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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。
性能级SDD推荐作者：来源：《微型计算机》2020年第04期普及大容量NVMe SSD 金士顿A2000 M.2NVMe固态硬盘500GB这款NVMe SSD采用慧荣的SM2263EN 4通道PCle 3.0 x4主控，每通道支持4CE片选信号。
同时该主控支持NVMe l.3规范，并配备了512MB缓存。
这款SSD板载了来自美光、FPGA编号为“NW951”的96层堆叠3DNAND TLC闪存，500GB容量产品的质保可写容量为350TB。
性能上，这款SSD配有一个接近75G B容量的超大SLC CACHE缓存空间，在ASSSD BENCHMARK中的总分逼近3000分。
在实际的游戏载入体验中，金士顿KC2000则能在20秒以内快速地启动各类游戏大作，比如《坦克世界》的启动时间只有不到13秒。
值得一提的是，目前金士顿A2000 M.2 NVMe固态硬盘正以豪华套装的形式销售，附送由散热器厂商Tt 专门为金士顿M.2NVMe SSD定制的铝合金散热器，颇具性价比。
兼得容量与性能西数蓝盘SN550 1TB这款SSD采用了来自闪迪的主控，是一款DRAM-Iess无缓存主控，支持HMB技术，可以使用少量电脑内存作缓存。
同时西数为其采用了96层堆叠的3DNAND TLC闪存颗粒，单颗闪存容量就达到了1TB。
质保方面，西部数据为SN550 SSD提供了5年质保加可写容量的质保政策（以先到为准），其1TB容量产品的质保可写容量达到600TB。
在测试中，西数蓝盘SN550 1TB的AS SSD BENCHMARK测试成绩达到了3689分，在PCle 3.O SSD中还是达到了中上水平。
它的连续读取速度为2233M B/s，高队列深度随机4KB 写入性能达到23.6万IOPS，全盘平均写入速度也能达到850.3M B/s。
其表现远远优于掉速后写入速度不到300M B/s的主流TLC SSD，以及实际写入速度不到100M B/s的QLC SSD。
微鑫存固态硬盘评价
1、启动快，没有电机加速旋转的过程。
2、不用磁头，快速随机读取，读延迟极小。
根据相关测试：两台电脑在同样配置的电脑下，搭载固态硬盘的笔记本从开机到出现桌面一共只用了18秒，而搭载传统硬盘的笔记本总共用了31秒，两者几乎有将近一半的差距。
3、相对固定的读取时间。
由于寻址时间与数据存储位置无关，因此磁盘碎片不会影响读取时间。
4、基于DRAM的固态硬盘写入速度极快。
5、无噪音。
因为没有机械马达和风扇，工作时噪音值为0分贝。
某些高端或大容量产品装有风扇，因此仍会产生噪音。
移动硬盘排行榜
作者：
来源：《电脑报》2022年第22期
No.1 WD_BLACK P10 5TB游戲移动硬盘 969元
No.2 希捷简系列商务随行2TB移动硬盘 449元
No.3 东芝新小黑A3 1TB移动硬盘 319元
如今不管是游戏还是摄影作品都有着容量越来越大的趋势，对于存储设备空间的需求就更大了。
专用大容量存储设备成为香饽饽。
WD_BLACK P10 5TB游戏移动硬盘就是这样的存在。
它采用硬核风格的黑色设计，铝合金外壳，无论是手感还是质感都是上佳水准，妥妥的电竞风。
WD_BLACK P10 5TB移动硬盘采用的是最新的USB 3.2接口，读取速度达到
140MB/s，在拷贝或者直接读取游戏时能够提供高效流畅的体验。
最重要的是，这款移动硬盘针对PS4和Xbox进行了特殊优化，与游戏主机连接之后就能立即识别，而不需要进行其他的文件系统格式化操作。
通过对WD_BLACK P10 5TB移动硬盘的体验，可以充分感受到大容量硬盘所带来的便利性，尤其是对于那些特别喜欢玩游戏的用户而言，5TB存储空间可容纳超过120个游戏，拓展专属于你的游戏王国，再也不用纠结存储空间不够的时候要删除哪一款游戏
了。
同时，还不用担心在玩游戏过程中出现画面卡顿、加载缓慢等尴尬局面。
有了这款5TB 游戏专用移动硬盘，随意装、随便玩，针对游戏主机特殊优化绝对是游戏友的好伴侣。
Complete your most demanding video and photo editing projects in less time with G-RAID Studio, a high-performance Thunderbolt 2 storage system with hardware RAID. Con gurable in RAID 0, RAID 1, or J BOD, G-RAID Studio features the latest Thunderbolt 2 technology for ultimate speed.G-RAID Studio ships with two removable 7200RPM hard drives in a solid black enclosure for total capacities up to 12TB. With transfer rates as high as 360MB/s, G-RAID Studio also supports 2K and compressed 4K video work ows, giving you the speed — and the capacity — your projects require.