An US-based organization decided to implement a RAID storage technology for their data backup plan. John wants to setup a RAID level that require a minimum of six drives but will meet high fault tolerance and with a high speed for the data read and write operations.
What RAID level is John considering to meet this requirement?
A . RAID level 1
B . RAID level 10
C . RAID level 5
D . RAID level 50
Answer: D
Explanation:
RAID level 50, also known as RAID 5+0, combines the features of RAID 5 and RAID 0. It requires a
minimum of six drives and offers high fault tolerance and high speed for data read and write operations. RAID 50 arrays are created by striping data across RAID 5 arrays, which are themselves striped sets with distributed parity. This configuration provides both the speed of RAID 0 and the redundancy of RAID 51.
Reference: The TechTarget article on “RAID 50: How to select the right RAID level” explains that RAID 50 is suitable for applications that require high reliability and can handle high request rates and high data transfer, with a lower cost of disks than RAID 101.
The DNSChecker RAID Calculator mentions that RAID 50 requires a minimum of six disks2.
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