NASware，这技术让其兼容性更加出色，无论是针对NAS或是RAID都能够拥有突出的兼容性表现。
紫盘紫盘是西数2014年2月推出的专门面向视频监控应用的机械硬盘产品，由一个或者多个铝制或者玻璃制的碟片组成。
碟片外覆盖有铁磁性材料。
经过了专门的监控兼容性测试(包括CCT认证)，能够24×7不间断运行，平均故障间隔时间100万小时，适合家用、SOHO、中小企业。
其实这些颜色只适用于西数的硬盘，在家用级中基本上都是选蓝盘，在硬盘不断进化中后面又出来HDD混合硬盘，SSD固态硬盘所以目前来说家用级别基本上都是从机械硬盘转为固态硬盘，但因为固态硬盘价格昂贵，且容量不大，所以最好的方法就是机械硬盘和固态硬盘组合，好了就说这么多了，喜欢的别忘点个赞点击头像关注，谢谢！。
西部数据WD3200BEVT 320GB笔记本硬盘
西部数据ＷＤ３２００ＢＥＶＴ３２０ＧＢ笔记本硬盘作者：来源：《电脑爱好者》2008年第02期西部数据在先行发布了250GB笔记本硬盘之后不久，又率先推出了容量达到了320GB的笔记本硬盘——WD3200BEVT……待机只有0.25W的笔记本硬盘！西部数据WD3200BEVT 320GB笔记本硬盘是迄今为止容量最大的笔记本硬盘之一。
虽然东芝是第一家发布320GB笔记本硬盘的厂商，但至今依旧未见产品。
WD3200BEVT为标准2.5英寸笔记本硬盘，从规格上看，WD3200BEVT转速为5400rpm、支持SATA 3Gbps传输、寻道时间为12ms、并装备8MB缓存，最大传输率为50Mbps，噪音控制在24dBA～26dBA之间，读写时功耗仅为2.5W，一般状态下2W，待机为0.25W，非常优秀。
媲美台式机硬盘的性能表现。
测试中，使用HDTune测试，所得数据如下：最小传输速率：30.1MB/s最大传输速率：64.4MB/s平均传输速率：49.4MB/s突发传输速率：99.3MB/s寻道时间：16.4msCPU占用率：5.5%从测试成绩来看，平均传输率能达到50MB/s在5400rpm转速笔记本硬盘中实属少见，且突发传输速率更是达到了惊人的99.3MB/s。
略感遗憾的是其寻道时间为16.4ms，比标称速度略慢。
小提示：WD3200BEVT独家技术WhisperDrive：该技术让WD3200BEVT工作噪音仅26dBA，堪称市面最安静的笔记本硬盘之一。
ShockGuard：高强度抗震能力让WD3200BEVT可以在更为复杂的环境中工作。
IntelliSeek：可运算出最佳搜寻速度以达到省电、降噪、防振等表现。
西部数据命名
西数命名规则：如WD 5000 B P V T - -00HXZT112 3456 7 8 9 10WD就是西数5000,6400是容量,代表500G,640G.第七位A,代表容量单位和硬盘尺寸.A代表GB/3.5寸.如果是B,就是GB/2.5寸,C就是GB/1.0寸,E就是TB/3.5寸,等等.台机常见的就是A和E,分别是GB和TB/3.5寸.第八位A,代表产品类型,A代表Desktop/WD Caviar鱼子酱系列.B代表Enterprise/WD RE系列...等等等等....Y代表Enterprise/WD RE4系列...一般常见的都是A了,B和Y也有.第九位,代表缓存大小和转速.分什么颜色的盘看这个.A 代表5400转2MB缓存B 代表7200转2MB缓存---------------------------------2M绝种蓝盘C 代表节能型(自动调节转速)16MB缓存--------------------绿盘D 代表节能型(自动调节转速)该系列最大缓存(目前是32M)---绿盘F 代表10,000转16MB缓存G 代表10,000转8MB缓存J 代表7200转8MB缓存-----------------------------------8M的蓝盘K 代表7200转16MB缓存------------------------------主流蓝盘L 代表7200转,该系列最大缓存(目前为32M)----------------黑盘V 代表5400转8MB缓存(笔记本硬盘)第十位,也是主编号最后一位,代表接口类型.S就代表主流的SATA 3.0接口了A 代表并口ATA/66B 代表并口ATA/100C 代表零插入力接口（30针的）的并口D 代表ATA 一代1.5 Gb/s 传输速度E 代表并口ATA/133S 代表SATA 二代3.0 Gb/s 传输速度T 代表SATA 二代3.0 Gb/s 传输速度(笔记本硬盘)第二部分编号：00HXZT1前两位00,代表市场类型,00就代表面向消费级市场销售,不是00就代表是OEM产品,给其他企业品牌代工生产.具体编号根据给谁代工而不同第三位代表单碟的容量.随着容量的大幅飙升,现在西数在自家同系列、同容量，但不同碟片配置的硬盘型号标识上，对消费者不算很友好,同一款盘同一个编号标示却有着不同碟装,M,L,R,基本集中体现在这几个编号,但同一编号却有着不同的碟装,不同的容量.第四位代表同一系列的版本号,也就是第几代产品.2就是这一系列的第二代产品,3就是这一系列的第三代.最后两位代表固件Firmware版本号,我们常见的就是A0和B0主要是看到前面的主编号,就可以基本确定产品性能参数了.。
西数硬盘型号解析
WD Caviar®Green™Desktop Hard DrivesAs hard drive capacities increase, the power required to run those drives increases as well. WD Caviar Green drives make it possible for energy-conscious customers to build systems with higher capacities and the right balance of system performance, ensured reliability, and energy conservation.INTERFACE SATA WIDTH/HEIGHT3.5-inch/1-inchROTATIONAL SPEEDIntelliPower™CAPACITIES320 GB to 3 TBMODEL NUMBERSWD30EZRSDTL WD15EADS WD6400AARS WD25EZRSDTL WD10EARS WD6400AADS WD20EARS WD10EADS WD5000AADS WD20EADS WD8000AARS WD3200AACS WD15EARS WD7500AADS Note: Not all products may be available in all regions of the