What are the six basic RAID levels, and how does each differ?

What will be an ideal response?

The six basic RAID levels are as follows:
* RAID level 0-Striping with no other redundancy features (such as no parity or mirroring) is RAID level 0. Striping is used to extend disk life and improve performance. Data access on striped volumes is fast because of the way the data is divided into blocks that are quickly accessed through multiple disk reads and data paths.
* RAID level 1-This level employs simple disk mirroring and provides a means to duplicate the operating system files in the event of a disk failure.
* RAID level 2-This uses an array of disks whereby the data is striped across all disks in the array (also called bit-level striping). Also, in this method, all disks store error-correction information that enables the array to reconstruct data from a failed disk.
* RAID level 3-Like level 2, RAID level 3 uses disk striping and stores error-correcting information, but the information is only written to one disk in the array. If that disk fails, the array cannot rebuild its contents.
* RAID level 4-This level stripes data and stores error-correcting information on all drives, in a manner similar to level 2. An added feature is its ability to perform checksum verification. The checksum is a sum of bits in a file. When a file is re-created after a disk failure, the checksum previously stored for that file is checked against the actual file after it is reconstructed. If the two do not match, you will know that the file might be corrupted.
* RAID level 5-Level 5 combines the best features of RAID, including striping, error correction, and checksum verification. Windows Server 2016 supports level 5, calling it "stripe set with parity on basic disks" or a RAID-5 volume (for dynamic disks), depending on the disk architecture. Whereas level 4 stores checksum data on only one disk, level 5 spreads both error-correction and checksum data over all of the disks, so there is no single point of failure.