Apower failure that occurs while a disk block is beingwritten could result in the block being only partially written. Assume that partially written...

Apower failure that occurs while a disk block is beingwritten could result

in the block being only partially written. Assume that partially written

blocks can be detected. An atomic block write is one where either the

disk block is fully written or nothing is written (i.e., there are no partial

writes). Suggest schemes for getting the effect of atomic block writes

with the following RAID schemes. Your schemes should involve work on

recovery from failure.

a. RAID level 1 (mirroring)b. RAID level 5 (block interleaved, distributed parity)