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"WD Red Pro NAS Hard Drive WD4002FFWX - Disco duro - 4 TB - interno - 3.5" - SATA 6Gb/s - 7200 rpm - búfer: 128 MB"@es 
 "Western Digital Red 6 TB Internal HDD" " Western HDD - WD60EFRX Desktop Hard Drives CDW.com
"WD's exclusive NASware technology, built into every WD Red hard drive, improves NAS storage performance by reducing common hard drive concerns in NAS systems including concerns for things like compatibility, integration, upgradeability, reliability and cost of ownership that are experienced with a hard drive designed for desktop computers." 