Data storage and preservation Parallelizing through striping Main idea o use several devices in parallel for a single stream o moving the limitations up by summing performances Basic striping:Divide and conquer for storage o split data into chunks aka stripes on different devices o access in parallel File A.1 File A.2 File A.3 File A.4 File B.1 File B.2 File B.3 File C.1 File C.2 File C.3 File C.4 File C.5 File C.6 Disk 1 Disk 2 Disk 3 Disk 4 Disk 5 nping mapreduce 9/62 S.Ponce-CERNData storage and preservation 9 / 62 S. Ponce - CERN devices // risks consistency safety c/c striping mapreduce Parallelizing through striping Main idea use several devices in parallel for a single stream moving the limitations up by summing performances Basic striping : Divide and conquer for storage split data into chunks aka stripes on different devices access in parallel Disk 1 Disk 2 Disk 3 Disk 4 Disk 5 File C.4 File C.5 File C.6 File B.2 File B.3 File C.1 File C.2 File C.3 File A.1 File A.2 File A.3 File A.4 File B.1