What condition arises when drives in a RAID array contain errors and another drive has failed?

The condition that arises when drives in a RAID array contain errors and another drive has failed is referred to as a "Double Fault." This term highlights a situation where there are multiple points of failure that compromise the integrity of the RAID system. In a RAID setup, data is typically distributed across multiple drives to provide redundancy; however, if one drive fails while others are already experiencing errors, the RAID controller may not be able to reconstruct the lost data. This scenario emphasizes the vulnerability of RAID systems when facing simultaneous failures.

Understanding this concept is crucial for managing data integrity in environments using RAID arrays, as it underscores the importance of monitoring drive health and implementing regular backups, regardless of the redundancy that RAID offers.