Redundant Array of Independent Disks, or RAID, is a way of storing content on several hard disks simultaneously. A RAID could be software or hardware depending on the drives which are used - physical or logical ones, however what’s common between them is that they all operate as a single unit where information is stored. The key advantage of employing a RAID is redundancy as the info on all of the drives is identical at all times, so even if a drive fails for some reason, the information will still be present on the remaining drives. The general performance will also improve since the reading and writing processes could be split between different drives, so a single one will not be overloaded. There're different kinds of RAIDs where the performance and fault tolerance may vary depending on the exact setup - whether your data is written on all drives real-time or it's written on a single drive and then mirrored on another, what number of drives are used for the RAID, etcetera.

RAID in Shared Website Hosting

Our state-of-the-art cloud hosting platform where all shared website hosting accounts are made employs super fast SSD drives instead of the traditional HDDs, and they function in RAID-Z. With this setup, numerous hard disk drives work together and at least a single one is a dedicated parity disk. Basically, when data is written on the rest of the drives, it's cloned on the parity one adding an extra bit. This is performed for redundancy as even if some drive fails or falls out of the RAID for some reason, the info can be rebuilt and verified thanks to the parity disk and the data saved on the other ones, thus practically nothing will be lost and there will be no service interruptions. This is another level of protection for your info along with the revolutionary ZFS file system that uses checksums to ensure that all data on our servers is undamaged and is not silently corrupted.

RAID in Semi-dedicated Servers

In case you host your Internet sites within a semi-dedicated server account from our firm, any content which you upload will be held on SSD drives which work in RAID-Z. With this kind of RAID, at least 1 of the disks is used for parity - when data is synchronized between the disks, an additional bit is included in it on the parity one. The purpose behind this is to guarantee the integrity of the information which is duplicated to a new drive if one of the disks in the RAID stops working since the content being copied on the brand new disk is recalculated from the data on the standard disk drives and on the parity one. An additional advantage of RAID-Z is the fact that even in the event that a hard drive fails, the system could switch to another one instantly without service disturbances of any kind. RAID-Z adds an additional level of safety for the content you upload on our cloud Internet hosting platform together with the ZFS file system which uses unique checksums as a way to authenticate the integrity of each file.

RAID in VPS Servers

If you use one of our VPS server solutions, any content which you upload will be saved on SSD drives which operate in RAID. At least a single drive is employed for parity to ensure the integrity of your info. In simple terms, this is a special drive where data is copied with one bit added to it. If a disk part of the RAID fails, your websites will continue working and when a new disk substitutes the flawed one, the bits of the info that will be duplicated on it are calculated using the healthy and the parity drives. That way, any probability of corrupting data during the process is avoided. We also employ standard hard disk drives which work in RAID for storing backup copies, so if you add this service to your VPS plan, your site content will be saved on multiple drives and you'll never need to worry about its integrity even in the event of multiple drive failures.