The full form of RAID is ” Redundant Array of Independent Disks .” This is one way to store data in multiple hard disks. When disks are arranged in a RAID configuration, then the computer sees them all on the same large disk. But they operate much better efficiently if we compare them with a single hard drive .
Since the data is spread across multiple disks, so the reading and writing operations can be in multiple disks at the same time. This speeds up hard drive access time by a considerable amount. Although hard disk performance cannot be improved by multiple hard drives as much as CPU performance can be increased by using multiple processors , but it is based on the same logic.
Whatever the benefits of RAID, they all come from a technique called ” striping “. The data stored in it is split between available drives. These ” stripes ” of data are usually a few megabytes large and are interleave between drives. This striping system also increases the mean time between failure (MTBF) and reading data.
This allows it to read more data accurately in a shorter time frame. The benefits of these RAID systems are noticeable only when you are storing large amounts of data. This is the reason, many web hosting and Internet Service Providers use RAID so that they store their data for their clients.