A technician is configuring a server with eight available drive bays.

When selecting a RAID level, both redundancy and storage efficiency must be considered:

RAID 1 mirrors data, providing high redundancy but reducing available storage to 50%. With eight drives, only four drives' worth of space would be available.

RAID 5 uses striping with distributed parity. It provides good storage efficiency (n-1) but can only tolerate one drive failure.

RAID 6 is similar to RAID 5 but uses dual parity, allowing two drives to fail while still maintaining data integrity. However, it reduces available storage to (n-2).

RAID 10 (also known as RAID 1+0) combines mirroring and striping. It provides excellent redundancy and performance, allowing multiple drive failures as long as they aren't in the same mirrored pair. Storage efficiency is 50%, but the redundancy and performance benefits outweigh this trade-off in high-availability environments.

Since the technician requires both maximum redundancy and high available storage, RAID 10 is the best choice.