Redundant Array of Independent Disks, or RAID, is a method of keeping content on multiple hard drives at the same time. A RAID can be software or hardware based on the drives that are used - physical or logical ones, yet what is common between them is that they all function as just one single unit where info is stored. The top advantage of employing a RAID is redundancy because the information on all of the drives will be identical all of the time, so even if a drive fails for whatever reason, the information will still be available on the remaining drives. The overall performance is also better since the reading and writing processes can be split between different drives, so a single one won't be overloaded. There are different types of RAIDs where the efficiency and fault tolerance can vary based on the exact setup - whether your data is written on all the drives real-time or it is written on a single drive and afterwards mirrored on another, the number of drives are used for the RAID, and so on.

RAID in Shared Web Hosting

The SSD drives which our cutting-edge cloud Internet hosting platform uses for storage operate in RAID-Z. This kind of RAID is intended to work with the ZFS file system that runs on the platform and it employs the so-called parity disk - a specific drive where data located on the other drives is copied with an additional bit added to it. In the event that one of the disks fails, your Internet sites shall continue working from the other ones and as soon as we replace the bad one, the data that will be cloned on it will be rebuilt from what is stored on the remaining drives as well as the data from the parity disk. This is done so as to be able to recalculate the bits of each and every file properly and to confirm the integrity of the info duplicated on the new drive. This is one more level of security for the information which you upload to your shared web hosting account along with the ZFS file system that compares a special digital fingerprint for every single file on all of the hard drives in real time.

RAID in Semi-dedicated Hosting

The SSD drives that are used for keeping any content uploaded to the semi-dedicated hosting accounts that we provide work in RAID-Z. This is a special configuration where one or more hard drives are used for parity i.e. the system will include an extra bit to any data duplicated on this kind of a hard drive. In case that a disk fails and is substituted with another one, what data will be duplicated on the latter will be a combination calculated between the data on the other drives and that on the parity one. This is done to make sure that the info on the new drive shall be correct. Throughout the procedure, the RAID will continue functioning normally and the problematic drive won't have an effect on the normal operation of your websites at all. Using SSDs in RAID-Z is an outstanding addition to the ZFS file system that runs on our cutting-edge cloud platform with respect to preserving the integrity of your files because ZFS uses specific digital identifiers identified as checksums so as to prevent silent data corruption.

RAID in VPS

The physical servers where we make virtual private server use high-speed SSD drives that will raise the speed of your sites noticeably. The disk drives function in RAID to guarantee that you won't lose any information as a result of a power loss or a hardware breakdown. The production servers use a variety of drives where the info is saved 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 restore the site content without any loss if a main drive fails. If you choose our backup service, your information will be kept on a separate machine which uses standard hard-disk drives and despite the fact that there isn't a parity one in this case, they are also in a RAID to ensure that we will have a backup of your content all the time. With this particular configuration your info will always be safe since it will be available on multiple drives.