RAID, which is an acronym of Redundant Array of Independent Disks, is a software or hardware storage virtualization technology that allows a system to employ multiple hard drives as a single logical unit. In other words, all drives are used as one and the info on all of them is the same. This kind of a configuration has 2 huge advantages over using a single drive to save data - the first one is redundancy, so in the event that one drive stops working, the info will be accessible from the others, and the second one is better performance as the input/output, or reading/writing operations will be spread among multiple drives. There are different RAID types based on how many drives are used, if reading and writing are both done from all of the drives simultaneously, if data is written in blocks on one drive after another or is mirrored between drives in the same time, and many others. Determined by the particular setup, the fault tolerance and the performance could differ.
RAID in VPS Hosting
The physical servers where we create virtual private server use high-speed SSD drives which will boost the speed of your sites noticeably. The hard drives operate in RAID to make sure that you will not lose any data as a result of a power loss or a hardware malfunction. The production servers take advantage of many different drives where the data is kept and one disk is used for parity i.e. one bit is added to all of the data copied on it, which makes it much easier to recover the site content without any loss in the event a main drive fails. If you take advantage of our backup service, your information will be kept on an independent machine that uses standard hard-disk drives and though there's no parity one in this case, they are also in a RAID to guarantee that we will have a backup of your website content at all times. With this setup your data will always be safe because it will be available on many drives.