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Question 66 - 312-40 discussion

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Rufus Sewell, a cloud security engineer with 5 years of experience, recently joined an MNC as a senior cloud security engineer. Owing to the cost-effective security features and storage services provided by AWS, his organization has been using AWS cloud-based services since 2014. To create a RAID, Rufus created an Amazon EBS volume for the array and attached the EBS volume to the instance where he wants to host the array. Using the command line, Rufus successfully created a RAID. The array exhibits noteworthy performance both in read and write operations with no overhead by parity control and the entire storage capacity of the array is used.

The storage capacity of the RAID created by Rufus is equal to the sum of disk capacity in the set, but the array is not fault tolerant. It is ideal for non-critical cloud data storage that must be read/written at a high speed.

Based on the given information, which of the following RAID is created by Rufus?

A.
RAID 0
Answers
A.
RAID 0
B.
RAID 5
Answers
B.
RAID 5
C.
RAID 1
Answers
C.
RAID 1
D.
RAID 6
Answers
D.
RAID 6
Suggested answer: A

Explanation:

Rufus has created a RAID 0 array, which is characterized by the following features:

1.Performance: RAID 0 is known for its high performance in both read and write operations because it uses striping, where data is split evenly across two or more disks without parity information.

1.No Overhead by Parity Control: RAID 0 does not use parity control, which means there is no redundancy in the data. This contributes to its high performance but also means there is no fault tolerance.

1.Storage Capacity: The total storage capacity of a RAID 0 array is equal to the sum of all the disk capacities in the set, as there is no disk space used for redundancy.

1.Lack of Fault Tolerance: RAID 0 is not fault-tolerant; if one disk fails, all data in the array is lost. Therefore, it is not recommended for critical data storage.

1.Use Case: It is ideal for non-critical data that requires high-speed reading and writing, such as temporary files or cache data.

Reference: RAID 0 is often used to improve the performance of disk I/O (input/output) and is suitable for environments where speed is more critical than data redundancy. However, due to its lack of fault tolerance, it is not recommended for storing critical data that cannot be easily replaced or recovered.

asked 18/09/2024
wilson tan
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