WD's SE hard drives provide an ideal solution for scaleout datacenters, delivering a cost-effective combination of performance, reliability, and workload capability while maintaining the hardiness of a true enterprise-class design. All WD datacenter storage devices are designed from the ground up to deliver optimal performance and maximum data integrity while running 24 x 7 x 365 in demanding multi-slot environments.Performance SpecificationsRotational Speed7,200 RPM (nominal)Buffer Size64 MBLoad/unload Cycles300,000 minimumTransfer RatesBuffer To Host (Serial ATA)6 Gb/s (Max)Transfer Rate (Buffer To Disk)171 MB/s (Sustained)Target PerformanceMTBF1,000,000 hoursMTBF for 1-5 Bay NAS1,200,000 hoursPhysical SpecificationsCapacity4 TBForm Factor3.5 InchUser Sectors Per Drive7,814,037,168Physical DimensionsRead (Peak Watts)9.50 WattsWrite (Peak Watts)9.50 WattsEnglishHeight1.028 InchesDepth5.787 InchesWidth4.00 InchesWeight1.66 PoundsMetricHeight26.1 mmDepth147 mmWidth101.6 mmWeight0.75 kgPower ManagementRead (Peak Watts)9.50 WattsWrite (Peak Watts)9.50 WattsEnglishHeight1.028 InchesDepth5.787 InchesWidth4.00 InchesWeight1.66 PoundsMetricHeight26.1 mmDepth147 mmWidth101.6 mmWeight0.75 kgEnvironmental SpecificationsShockOperating Shock (Read)65G, 2 msNon-operating Shock300G, 2 msAcousticsIdle Mode31 dBA (average)Seek Mode 034 dBA (average)Temperature (English)Operating41° F to 131° FNon-operating-40° F to 158° FTemperature (Metric)Operating5° C to 55° CNon-operating-40° C to 70° CElectrical SpecificationsCurrent RequirementsPower DissipationRead/Write:9.50 WattsIdle:8.10 WattsTitleWestern Digital Se 4TB Internal HDD WD4000F9YZ 3.5" SATA 6Gb/s 7200 rpm 64MBConditionNew pull.Working time : less then 40 hoursContentWestern Digital Se 4TB Internal HDD WD4000F9YZManufacturerWestern DigitalModelWD4000F9YZMPNWD4000F9YZSKUHDWS089Manufacturer warrantytill 11/11/2020UPC718037806020http://www.compeve.com/Products/Storage/HDD's/WD/WD4000F9YZ/WD4000F9YZ_compeve__4.jpghttp://www.compeve.com/Products/Storage/HDD's/WD/WD4000F9YZ/WD4000F9YZ_compeve__5.jpg
