Which statement correctly describes the comparison between RAID 6 and RAID 5?

The chosen answer highlights a key aspect of RAID 5, which is its ability to continue operating after a single disk failure. RAID 5 uses both data striping and parity, allowing for recovery of lost data in the event of one disk failure. This means that while there may be some impact on performance during the rebuild process, the system remains operational, and data access can continue, albeit possibly at a reduced speed. This resilience is one of the significant advantages of RAID 5 configuration.

In contrast, RAID 6 enhances this feature by allowing the array to withstand two simultaneous disk failures, providing an additional layer of data protection. However, the statement in the chosen answer does not accurately address this added capability. Instead, it correctly emphasizes that RAID 5's operation remains unaffected in most aspects after a single disk failure.

Other choices discuss important aspects but don't capture the nuance of RAID 5's functionality under failure conditions as directly. The comparison with disk I/O performance indicated in the first choice is somewhat confusing, and while concurrent read/write operations are a benefit of RAID configurations, option C lacks specificity in addressing the differences between RAID 5 and RAID 6. Lastly, while storing data across multiple disks in RAID configurations is true, option D does not