A system administrator is configuring an array with 48 drives. The array stores mission-critical data
for an application that requires large logical volumes. The array must support simultaneous
failures of any two drives without downtime or data loss.
How must the RAID level be configured to meet these requirements?

A.
RAID0

B.
RAID 1+0

C.
RAID 5

D.
RAID 6

Explanation:
http://h18004.www1.hp.com/products/quickspecs/14227_div/14227_div.pdf (page 4,
fault tolerance, second bullet)