Page 73 - RHEL8 BOOK

Parity Disk: - This disk contains the data which is obtained after applying XOR condition over every
chunk.
In this level the reading and writing of data is completely depending on parity disk. We can
generate the loss information based on parity disk. If parity disk is down, there is no data secure.

 RAID 5: -
 Minimum 3 Hard disks.
 Maximum 32 Hard disks.
 Data is written alternately and evenly to two disks and parity is written on all disks.
 Read and write speed is fast.
 Fault tolerance is available.
 Also known as stripped with parity.

In this RAID level, we can maintain spare disk. Whenever any active disk in RAID is down the spare disk
will a replace the fault device and tries to generate the loss data from the remaining active disks. This
process is called convergence.

S. Pradhan
(MCA, MBA-IT, BCA, CCNA, MCSA 2012, RHCE, ETHICAL HACKING)
Email Id:-spradhan.iiht@gmail.com
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