When using the server, you often see the hard disk raid. RAID is a redundant disk array, which combines multiple hard disk drives to make the entire disk array managed by the array controller to form a storage system according to certain requirements. The initial development purpose is to use multiple cheap small disks to replace expensive large disks to reduce costs. With the development of hard disk technology, today's disk arrays use redundant information to make them have the function of data protection.

Next, the professional server in-depth customization expert-Dao He will introduce the importance of the server as a disk array in detail!

Provide fault tolerance

Ordinary disk drives cannot provide fault tolerance, but disk arrays can provide fault tolerance through data verification. The server will write data to multiple disks. If a disk fails, the availability of information can still be guaranteed at this time. Important data will not be lost, nor will it delay the normal operation of the server.

Increase transmission rate

Disk arrays combine multiple disks into an array and use them as a single disk. The data is stored in segments in different hard disks. When data access changes, the related disks in the array work together. Significantly reduce the time of data storage, while also having better space and utilization.

The above are the two main functions of the server as a disk array.