world.Massive capacityWD Caviar Green SATA drives now deliver up to 3 TB of storage on a single drive.Reduced power consumption WD has reduced power consumption making it possible for our energy-conscious customers to build systems with higher capacities and the right balance of system performance, ensured reliability, andenergy conservation.Cool and quietDrives with WD GreenPowerTechnology™ yield lower operatingtemperatures for increased reliabilityand low acoustics for ultra-quiet PCsand external drives.Perfect for external drivesExternal drive manufacturers caneliminate the need for a fan in a high-capacity product with aWD CaviarGreen drive, the coolest andquietest in its class.IntelliPowerA fine-tuned balance of spin speed,transfer rate, and caching algorithmsdesigned to deliver both significantpower savings and solid performance.Additionally, WD Caviar Green drivesconsume less current during startupallowing lower peak loads on systemsas they are booted.IntelliSeek™Calculates optimum seek speeds tolower power consumption, noise,and vibration.NoTouch™ ramp loadtechnologyThe recording head never touches thedisk media ensuring significantly lesswear to the recording head and mediaas well as better drive protectionin transit.Advanced Format (AF)Technology being adopted by WD andother drive manufacturers as one ofmultiple ways to continue growinghard drive capacities. AF is a moreefficient media format that enablesincreased areal densities. (RS andRSDTL models only)Product FeaturesApplicationsDesktop PCs, high capacity external storage, and NAS.Desktop / Consumer RAID Environments - WD Caviar Green Hard Drives are tested and recommended for use in consumer-type RAID applications (i.e., Intel Matrix RAID technology).-Business Critical RAID Environments – WD Caviar Green Hard Drives are not recommended for and are not warranted for use in RAID environments utilizing Enterprise HBAs and/or expanders and in multi-bay chassis, as they are not designed for, nor tested in, these specific types of RAID applications. For all Business Critical RAID applications, please consider WD’s Enterprise Hard Drives that are specifically designed with RAID-specific, time-limited error recovery (TLER), are tested extensively in 24x7 RAID applications, and include features like enhanced RAFF technology and thermal extended burn-in testing.Specifications1 3 TB 2.5 TB 2 TB 1.5 TB 1 TB 1 TBModel number WD30EZRSDTL WD25EZRSDTL WD20EARSWD20EADS WD15EARSWD15EADSWD10EADS WD10EARSInterface SATA 3 Gb/s SATA 3 Gb/s SATA 3 Gb/s SATA 3 Gb/s SATA 3 Gb/s SATA 3 Gb/s Formatted capacity3,000,592 MB2,500,495 MB2,000,398 MB1,500,301 MB1,000,204 MB1,000,204 MB User sectors per drive5,860,533,1684,883,781,1683,907,029,1682,930,277,1681,953,525,1681,953,525,168 LBA support Yes Yes Yes Yes Yes YesSATA latching connector Yes Yes Yes Yes Yes YesActuator latch/auto park Yes Yes Yes Yes