Question: RAID 1 -- Disk Mirroring RAID 2 -- Bit Interleaved Redundancy RAID 3 -- Bitwise Parity RAID 4 -- Block Parity RAID 5 -- Interleaved

RAID 1 -- Disk Mirroring

RAID 2 -- Bit Interleaved Redundancy

RAID 3 -- Bitwise Parity

RAID 4 -- Block Parity

RAID 5 -- Interleaved Parity Sectors

RAID 6 -- P+Q Redundancy

(b) Consider a system with 5 blocks of data and one parity disk. Let a block read be 1 cycle and block write be 2 cycles. Let logical XOR take 1 cycle. When a block is being written into the system, list the following for RAID3 and RAID4 systems.

(i) What are the operations that will be performed?

RAID3:

RAID4:

(ii) What is the total cycle time for the operation?

RAID3:

RAID4:

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