Redundant Array of Independent Disks, or RAID, is a way 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, however what is common between them is the fact that they all function as just one single unit where information is saved. The key advantage of employing a RAID is redundancy because the info on all drives will be identical all of the time, so even in case some drive fails for some reason, the data will still be present on the remaining drives. The general performance will also improve since the reading and writing processes will be split between a number of drives, so a single one won't be overloaded. There're different types of RAIDs where the performance and fault tolerance could differ depending on the exact setup - whether data 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, etcetera.

RAID in Shared Hosting

The disk drives which we use for storage with our top-notch cloud web hosting platform are not the traditional HDDs, but high-speed solid-state drives (SSD). They operate in RAID-Z - a special setup designed for the ZFS file system which we use. All of the content that you upload to the shared hosting account will be stored on multiple hard disks and at least one will be employed as a parity disk. This is a special drive where an additional bit is included to any content copied on it. If a disk in the RAID fails, it'll be replaced without service disruptions and the information will be recovered on the new drive by recalculating its bits using the data on the parity disk plus that on the other disks. This is done to guarantee the integrity of the data and along with the real-time checksum validation that the ZFS file system runs on all drives, you will never need to concern yourself with the loss of any data no matter what.

RAID in Semi-dedicated Hosting

The SSD drives that are used for storing any website content uploaded to the semi-dedicated hosting accounts which we offer operate in RAID-Z. This is a special configuration where one or more drives are used for parity i.e. the system will add an extra bit to any data cloned on this kind of a disk drive. In case that a disk fails and is substituted with a new one, what data will be copied on the latter shall be a combination calculated between the data on the other disks and that on the parity one. This is done to guarantee that the data on the new drive will be accurate. Throughout the procedure, the RAID will continue operating normally and the malfunctioning drive will not have an impact on the proper operation of your Internet sites in any respect. Working with SSDs in RAID-Z is an amazing addition to the ZFS file system that runs on our state-of-the-art cloud platform with regards to preserving the integrity of your files as ZFS uses special digital identifiers known as checksums in order to prevent silent data corruption.

RAID in VPS Hosting

The physical servers where we generate virtual private server employ fast SSD drives which will boost the speed of your sites substantially. The hard disks function in RAID to ensure that you won't lose any data as a result of a power loss or a hardware malfunction. The production servers employ a variety of drives where the information is kept and one disk is used for parity i.e. one bit is added to all of the info copied on it, that makes it easier to recover the website content without loss in the event a main drive stops working. If you take advantage of our backup service, the info will be stored on an individual machine which uses standard hard-disk drives and although there's no parity one in this case, they are also in a RAID to ensure that we will have a backup copy of your site content all the time. With this configuration your information will always be safe since it will be available on multiple drives.