Martha works as a network administrator for uCertify Inc. The company's database is heavily read oriented. She is trying to select the best method for handling the situation of a hard drive crashing, which should also be a cost effective option that can provide both performance and redundancy. Which of the following RAID levels should Martha use?
A) RAID 10
B) RAID 0
C) RAID 5
D) RAID 3
C) RAID 5
Martha should use RAID 5, which provides striping with parity thus providing backup if the hard drive crashes. It contains a minimum of three disks, if one drive fails, the parity information on the remaining drives can be used to reconstruct the lost data. In RAID 5, disk performance is enhanced because more than one read and write can occur simultaneously. It is the best cost effective option providing both performance and redundancy for databases heavily read oriented.
RAID 10 is a possible option but it is not a cost effective option compared to RAID 5.
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