20 TB 3.5" 7200 RPM SAS Server/workstation HDD 1.2 Gbit/s Uncorrectable Bit Error Rate (UBER): < 1 per 10^15 bits read 690 g 20TB capacity with a reimagined HDDAn innovative storage architecture to help our customers meet their need for exponential data growth.Reimagining the HDD for Exponential Data GrowthHyperscale 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. 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.Western Digital has developed flash-enhanced drives with OptiNANDtechnology by vertically integrating our leading NAND flash with our world-class HDDs. Western Digital HDDs have been leaders in areal de