Which RAID level can withstand the simultaneous loss of two physical drives?

RAID 10, also known as RAID 1+0, can withstand the simultaneous loss of two physical drives as long as those drives are not from the same mirror set. In this configuration, data is both mirrored and striped, which means that server performance and redundancy are both enhanced.

In a RAID 10 configuration, data is split across multiple drives (striping) and then each of those drives has a mirror (redundancy). This allows for high availability because if one drive fails, the mirrored drive can take over without data loss. If a second drive fails, as long as it is not from the same pair as the first failed drive, data can still be recovered, giving RAID 10 the ability to tolerate multiple drive failures.

This level of redundancy makes RAID 10 suitable for applications requiring high uptime and reliability, unlike RAID levels such as RAID 0, which does not provide any redundancy, or RAID 5 and RAID 6, which can only withstand a single drive failure under typical conditions. RAID 5 can tolerate one drive failure due to its parity data, while RAID 6 adds additional parity, allowing it to withstand the loss of two drives, but still requires careful implementation and cannot sustain simultaneous failures easily without affecting performance