Which storage configuration provides fault tolerance for a hypervisor?

RAID 1 is the correct choice because it utilizes mirroring, which means that data is duplicated across two or more drives. In a RAID 1 setup, if one drive fails, the other drive continues to operate, providing a level of fault tolerance. This redundancy is crucial for environments using a hypervisor, where maintaining system availability and data integrity is essential.

While other RAID configurations also provide fault tolerance, they do so in different ways. RAID 5, for instance, employs striping with parity, combining data across multiple disks with a single parity disk. This allows for recovery from a single drive failure; however, it introduces complexity in terms of write performance, which may not always be ideal for hypervisor environments. RAID 10, on the other hand, combines both mirroring and striping but requires a minimum of four drives and may be more resource-intensive than necessary for some scenarios.

RAID 0 offers no fault tolerance at all, as it involves striping data without any redundancy. Therefore, it is not suitable for environments where uptime and data preservation are crucial. In summary, RAID 1 stands out as a straightforward and effective solution for achieving fault tolerance specifically tailored to the needs of hypervisors.