Redundant Array of Independent Disks, or RAID, is a way of saving content on multiple hard disks concurrently. A RAID could be software or hardware based on the HDDs that are used - physical or logical ones, still what’s common between them is the fact that they all operate as one single unit where info is kept. The top advantage of employing a RAID is redundancy since the information on all of the drives shall be the same all of the time, so even in the event that some drive fails for some reason, the info will still be available on the rest of the drives. The overall performance will also improve since the reading and writing processes could be split between multiple drives, so a single one will never be overloaded. There are different kinds of RAIDs where the functionality and fault tolerance may vary depending on the particular setup - whether info is written on all of the drives in real time or it is written on a single drive and then mirrored on another, what amount of drives are used for the RAID, etcetera.

RAID in Shared Website Hosting

Our cutting-edge cloud hosting platform where all shared website hosting accounts are made employs fast SSD drives as an alternative to the standard HDDs, and they work in RAID-Z. With this configuration, numerous hard drives work together and at least one of them is a dedicated parity disk. Put simply, when data is written on the remaining drives, it's copied on the parity one adding an extra bit. This is done for redundancy as even if a drive fails or falls out of the RAID for some reason, the data can be rebuilt and verified thanks to the parity disk and the data saved on the other ones, which means that not a thing will be lost and there won't be any service disorders. This is an additional level of security for your information together 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 Servers

In case you host your Internet sites in a semi-dedicated server account from our company, all the content which you upload will be kept on SSD drives which operate in RAID-Z. With this type of RAID, at least one of the hard drives is used for parity - when data is synced between the disks, an additional bit is included in it on the parity one. The reasoning behind this is to guarantee the integrity of the data that is cloned to a new drive in the event that one of the disks in the RAID fails because the website content being copied on the new disk is recalculated from the information on the standard hard drives and on the parity one. An additional advantage of RAID-Z is that even in the event that a disk drive stops functioning, the system can easily switch to another one right away without service disturbances of any type. RAID-Z adds an additional level of protection for the content that you upload on our cloud web hosting platform together with the ZFS file system that uses unique checksums in order to verify the integrity of each file.

RAID in VPS Servers

The SSD drives that we use on the physical machines where we set up VPS servers function in RAID to ensure that any content which you upload will be available and intact at all times. At least a single drive is used for parity - one bit of information is added to any data cloned on it. In case a main drive breaks down, it is replaced and the info which will be cloned on it is calculated between the remaining drives and the parity one. That’s done to ensure that the needed data is copied and that no file is corrupted since the new drive will be a part of the RAID afterwards. In addition, we use hard disk drives operating in RAID on the backup servers, so in the event that you add this upgrade to your VPS plan, you will use an even more reliable web hosting service since your content will be available on multiple drives irrespective of any sort of sudden hardware malfunction.