Data storage and preservation RAID O RAID stands to "Redundant Array of Inexpensive Disks" o set of configurations that employ the techniques of striping, mirroring,or parity to create large reliable data stores from multiple general-purpose computer hard disk drives(Wikipedia) Useful RAID levels RAID 0 striping RAID 1 mirroring RAID 5 parity See Data Safety part RAID 6 double parity Can be implemented in hardware or software striping mapreduce 10/62 S.Ponce-CERNData storage and preservation 10 / 62 S. Ponce - CERN devices // risks consistency safety c/c striping mapreduce RAID 0 RAID stands to “Redundant Array of Inexpensive Disks” set of configurations that employ the techniques of striping, mirroring, or parity to create large reliable data stores from multiple general-purpose computer hard disk drives (Wikipedia) Useful RAID levels RAID 0 striping RAID 1 mirroring RAID 5 parity RAID 6 double parity See Data Safety part Can be implemented in hardware or software