Redundant Array of Independent Disks, or RAID, is a method of storing content on several hard disks simultaneously. A RAID can be software or hardware based on the hard drives which are used - physical or logical ones, however what’s common between them is that they all operate as just a single unit where information is kept. The biggest advantage of using a RAID is redundancy as the data on all of the drives is identical all of the time, so even in the event that a drive fails for whatever reason, the information will still be present on the other drives. The general performance is also better because the reading and writing processes will be split between different drives, so a single one won't be overloaded. There're different kinds of RAIDs where the effectiveness and fault tolerance may differ based on the specific setup - whether information is written on all of the drives in real time or it is written on one drive and then mirrored on another, what amount of drives are used for the RAID, and so on.

RAID in Cloud Web Hosting

The advanced cloud web hosting platform where all cloud web hosting accounts are made employs super fast SSD drives as an alternative to the traditional HDDs, and they function in RAID-Z. With this configuration, a number of hard drives operate together and at least one of them is a dedicated parity disk. Simply put, when data is written on the other 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 saved on the other ones, therefore absolutely nothing will be lost and there will be no service disturbances. This is another level of security for your info along with the revolutionary ZFS file system that uses checksums to make sure that all of the data on our servers is intact and is not silently corrupted.

RAID in Semi-dedicated Hosting

The SSD drives which are used for keeping any content uploaded to the semi-dedicated hosting accounts that we provide operate in RAID-Z. This is a specific configuration where one or more hard drives are employed for parity i.e. the system will include an extra bit to any data copied on this type of a disk drive. If a disk fails and is replaced with another one, what information will be copied on the latter shall 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 information on the new drive shall be accurate. During the process, the RAID will continue working adequately and the problematic drive will not have an effect on the proper operation of your websites in any respect. Working with SSDs in RAID-Z is an amazing addition to the ZFS file system which runs on our cutting-edge cloud platform with respect to preserving the integrity of your files because ZFS uses specific digital identifiers called checksums to prevent silent data corruption.


If you use one of our virtual private server plans, any content which you upload will be kept on SSD drives which work in RAID. At least 1 drive is employed for parity so as to ensure the integrity of the info. In simple terms, this is a special drive where information is copied with one bit added to it. In case a disk part of the RAID stops working, your Internet sites will continue working and when a new disk replaces the malfunctioning one, the bits of the data that will be cloned on it are calculated using the healthy and the parity drives. That way, any probability of corrupting data throughout the process is averted. We also use regular hard disks that operate 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 failures.