Seong-lae Choredundant array of inexpensive disks
Hardware RAIDRAID level - originally 5 level
RAID 0RAID 1RAID 2RAID 3 RAID 4RAID 5Usual tech of server and NAS and data center
Two design goals of various RAIDs
- increased data reliability mirroring data
- increased input/output performance
trade-off between reliability and performance
even parity, odd parity for detect block failure Striping : Disk striping - look at the diagrams which are like stripes