RAID, which is short for Redundant Array of Independent Disks, is a software or hardware storage virtualization technology that makes it possible for a system to use many hard drives as one single logical unit. In other words, all the drives are used as one and the data on all of them is identical. Such a setup has 2 huge advantages over using a single drive to keep data - the first is redundancy, so in case one drive doesn't work, the information will be accessed through the others, and the second is better performance as the input/output, or reading/writing operations will be distributed among several drives. You can find different RAID types in accordance with the number of drives are used, if reading and writing are both done from all drives simultaneously, whether data is written in blocks on one drive after another or is mirrored between drives in the same time, etcetera. Depending on the particular setup, the error tolerance and the performance vary.
RAID in Cloud Website Hosting
The revolutionary cloud web hosting platform where all cloud website hosting accounts are generated employs quick SSD drives as opposed to the traditional HDDs, and they function in RAID-Z. With this setup, a number of hard disks work together and at least a single one is a dedicated parity disk. Put simply, when data is written on the remaining drives, it's copied on the parity one adding an extra bit. This is carried out for redundancy as even in case a drive fails or falls out of the RAID for whatever reason, the information can be rebuilt and verified thanks to the parity disk and the data recorded on the other ones, thus not a thing will be lost and there will be no service disorders. This is an additional level of security for your info along with the cutting-edge ZFS file system which uses checksums to make sure that all the data on our servers is intact and is not silently corrupted.