Parallel/Distributed Data Storage History ■1980/1990s Distributed database systems with tens of nodes ■2000s: Distributed file systems with 1000s of nodes Millions of Large objects(100's of megabytes) Web logs,images,videos,... Typically create/append only Distributed data storage systems with 1000s of nodes Billions to trillions of smaller(kilobyte to megabyte)objects Social media posts,email,online purchases,.. Inserts,updates,deletes ·Key-value stores 2010s:Distributed database systems with 1000s of nodes Database System Concepts-7th Edition 21.3 ©Silberscha乜，Korth and SudarshanDatabase System Concepts - 7 21.3 ©Silberschatz, Korth and Sudarshan th Edition Parallel/Distributed Data Storage History ▪ 1980/1990s • Distributed database systems with tens of nodes ▪ 2000s: • Distributed file systems with 1000s of nodes ▪ Millions of Large objects (100’s of megabytes) ▪ Web logs, images, videos, … ▪ Typically create/append only • Distributed data storage systems with 1000s of nodes ▪ Billions to trillions of smaller (kilobyte to megabyte) objects ▪ Social media posts, email, online purchases, … ▪ Inserts, updates, deletes • Key-value stores ▪ 2010s: Distributed database systems with 1000s of nodes