Redundant Array of Independent Disks, or RAID, is a way of storing content on several hard drives at the same time. A RAID might be software or hardware depending on the hard drives which are used - physical or logical ones, but what is common between them is that they all function as one single unit where information is kept. The key advantage of employing a RAID is redundancy as the data on all of the drives will be the same all the time, so even in the event that one of the drives fails for some reason, the information will still be present on the rest of the drives. The general performance is enhanced as well as the reading and writing processes could be split between various drives, so a single one will never be overloaded. There are different kinds of RAIDs where the functionality and fault tolerance could differ based on the specific setup - whether your data is written on all the drives real-time or it is written on a single drive and then mirrored on another, the number of drives are used for the RAID, etc.

RAID in Website Hosting

The advanced cloud Internet hosting platform where all website hosting accounts are generated uses super fast NVMe drives as an alternative to the traditional HDDs, and they operate in RAID-Z. With this configuration, multiple hard disk drives function together and at least 1 is a dedicated parity disk. In simple terms, when data is written on the other drives, it is duplicated on the parity one adding an extra bit. This is carried out for redundancy as even if a drive fails or falls out of the RAID for whatever reason, the information can be rebuilt and verified using the parity disk and the data stored on the other ones, therefore nothing will be lost and there will not be any service disturbances. This is another level of security for your information in addition to the advanced ZFS file system that uses checksums to ensure that all the data on our servers is intact 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, all the content that you upload will be held on NVMe drives which work in RAID-Z. With this type of RAID, at least 1 of the disks is used for parity - when data is synced between the hard drives, an additional bit is included in it on the parity one. The purpose behind this is to guarantee the integrity of the info which is cloned to a new drive if one of the disks in the RAID breaks down because the content being copied on the brand new disk is recalculated from the data on the standard hard drives and on the parity one. An additional advantage of RAID-Z is the fact that even in the event that a disk drive stops working, the system can easily switch to another one immediately without service disruptions of any type. RAID-Z adds an additional level of safety for the content which you upload on our cloud hosting platform together with the ZFS file system that uses unique checksums in order to authenticate the integrity of each file.

RAID in VPS Servers

The physical servers where we generate VPS server employ super fast NVMe drives that will boost the speed of your sites significantly. The hard drives work in RAID to make sure that you will not lose any data due to a power loss or a hardware failure. The production servers use many different drives where the information is saved and one disk is used for parity i.e. one bit is added to all the information copied on it, which makes it easier to recover the website content without loss in the event a main drive fails. In case you use our backup service, your info will be kept on an individual machine that 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 make sure that we will have a backup copy of your content all of the time. With this particular setup your data will always be safe as it will be available on multiple drives.