Figure $2$ shows Mirrored RAID and Striped RAID. Discuss what happens in Mirrored RAID and Striped RAID when Block $3$ in both Disk $1$ are corrupted.

$[4$ marks$]$

$($b$)$

An $$interblock gap$$ is given to allocate time for the disk controller to transfer data from the buffer to memory using Direct Memory Access $($DMA$).$ However, sometimes the time provided by the intergap is insufficient to perform this task. Recommend a solution to overcome this problem.

$[3$ marks$]$

$($c$)$

Physical File Storage consists of :

$($i$)$ contiguous

$($ii$)$ non$-$contiguous $($linked$)$

$($iii$)$ non$-$contiguous $($indexed$)$ formats.

Evaluate the performance of each type of memory allocations in the event of file growth to the file management system