Raid is a very efficient and secure storage system. It combines several inexpensive hard disks into a hard disk array, The aim is to make the performance reach or exceed an expensive and huge capacity hard disk.
According to different needs and budgets, the raid can be divided into many types. Basically, Raid0, Raid1, Raid5, Raid10 are more common. Next, we will talk about the classification of the raid and how to restore raid.