RAID, which is an acronym of Redundant Array of Independent Disks, is a software or hardware storage virtualization technology which permits a system to employ several hard drives as a single logical unit. To put it differently, all drives are used as one and the info on all of them is identical. This type of a setup has two huge advantages over using just a single drive to keep data - the first is redundancy, so if one drive doesn't work, the data will be accessed from the remaining ones, and the second is better performance because the input/output, or reading/writing operations will be spread among different drives. There're different RAID types in accordance with what amount of drives are used, if reading and writing are both executed from all drives at the same time, whether data is written in blocks on one drive after another or is mirrored between drives in the same time, and many others. Based on the exact setup, the fault tolerance and the performance could differ.

RAID in Shared Web Hosting

The hard drives that we use for storage with our innovative cloud Internet hosting platform are not the classic HDDs, but super fast solid-state drives (SSD). They work in RAID-Z - a special setup developed for the ZFS file system which we use. All of the content that you upload to your shared web hosting account will be saved on multiple hard drives and at least one shall be employed as a parity disk. This is a special drive where an additional bit is included to any content copied on it. In the event that a disk in the RAID stops functioning, it will be changed without any service disruptions and the info will be rebuilt on the new drive by recalculating its bits using the data on the parity disk along with that on the other disks. This is done to guarantee the integrity of the info and along with the real-time checksum verification which the ZFS file system runs on all drives, you won't ever need to worry about losing any data no matter what.

RAID in Semi-dedicated Hosting

The SSD drives which are used for keeping any website content uploaded to the semi-dedicated hosting accounts which we provide operate in RAID-Z. This is a specific setup where one or more drives are employed for parity i.e. the system will add an additional bit to any data copied on this kind of a disk drive. In case that a disk fails and is substituted with a new one, what information will be cloned on the latter shall be a mix calculated between the data on the other hard disks and that on the parity one. This is done to make sure that the data on the new drive will be accurate. Throughout the process, the RAID will continue working adequately and the faulty drive will not affect the proper operation of your websites in any respect. Using SSDs in RAID-Z is an amazing addition to the ZFS file system which runs on our advanced cloud platform with regard to preserving the integrity of your files as ZFS uses specific digital identifiers referred to as checksums in order to prevent silent data corruption.

RAID in VPS Hosting

If you employ one of our virtual private server solutions, any content you upload will be stored on SSD drives which function in RAID. At least one drive is used for parity so as to ensure the integrity of the information. In simple terms, this is a special drive where data is copied with one bit added to it. If a disk within the RAID fails, your Internet sites will continue working and when a new disk substitutes the defective one, the bits of the info that will be duplicated on it are calculated by using the healthy and the parity drives. This way, any probability of corrupting data throughout the process is avoided. We also employ conventional hard disks that work in RAID for storing backups, so in case you include this service to your VPS plan, your website content will be kept on multiple drives and you won't ever need to worry about its integrity even in the event of multiple drive failures.