What Statement Best Describes A Raid 5?

What statement best describes a raid 5?

• A RAID 5 array consist of at least 2 drive and the parity knowledge is written to give fault-tolerance across the drive.
• RAID 5 is considered as striped sets along with parity striped across all drives.
• RAID 5 consist of at least 3 drive and divide the parity information across the drives in the array.
• RAID 5 have four drive in which the first and last drives store the parity information.

Answer: The statement which best describes the RAID 5 is that it is considered as striped sets along with parity striped across all drives.

What is RAID 5?

RAID 5 is known as the redundant array of the independent disk which uses the disk striping along with parity, and the reason is the data are evenly striped and none disk is the bottleneck. In the situation of disk failure, the striping helps to reconstruct the data.

This method is the most used method of RAID, the usable storage is more in it as compared to RAID 1 and 10, while the performance is the same as to RAID 0. it has at least three hard disks and no limit in the maximum. Because the data is spread all over the drives. It is accepted as one of the secure configured methods among all the methods of RAID.

Working of RAID 5

RAID 5 is famous because it collects disks with both striping and parity. Striping is the method to store the segments of data in the different storage devices and the throughput and performance are improved with it. Striping of the disk with parity makes it reliable, redundant, and scalable.

For the redundancy, the parity comes in help. On the disk when the data is written, the parity is calculated at that time and written on the drives. On the other hand, mirroring mange, the various copies of the data in the volume in case of the failure. For storing data on one drive the other two data are joined and stored in the third drive and protect the data in case of failure of one disk.in RAID 5 without any downtime, the drive can be replaced as a hot-swapped process.

Pros and cons of the RAID 5

The benefit and the failure are present for each thing. RAID 5 has its pros and cons which are listed below:

Pros:

• RAID 5 is efficient and the performance among the various RAID configuration is best.
• It is common and best for files and applications with fixed or limited drives.
• It has a fast speed and is also reliable.
• It gives the fault tolerance and the data redundancy is cheaper.

Cons:

• It has a long rebuild time which is the disadvantage of it that causes the data loss.
• During the rebuild, if the disk failed the data will get lost permanently.
• Although the backup is given by it which is not equal to the disaster recovery setup which fine the hardware in on-premise and off-premise.