Final answer:
Raid Level 2 and Raid Level 3 are both methods of storing data across multiple drives for redundancy and higher performance. Raid Level 2 uses Hamming code for error correction and offers lower storage capacity efficiency, while Raid Level 3 uses byte-level striping with dedicated parity drive and provides higher storage capacity efficiency.
Step-by-step explanation:
Raid Level 2 and Raid Level 3
Raid Level 2 and Raid Level 3 are both methods of storing data across multiple drives for redundancy and higher performance. The main difference between them lies in their approach to data storage and data recovery.
Raid Level 2:
- Uses Hamming code for error correction and requires a minimum of four drives.
- Provides error correction at the bit level and can detect and correct single-bit errors.
- Offers low storage capacity efficiency as the parity data is stored separately from the main data.
- Higher cost due to the use of additional drives for error correction.
Raid Level 3:
- Uses byte-level striping with dedicated parity drive.
- Parity is striped across all the drives in the array.
- Offers higher storage capacity efficiency as the parity data is interleaved with the main data.
- Lower cost compared to Raid Level 2 as it requires fewer drives.
- Provides simultaneous read and write access to multiple data blocks.
Overall, while Raid Level 2 provides more advanced error correction, Raid Level 3 offers higher storage capacity efficiency and lower cost.