RAID, or Redundant Array of Independent Disks, is a technology of keeping data on multiple hard disks which operate together as one single logical unit. The drives could be physical or logical i.e. in the latter case a single drive is divided into different ones using virtualization software. In either case, exactly the same information is stored on all of the drives and the main benefit of using this type of a setup is that if a drive breaks down, the data shall still be available on the remaining ones. Employing a RAID also boosts the overall performance as the input and output operations will be spread among a couple of drives. There are several kinds of RAID dependant upon how many hard disks are used, whether writing is done on all the drives in real time or just on one, and how the information 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 error tolerance and the performance between the different RAID types could differ.

RAID in Cloud Hosting

Our state-of-the-art cloud Internet hosting platform where all cloud hosting accounts are created employs super fast SSD drives as an alternative to the classic HDDs, and they function in RAID-Z. With this configuration, several hard disks work together and at least a single one is a dedicated parity disk. Simply put, when data is written on the remaining drives, it is 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 some reason, the information can be rebuilt and verified thanks to the parity disk and the data stored on the other ones, therefore practically nothing will be lost and there will not be any service disorders. This is an additional level of security for your info in addition to the cutting-edge ZFS file system which uses checksums to guarantee that all the data on our servers is intact and is not silently corrupted.

RAID in Semi-dedicated Hosting

The SSD drives that are used for keeping any site content uploaded to the semi-dedicated hosting accounts which we offer function in RAID-Z. This is a special setup where one or more drives are employed for parity i.e. the system will include an extra bit to any data cloned on this kind of a drive. In the event that a disk fails and is substituted with a new one, what data will be cloned on the latter shall be a combination calculated between the data on the other hard disks and that on the parity one. This is done to ensure that the data on the new drive will be accurate. During the procedure, the RAID will continue operating adequately and the faulty drive will not have an impact on the proper operation of your sites at all. Working with SSDs in RAID-Z is an excellent addition to the ZFS file system which runs on our state-of-the-art cloud platform with regards to preserving the integrity of your files since ZFS uses special digital identifiers known as checksums so as to prevent silent data corruption.

RAID in VPS Web Hosting

The physical servers where we generate virtual private server use fast SSD drives which will raise the speed of your websites substantially. The drives operate in RAID to ensure that you will not lose any data because of a power loss or a hardware breakdown. The production servers use a variety of drives where the data is stored and one disk is used for parity i.e. one bit is added to all of the data copied on it, that makes it much easier to recover the content without any loss in the event a main drive fails. In case you pick our backup service, the info will be stored on an individual machine which 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 content all the time. With this particular configuration your info will always be safe as it will be available on many drives.