western digital hard drive 512mb cache

{"cid":"91224401","title":"ST30000NM004K 30TB 7200RPM SATA HDD 4.16ms Latency 512MB Cache For Cloud Storage","imgUrl":"https:\/\/img.chinax.com\/nimg\/da\/56\/11595c58023e1acda2d85eab3e6b-200x200-1.jpg","attrs":{"Price":"$350-500 \/ piece","Model Number":"ST30000NM004K","Minimum Order Quantity":"1 piece","Place of Origin":"Beijing, China","Payment Terms":"L\/C,D\/A,D\/P,T\/T,Western Union,MoneyGram","Packaging Details":"box","interface rate":"6Gb\/s","weight(including package)":"700g(24.69oz)","size":"3.5\"","interface type":"SATA","speed":"7,200 rpm","cache":"512MB","capacity":"30TB","Operating Temperature":"10\u00b0C - 60\u00b0C"}}

{"cid":"91223517","title":"New Original 3.5-Inch WD181KFGX WD Red Pro NAS Hard Drive - 18TB hard disk for Computer parts","imgUrl":"https:\/\/img.chinax.com\/nimg\/fe\/a1\/0498bba7c4fa5035015abde5f88f-200x200-1.jpg","attrs":{"Price":"CN\u00a53,469.08\/pieces >=1 pieces","item condition":"New","package":"Yes","noise level":"6Gb\/s","interface rate":"6Gb\/s","number of hd":"1pc","single disk capacity":"1000GB","average seek time":"8.9ms","weight(including package)":"82G","shell material":"Metal","has external power supply":"No","expansion port":"Sata 3.0","private mold":"Yes","products status":"New","application":"LAPTOP","type":"External","style":"Hdd","hdd capacity":"\u2265 2TB","size":"2.5\"","speed":"15000rpm","brand name":"\/","model number":"WD181KFGX","place of origin":"Shanghai, China","wireless":"NO","read speed":"301-400MB\/S","write speed":"301-400MB\/S","Suitable for":"Workstation, Laptop, Desktop","MOQ":"1 Piece","Lead time":"1-2 Working Days","Condition":"100% Orginal"}}

{"cid":"91223161","title":"Purple Pro 18TB HDD 7200 RPM 512MB Cache SATA 6.0Gb\/s 3.5\" Internal Hard Drive WD181PURP with 12.0ms Average Seek Time","imgUrl":"https:\/\/img.chinax.com\/nimg\/31\/57\/65d2fcf53fa6efb1522fd4efdc98-200x200-1.jpg","attrs":{"Price":"CN\u00a52,021.66\/pieces >=2 pieces","Minimum Order Quantity":"2 pieces","item condition":"New","package":"Yes","noise level":"1.5Gb\/s","interface rate":"1.5Gb\/s","number of hd":"1pc","single disk capacity":"7GB","average seek time":"12.0ms","weight(including package)":"700g","shell material":"ABS","has external power supply":"No","expansion port":"Gigabit Network Interface","private mold":"NO","products status":"New","type":"Internal","style":"\/","size":"3.5\"","interface type":"\/","speed":"\/","cache":"\/","brand name":"\/","place of origin":"Shanghai, China","wireless":"Yes","read speed":"100-200MB\/S","write speed":"100-200MB\/S","Product name":"Hard Drives","Size":"Customized Size","Color":"Customizable"}}