Читать книгу Big Data - Seifedine Kadry - Страница 18

Data generated and processed by big data are continuously growing at an ever increasing pace. Volume grows exponentially owing to the fact that business enterprises are continuously capturing the data to make better and bigger business solutions. Big data volume measures from terabytes to zettabytes (1024 GB = 1 terabyte; 1024 TB = 1 petabyte; 1024 PB = 1 exabyte; 1024 EB = 1 zettabyte; 1024 ZB = 1 yottabyte). Capturing this massive data is cited as an extraordinary opportunity to achieve finer customer service and better business advantage. This ever increasing data volume demands highly scalable and reliable storage. The major sources contributing to this tremendous growth in the volume are social media, point of sale (POS) transactions, online banking, GPS sensors, and sensors in vehicles. Facebook generates approximately 500 terabytes of data per day. Every time a link on a website is clicked, an item is purchased online, a video is uploaded in YouTube, data are generated.