RAID, which stands short for Redundant Array of Independent Disks, is a software or hardware storage virtualization technology which permits a system to take advantage of many hard drives as a single logical unit. In other words, all drives are used as one and the data on all of them is the same. Such a configuration has two huge advantages over using just a single drive to store data - the first one is redundancy, so in case one drive stops working, the data will be accessed through the remaining ones, and the second one is better performance because the input/output, or reading/writing operations will be distributed among different drives. You can find different RAID types in accordance with how many drives are used, whether reading and writing are both executed from all the drives at the same time, if data is written in blocks on one drive after another or is mirrored between drives in the same time, etc. Based on the particular setup, the fault tolerance and the performance could differ.

RAID in Shared Hosting

Our revolutionary cloud Internet hosting platform where all shared hosting accounts are generated uses super fast SSD drives instead of the traditional HDDs, and they work in RAID-Z. With this configuration, numerous hard drives function together and at least one of them is a dedicated parity disk. In simple terms, when data is written on the other drives, it's duplicated on the parity one adding an extra bit. This is performed for redundancy as even if a drive fails or falls out of the RAID for whatever reason, the data can be rebuilt and verified thanks to the parity disk and the data stored on the other ones, which means that practically nothing will be lost and there won't be any service disturbances. This is another level of security for your info along with the state-of-the-art ZFS file system which uses checksums to ensure that all data on our servers is intact and is not silently corrupted.

RAID in Semi-dedicated Servers

The SSD drives which are used for saving any content uploaded to the semi-dedicated server accounts that we offer work in RAID-Z. This is a specific setup where one or more hard drives are used for parity i.e. the system will add an extra bit to any data copied on such a disk drive. In case that a disk fails and is substituted with another one, what data will be duplicated on the latter will be a combination calculated between the data on the remaining hard disks and that on the parity one. This is done to guarantee that the info on the new drive shall be correct. Throughout the process, the RAID will continue functioning normally and the problematic drive will not impact the adequate operation of your sites by any means. Working with SSDs in RAID-Z is an impressive addition to the ZFS file system that runs on our cutting-edge cloud platform with respect to preserving the integrity of your files since ZFS uses specific digital identifiers referred to as checksums so as to avoid silent data corruption.

RAID in VPS Servers

The physical servers where we generate VPS server work with fast SSD drives that will raise the speed of your Internet sites substantially. The drives operate in RAID to guarantee that you won't lose any information because of a power loss or a hardware failure. The production servers take advantage of multiple drives where the info is stored and one disk is used for parity i.e. one bit is added to all of the information copied on it, which makes it much easier to restore the website content without loss in case a main drive stops working. If you choose our backup service, your data will be saved on a separate machine that uses standard hard-disk drives and though there is no parity one in this case, they are also in a RAID to ensure that we will have a backup of your content at all times. With this particular configuration your information will always be safe since it will be available on multiple drives.