RAID 0 : Doesn't provide any data protection (no redundancy) Data is broken into equal chunks and placed across several disks. Ex: 800KB of data can be written into RAID of 8 disks
With a stripe size of 100KB in 1/8th of the time it would require to do the same operation on one disk. RAID 0 is all about performance and no data protection. RAID 0 provides 0 redundancies.
RAID 1: Data is duplicated/Mirrored on one or more disks. Gives best performance among all RAID options
RAID 2: Striping with error detection and correction
RAID 3: Striping with dedication Parity disks that hold necessary information to correct the errors
RAID 4: Modified with Striping with dedicated parity. Stripes are of bigger size than RAID 3
RAID 5: Modified striping with interleaved parity.
MTBF: Mean time between Failures. Disks are rated with MTBF. RAID has higher MTBF (millions of hours compared to normal hard disk 10 thousand hrs)
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