RAID 3 - PARITY ON SEPARATE DISK | RAID 5 - PARITY ACROSS DISK

Data blocks are sub divided(striped) and written in parallel on two or more disk.
And additional driver store the parity information.
Advantage
Provide Large Data Transfer
Dis advantage
Too much costly
Performance is slower and random,
Required Min mum Drive :3


RAID 5 - PARITY ACROSS DISK
it is similar to RAID-3
Data are write into the across the disk with indepently.
Parity information write across the all the drive.
Dis Advantage
Capacity Yield
 Required Min mum Drive :3

RAID 6- MAINTAIN TWO PARITY
Minmum No of Required Disk :4
Even though if two disk fail,
we can recover the data.

Difference Between RAID 5 AND RAID 3
Raid1 : parity stored only in one disk
Raid5 :Parity stored in the multiple disk.