• Up to 360MB/s sustained transfer rates • Thunderbolt 2 technology • Up to 12TB!• Hardware RAID • Dual Thunderbolt ports • Enterprise-class hard drives • 3-Year limited warrantyKEY FEATURESHigh-performance Thunderbolt™ 2 storage system with hardware RAIDUP TO12TB!One GB is equal to one billion bytes and one TB equals 1,000 GB (one trillion bytes) when referring to hard drive capacity. Accessible capacity will vary from the stated capacity due to formatting and partitioning of the hard drive, the computer’s operating system, and other factors.Thunderbolt and the Thunderbolt logo are trademarks of Intel Corporation in the U.S. and other countries.Design by G-Technology in California. G-RAID, G-Technology and the G-Technology logo are registered trademarks of HGST, Inc. and its a liates in the U.S. and other countries. Apple, Mac, FireWire, MacBook Pro, Time Machine and the Mac logo are trademarks of Apple, Inc. Microsoft, Windows, Windows Vista and Windows XP are trademarks or registered trademarks of Microsoft Corporation in the US and/or other countries. Other trademarks are the property of their respective owners.©2014 G-Technology, a division of HGST, Inc. All rights reserved. R1 04/14。
零成本实现固态硬盘给机械硬盘加速之前我们聊过用内存给固态硬盘加速的话题：然并卵？实测看用内存软件加速固态硬盘是否有用，而今天的测试内容有所不同，这次我们用固态硬盘来给大容量的机械硬盘加速。
相比内存断电后数据全丢来说，固态硬盘的闪存作为非易失性存储介质的安全性更高一些。
下面的测试使用东芝Q300 240G固态硬盘与西部数据640GB机械硬盘进行。
测试机的系统盘使用的是MLC闪存的东芝Q200EX 240G。
Q300是东芝原厂TLC固态硬盘，四核心主控支持多达八条闪存通道，硬件规格不输主流级产品。
今天我们的目标就是使用东芝Q300和西数的机械硬盘组建一个虚拟的混合硬盘，实现分层存储：它既能拥有机械硬盘的大容量优势，同时也能将常用的数据自动调配至固态硬盘的闪存内，实现常用软件的较高使用性能。
目前能实现分层存储的方案有Intel智能响应、PrimoCache和Windows自带的存储池。
Intel智能响应对主板型号有比较严格的要求，PrimoCache则是一款收费软件（单PC授权200元人民币），这些都不是理想的选择。
今天我将带大家尝试的是Windows Server 2012操作系统中自带的存储池功能。
作为服务器版操作系统，服务器管理器程序会在开机后自动启动，从中可以找到文件和存储服务设置：删除东芝Q300固态硬盘和西数640G机械硬盘上的所有分区，然后切换到存储池，右下角任务中选择新建存储池。
存储池相当于一些硬盘的组合，在这个组合阵列之上可以创建虚拟的硬盘。
将东芝Q300固态硬盘和西数机械硬盘一起加入到存储池当中：操作系统会识别出各个硬盘的介质类型虚拟池只是一个磁盘的组合阵列，在它之上我们还需要创建虚拟磁盘来使用，点击左侧任务，选择新建虚拟磁盘：因为我们的虚拟池中包含了一块固态硬盘和一块机械硬盘，操作系统会提示可以创建存储层，这将是分层存储——用固态硬盘加速机械硬盘的关键：在虚拟磁盘向导当中一路下一步，在大小设置这里选择最大大小即可，这样创建出来的虚拟硬盘将拥有固态硬盘和机械硬盘二者容量之和。
