RAID, or Redundant Array of Independent Disks, is a technology of storing data on multiple hard drives which operate together as one single logical unit. The drives can be physical or logical i.e. in the second case one drive is split into different ones using virtualization software. In any case, exactly the same data is saved on all drives and the key benefit of using this kind of a setup is that in the event that a drive stops working, the data will still be available on the other ones. Employing a RAID also enhances the overall performance as the input and output operations will be spread among a couple of drives. There are several types of RAID based on how many hard disks are used, whether writing is done on all of the drives in real time or just on a single one, and how the info is synced between the hard drives - whether it is written in blocks on one drive after another or all of it is mirrored from one on the others. All of these factors mean that the error tolerance and the performance between the various RAID types can vary.

RAID in Shared Hosting

The NVMe drives that our cutting-edge cloud Internet hosting platform employs for storage function in RAID-Z. This sort of RAID is created to work with the ZFS file system which runs on the platform and it takes advantage of the so-called parity disk - a specific drive where information kept on the other drives is duplicated with an extra bit added to it. In the event that one of the disks stops functioning, your websites will continue working from the other ones and after we replace the problematic one, the info which will be copied on it will be rebuilt from what is stored on the other drives together with the data from the parity disk. This is performed so as to be able to recalculate the bits of every file properly and to verify the integrity of the info copied on the new drive. This is an additional level of security for the info you upload to your shared hosting account together with the ZFS file system which analyzes a unique digital fingerprint for each and every file on all drives in real time.

RAID in Semi-dedicated Hosting

The data uploaded to any semi-dedicated hosting account is stored on NVMe drives which work in RAID-Z. One of the drives in this kind of a configuration is used for parity - any time data is copied on it, an extra bit is added. If a disk happens to be problematic, it will be taken out of the RAID without interrupting the work of the Internet sites because the data will load from the other drives, and when a brand new drive is included, the info that will be cloned on it will be a combination between the information on the parity disk and data saved on the other hard drives in the RAID. That is done in order to guarantee that the information that is being cloned is accurate, so as soon as the new drive is rebuilt, it could be included in the RAID as a production one. This is one more warranty for the integrity of your data since the ZFS file system which runs on our cloud Internet hosting platform compares a special checksum of all the copies of your files on the separate drives to avoid any probability of silent data corruption.


If you take advantage of one of our virtual private server packages, any content you upload will be stored on NVMe drives that function in RAID. At least one drive is employed for parity to ensure the integrity of the data. In simple terms, this is a special drive where info is copied with one bit added to it. In case a disk from the RAID fails, your Internet sites will continue working and when a new disk substitutes the faulty one, the bits of the info that will be duplicated on it are calculated using the healthy and the parity drives. By doing this, any probability of corrupting data during the process is avoided. We also employ regular hard drives which work in RAID for storing backups, so if you add this service to your VPS plan, your content will be saved on multiple drives and you won't ever have to worry about its integrity even in the event of multiple drive failures.