Data storage and preservation Practical striping -the stripe size Desired picture File A. 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 striping mapreduce 12/62 S.Ponce-CERNData storage and preservation 12 / 62 S. Ponce - CERN devices // risks consistency safety c/c striping mapreduce Practical striping - the stripe size Desired picture 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