Yes YesForm factor 3.5-inch 3.5-inch 3.5-inch 3.5-inch 3.5-inch 3.5-inch RoHS compliant2Yes Yes Yes Yes Yes Yes PerformanceData transfer rate (max)Buffer to hostHost to/from drive (sustained)3 Gb/s110 MB/s3 Gb/s110 MB/s3 Gb/s110 MB/s3 Gb/s110 MB/s3 Gb/s110 MB/s3 Gb/s111 MB/sCache (MB)64 (WD30EZRSDTL)64 (WD25EZRSDTL)64 (WD20EARS)32(WD20EADS)64 (WD15EARS)32(WD15EADS)3264Rotational speed (RPM)IntelliPower IntelliPower IntelliPower IntelliPower IntelliPower IntelliPower Reliability/Data IntegrityLoad/unload cycles3300,000300,000300,000300,000300,000300,000 Non-recoverable read errorsper bits read<1 in 1015<1 in 1015<1 in 1015<1 in 1015<1 in 1015<1 in 1015 Limited warranty (years)4333333Power Management12VDC (A, peak) 1.75 1.75 1.75 1.75 1.464 1.75Average power requirements (W) Read/writeIdleStandbySleep 6.255.51.00.7565.50.750.7563.70.80.84.732.750.720.724.92.80.40.44.862.80.380.38Environmental Specifications5Temperature (°C) Operating Non-operating 0 to 60-40 to 700 to 60-40 to 700 to 60-40 to 700 to 60-40 to 700 to 60-40 to 700 to 60-40 to 70Shock (Gs)Operating (2 ms, read) Operating (2 ms, read/write) Non-operating (1 ms)656525030652503065250306525030653003065300Average acoustics (dBA)6 Idle mode Performance seek mode Quiet seek mode 2425252429252429252429252327242327Physical DimensionsHeight (in./mm, max) 1.028/25.4 1.028/25.4 1.028/25.4 1.028/25.4 1.028/25.4 1.028/25.4Length (in./mm, max) 5.787/147 5.787/147 5.787/147 5.787/147 5.787/147 5.787/147Width (in./mm, ± .01 in.)4/101.64/101.64/101.64/101.64/101.64/101.6Weight (lb./kg, ± 10%) 1.61/0.73 1.61/0.73 1.61/0.73 1.61/0.73 1.32/0.60 1.32/0.601As used for storage capacity, one megabyte (MB) = one million bytes, one gigabyte (GB) = one billion bytes, and one terabyte (TB) = one trillion bytes. Total accessible capacity varies depending on operating environment. As used for buffer or cache, one megabyte (MB) = 1,048,576 bytes. As used for transfer rate or interface, megabyte per second (MB/s) = one million bytes per second, and gigabit per second (Gb/s) = one billion bits per second. Effective maximum SATA 3 Gb/s transfer rate calculated according to the Serial ATA specification published by the SATA-IO organization as of the date of this specification sheet. Visit for details.2WD hard drive products manufactured and sold worldwide after June 1, 2006, meet or exceed Restriction of Hazardous Substances (RoHS) compliance requirements as mandated by the European Union for electrical and electronic products. The RoHS Directive 2002/95/EC of the European Parliament, which is effective in the EU beginning July 1, 2006, aims to protect human health and the environment by restricting the use of certain hazardous substances in new equipment, and consists of restrictions on lead, mercury, cadmium, and other substances.3Controlled unload at ambient condition4The term of the limited warranty may vary