You are the Microsoft Project administrator for your organization. You are planning your backups and data redundancy approach for your SQL and Project Servers. One of the problems with data backups is that should a disk fail you will lose the information from the time of the last backup to the failed disk. You would like to create a fast and reliable data redundancy approach for your servers. Which hardware solution can you use to offer the best performance and data redundancy?

A.
RAID 0

B.
RAID 1

C.
RAID 4

D.
RAID 5

Explanation:
RAID 5, striping with parity, is the fastest of the choices and provides parity information across multiple drives.
Answer option A is incorrect. RAID 0 is a stripe set, but it does not provide parity information in case of a fault.
Answer option B is incorrect. RAID 1 is a mirror set and it is a reliable, solid option for servers. RAID 5, however, provides a faster read/write performance than a mirror set so this choice isn’t the best option.
Answer option C is incorrect. RAID 4 is a stripe set with all of the parity information on just one drive. It also writes the data in larger blocks and is not as efficient as RAID 5.