RAID, or Redundant Array of Independent Disks, is a technology of keeping data on multiple hard drives which work together as one single logical unit. The drives can be physical or logical i.e. in the second case one drive is divided into separate ones using virtualization software. Either way, identical information is saved on all the drives and the key benefit of using this kind of a setup is that if a drive stops working, the data will still be available on the other ones. Using a RAID also improves the performance because the input and output operations will be spread among a couple of drives. There are several kinds of RAID depending on how many drives are used, whether writing is carried out on all of the drives in real time or just on a single one, and how the info is synchronized between the hard drives - whether it is recorded in blocks on one drive after another or it is mirrored from one on the others. All these factors suggest that the fault tolerance and the performance between the different RAID types can vary.

RAID in Web Hosting

The SSD drives that our cutting-edge cloud Internet hosting platform employs for storage work in RAID-Z. This type of RAID is designed to work with the ZFS file system which runs on the platform and it uses the so-called parity disk - a special drive where info kept on the other drives is duplicated with an extra bit added to it. If one of the disks stops functioning, your websites shall continue working from the other ones and once we replace the problematic one, the information which will be cloned on it will be recovered from what is stored on the remaining drives along with the data from the parity disk. This is done so as to be able to recalculate the elements of every file properly and to authenticate the integrity of the info duplicated on the new drive. This is one more level of security for the content you upload to your web hosting account in addition to the ZFS file system that analyzes a unique digital fingerprint for every single file on all of the hard drives in real time.

RAID in Semi-dedicated Hosting

If you host your websites within a semi-dedicated hosting account from our firm, any content which you upload will be kept on SSD drives which work in RAID-Z. With this kind of RAID, at least 1 of the disks is used for parity - when data is synced between the hard drives, an extra bit is included in it on the parity one. The idea behind this is to guarantee the integrity of the info that is copied to a new drive in case one of the hard drives in the RAID fails because the website content being copied on the new disk is recalculated from the information on the standard disk drives and on the parity one. Another advantage of RAID-Z is the fact that even in the event that a disk drive fails, the system could switch to a different one right away without service disturbances of any type. RAID-Z adds one more level of protection for the content which you upload on our cloud Internet hosting platform together with the ZFS file system which uses unique checksums in order to authenticate the integrity of each and every file.

RAID in VPS Hosting

The physical servers where we generate virtual private server work with super fast SSD drives that will raise the speed of your websites substantially. The hard drives operate in RAID to make sure that you won't lose any data as a result of a power loss or a hardware breakdown. The production servers employ many different drives where the data is saved and one disk is used for parity i.e. one bit is added to all the information copied on it, which makes it much easier to restore the website content without loss in the event a main drive breaks down. If you take advantage of our backup service, your info will be stored on an individual machine that uses standard hard-disk drives and even though there's no parity one in this case, they are also in a RAID to make sure that we will have a backup of your website content all the time. With this configuration your info will always be safe because it will be available on many disk drives.