WD Ultrastar HC560 20TB 3.5" Enterprise HDD SATA 6Gb/s - 7200 RPM - 512MB Cache - 5 Years warranty 0F38785. . Reimagining the HDD for Exponential Data Growth. Hyperscale cloud, CSPs, enterprises, smart video surveillance partners, NAS suppliers and more, need storage solutions to meet the exponential growth in data creation. When it comes to cost-effective storage of data at scale, hard disk drives (HDDs) continue to play a central role. IDC projects that in 2025, HDDs will represent 82% of storage capacity sold to the enterprise market*. HDDs deliver the capacity, performance, and reliability needed to store vast amounts of data today and well into the future. Investments in HDD technology . remain critical to supporting worldwide data growth.