Hard Disk (HD) Interview Question:

Which errors can be handled by hard disks?

Submitted by: Murtaza

There are various ways in which modern hard disks handle errors.

★ Most hard disks use ECC`s error correcting codes mostly the Reed-Solomon error correction techniques.
★ The error checking codes usually employ the use of complex algorithms mathematically derived to store extra bits. These bits are used to correct various errors.
★ Nowadays most of the drives support LDPC or the low density parity check codes.
★ The LDPC allows performance to reach the Shannon limit and also result in the highest storage capacity drives.
Submitted by: Murtaza