RAID originally means redundant array of inexpensive disks, and now it commonly stands for redundant array of independent disks. RAID refers to a data storage virtualization technology of combining a lot of inexpensive disks into a single logical unit to improve the hard drive performance and achieve data redundancy. By using this technology, the data will be divided into many sections and are stored on multiple hard disks. In RAID, multiple hard drives can transfer data at the same time. Moreover, RAID has great tolerance for errors, which makes it safe to your data security.
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