Redundant Array of Independent Disks, or RAID, is a way of saving content on a number of hard disk drives concurrently. A RAID might be software or hardware depending on the HDDs that are used - physical or logical ones, but what is common between them is that they all work as just one single unit where your information is stored. The top advantage of using a RAID is redundancy because the info on all drives is identical all of the time, so even in case some drive fails for whatever reason, the info will still be available on the remaining drives. The general performance is also better because the reading and writing processes could be split between a number of drives, so a single one can't be overloaded. There're different sorts of RAIDs where the performance and fault tolerance may vary depending on the exact setup - whether info is written on all drives real-time or it is written on one drive and after that mirrored on another, the number of drives are used for the RAID, etcetera.

RAID in Website Hosting

The cutting-edge cloud web hosting platform where all website hosting accounts are created employs super fast SSD drives rather than the classic HDDs, and they work in RAID-Z. With this setup, multiple hard disks operate together and at least one is a dedicated parity disk. In simple terms, when data is written on the rest of the drives, it's cloned on the parity one adding an extra bit. This is performed for redundancy as even in case a drive fails or falls out of the RAID for whatever reason, the data can be rebuilt and verified using the parity disk and the data stored on the other ones, which means that nothing will be lost and there will not be any service interruptions. This is an additional level of protection for your data along with the cutting-edge ZFS file system which uses checksums to ensure that all data on our servers is undamaged and is not silently corrupted.

RAID in Semi-dedicated Hosting

The SSD drives which are used for storing any site content uploaded to the semi-dedicated hosting accounts which we offer function in RAID-Z. This is a specific setup where one or more disk drives are used for parity i.e. the system will include an extra bit to any data copied on this type of a disk drive. In case that a disk fails and is substituted with a new one, what data will be duplicated on the latter shall be a mix calculated between the data on the remaining hard disks and that on the parity one. This is done to ensure that the info on the new drive will be accurate. During the process, the RAID will continue operating normally and the faulty drive won't have an effect on the adequate operation of your websites by any means. Working with SSDs in RAID-Z is an outstanding addition to the ZFS file system that runs on our advanced cloud platform with respect to preserving the integrity of your files as ZFS uses specific digital identifiers identified as checksums so as to avoid silent data corruption.


If you employ one of our virtual private server plans, any content you upload will be stored on SSD drives that function in RAID. At least one drive is intended for parity to ensure the integrity of the data. In simple terms, this is a special drive where data is copied with one bit added to it. In case a disk inside the RAID fails, your Internet sites will continue working and when a new disk takes the place of the defective one, the bits of the information that will be copied on it are calculated using the healthy and the parity drives. By doing this, any chance of corrupting data during the process is averted. We also use standard hard disk drives that work in RAID for storing backups, so should you add this service to your VPS package, your website content will be stored on multiple drives and you won't ever need to worry about its integrity even in the event of multiple drive breakdowns.