by region. Visit /warranty for details.5No non-recoverable errors during operating tests or after non-operating tests.6Sound power level.Western Digital, WD, the WD logo, WD Caviar, and Put Your Life On It are registered trademarks in the U.S. and other countries; and WD Caviar Blue, WD Caviar Green, WD Caviar Black, IntelliSeek, IntelliPower, NoTouch, WD GreenPower Technology, and FIT Lab are trademarks of Western Digital Technologies, Inc. Other marks may be mentioned herein that belong to other companies. Product specifications subject to change without notice.© 2010 Western Digital Technologies, Inc. All rights reserved.Western Digital20511 Lake Forest DriveLake Forest, California 92630U.S.A.Specifications1800 GB750 GB640 GB640 GB500 GB320 GBModel number WD8000AARS WD7500AADS WD6400AARS WD6400AADS WD5000AADS WD3200AACS Interface SATA 3 Gb/s SATA 3 Gb/s SATA 3 Gb/s SATA 3 Gb/s SATA 3 Gb/s SATA 3 Gb/s Formatted capacity800,204 MB750,156 MB640,135 MB640,135 MB500,107 MB320,072 MBUser sectors per drive1,562,824,3681,465,149,1681,250,263,7281,250,263,728976,773,168625,142,448LBA support Yes Yes Yes Yes Yes YesSATA latching connector Yes Yes Yes Yes Yes YesActuator latch/auto park Yes Yes Yes Yes Yes YesForm factor 3.5-inch 3.5-inch 3.5-inch 3.5-inch 3.5-inch 3.5-inchRoHS compliant2Yes Yes Yes Yes Yes YesPerformanceData transfer rate (max)Buffer to hostHost to/from drive (sustained)3 Gb/s111 MB/s3 Gb/s110 MB/s3 Gb/s111 MB/s3 Gb/s110 MB/s3 Gb/s110 MB/s3 Gb/s110 MB/sCache (MB)64326432 3216Rotational speed (RPM)IntelliPower IntelliPower IntelliPower IntelliPower IntelliPower IntelliPower Reliability/Data IntegrityLoad/unload cycles3300,000300,000300,000300,000300,000300,000Non-recoverable read errorsper bits read<1 in 1015<1 in 1015<1 in 1015<1 in 1015<1 in 1015<1 in 1015Limited warranty (years)4333333Power Management12VDC (A, peak) 1.75 1.464 1.75 1.464 1.206 1.206Average power requirements (W)Read/writeIdleStandbySleep4.862.80.380.384.92.80.40.44.862.80.380.384.92.80.40.44.12.20.80.84.12.20.80.8 Environmental Specifications5Temperature (°C)OperatingNon-operating0 to 60-40 to 700 to 60-40 to 700 to 60-40 to 700 to 60-40 to 700 to 60-40 to 700 to 60-40 to 70Shock (Gs)Operating (2 ms, read)Operating (2 ms, read/write)Non-operating (1 ms)306530030653003065300306530030653503065300Average acoustics (dBA)6Idle modePerformance seek modeQuiet seek mode23272327242327232724212222212222Physical DimensionsHeight (in./mm, max) 1.028/25.4 1.028/25.4 1.028/25.4 1.028/25.4 1.028/25.4 1.028/25.4Length (in./mm, max) 5.787/147 5.787/147 5.787/147 5.787/147 5.787/147 5.787/147Width (in./mm, ± .01 in.)4/101.64/101.64/101.64/101.64/101.64/101.6Weight (lb./kg, ± 10%) 1.32/0.60 1.32/0.60 1.32/0.60 1.32/0.600.99/0.450.99/0.451As used for storage capacity, one megabyte (MB) = one million bytes, one gigabyte (GB) = one billion bytes, and one terabyte (TB) = one trillion