A customer has a server running a database that requires a c

A customer has a server running a database that requires a continual updating set for RAID 5 in order to protect the valuable data. He complains that performance on this server has degraded continually since it was installed. What do you say is the likely problem?

A. Immediately after the server was installed, one of the hard drives failed.

B. RAID 5 performs poorly when a large number of write operations must occur.

C. RAID 5 performs poorly when a large number of read operations must occur.

D. RAID 5 inherently performs poorly under all circumstances, but it is used because of its fault tolerance features.

Solution

Answer:

A)Immediately after the server was installed, one of the hard drives failed.

Explanation:

In RAID 5 Stripes data across three or more drives and uses parity checking, so that if one drive fails, the other drives can re-create the data stored on the failed drive by using the parity information.

--> Data is not duplicated, and therefore, makes better use of volume capacity.