bytes. Total accessible capacity varies depending on operating environment. As used for buffer or cache, one megabyte (MB) = 1,048,576 bytes. As used for transfer rate or interface, megabyte per second (MB/s) = one million bytes per second, and gigabit per second (Gb/s) = one billion bits per second. Effective maximum SATA 3 Gb/s transfer rate calculated according to the Serial ATA specification published by the SATA-IO organization as of the date of this specification sheet. Visit for details.2WD hard drive products manufactured and sold worldwide after June 1, 2006, meet or exceed Restriction of Hazardous Substances (RoHS) compliance requirements as mandated by the European Union for electrical and electronic products. The RoHS Directive 2002/95/EC of the European Parliament, which is effective in the EU beginning July 1, 2006, aims to protect human health and the environment by restricting the use of certain hazardous substances in new equipment, and consists of restrictions on lead, mercury, cadmium, and other substances.3Controlled unload at ambient condition4The term of the limited warranty may vary by region. Visit /warranty for details.5No non-recoverable errors during operating tests or after non-operating tests.6Sound power level.2879-701229-A15Oct 2010 800.ASK.4WDC North America800.832.4778Spanish+800.6008.6008Asia Pacific00800.27549338Europe(toll free where available)+31.880062100Europe/Middle East/AfricaWD Caviar Green is part of WD’s complete lineup of desktop hard drives.。
西部数据WD硬盘跳线的详解
西部数据硬盘跳线的作用
西部数据硬盘的跳线一共有8个，4对，在硬盘的标签上，它们被标识为英文FACTORY JUMPER SETTINGS，翻译成中文的意思是工厂跳线设置。
对于普通的用户来说，这些跳线无需更改，只有品牌机或者资深的专业技术人员才可能需要对它们进行相关的设置，笔者曾经碰到过普通用户因为不懂而擅自将机箱电源的老的软驱电源接口线插入而损坏硬盘的情况，这里专门提醒一下。
以西数硬盘为例，下面讲解一下有关跳线的设置，下文中的数字标识在硬盘的标签上都有标记。
1-2短接，表示启用频谱扩展，即允许硬盘工作频率偏移。
SATA 硬盘是允许工作频率改变的，就是说可以降低或升高工作频率来使用。
3-4短接，允许电源管理硬盘的启动，即允许硬盘受控旋转启动，这个用于多驱动器服务器环境时，可以让多个硬盘按顺序启动，以避免同时启动对电源的冲击。
5-6短接，强行将SATA III 接口规范降至SATA II 规范（或者将SATA II 降至SATA I），以求得与旧主板的兼容。
因为有些仅支持SATA I 规范的老主板无法识别SATA III 硬盘，但能识别SATA II 硬盘。
7-8短接，对于新型4K扇区先进格式化硬盘来说，XP无法正确识别4K扇区（传统都是512字节扇区），短接7-8可以让硬盘不必运行“4K扇区对齐程序”，就能在XP下正常运行（仅限全部容量创建为一个分区）。
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西部数据WD系列硬盘介绍
西部数据WD20PURX是西部数据(WD)紫盘2TB SATA6Gb/s 64M 监控硬盘(WD20PU RX)，紫盘是监控专用盘。
紫盘主打视频监控市场，特点是稳定和安全性。
据官方称，新的紫盘，经过了专门的监控兼容性测试(包括CCT认证)，能够24×7不间断运行，平均故障间隔时间100万小时，适合家用、SOHO、中小企业。
紫盘是标准的3.5寸规格，容量1TB、2TB、3TB、4TB(产品编号WDx0PURX)，缓存64MB，接口SATA 6Gbps，转速基于IntelliPower技术自动调节，还有性能增强技术Al lFrame。
它支持最多八块硬盘并行，支持接入最多32个高清摄像头，年写入负载量60TB，典型功耗5.1W。
我们家庭用户也可以使用，紫盘定位安全，稳定，性能方面比红盘略低，绿盘高。
如果你最求的是稳定，当然可以使用紫盘，如果追求性能的话建议你还是购买黑蓝盘吧，甚至SS D。
蓝盘才适合我们普通家庭用户。
目前，西数硬盘拥有了不错的色彩产品线，性能和定位也不同，具体如下：
黑盘：
高性能、大缓存、速度快。
适合：企业，吞吐量大的服务器和发烧级的游戏用户使用。
蓝盘：
性价整体比较平衡适合：存放数据和一般使用。
绿盘：
环保型、静音、发热低、省电、性能一般转速在5400-7200间自动调整，适合当作下载盘。
红盘：
红盘定位于家庭、小型办公NAS专用，具备7×24工作的能力。
功耗和噪音上与绿盘相当但在可靠性及稳定性上远胜于绿盘。
紫盘：
主打视频监控市场，7x24小时运作，支持IntelliPower技术，容量1-4TB，定位比绿盘略高，性能不及红盘。