RAID, which is short for Redundant Array of Independent Disks, is a software or hardware storage virtualization technology which allows a system to take advantage of multiple hard drives as a single logical unit. Simply put, all the drives are used as one and the information on all of them is the same. This type of a setup has two key advantages over using just a single drive to store data - the first one is redundancy, so if one drive fails, the data will be accessed from the remaining ones, and the second is better performance as the input/output, or reading/writing operations will be distributed among different drives. There're different RAID types in accordance with what amount of drives are used, if reading and writing are both executed from all the drives simultaneously, whether data is written in blocks on one drive after another or is mirrored between drives in the same time, and so on. Depending on the particular setup, the fault tolerance and the performance vary.

RAID in Shared Website Hosting

Our advanced cloud hosting platform where all shared website hosting accounts are made uses quick SSD drives as an alternative to the traditional HDDs, and they function in RAID-Z. With this setup, multiple hard disk drives work together and at least a single one is a dedicated parity disk. In simple terms, when data is written on the rest of the drives, it's copied on the parity one adding an extra bit. This is done for redundancy as even if some drive fails or falls out of the RAID for whatever reason, the information can be rebuilt and verified thanks to the parity disk and the data saved on the other ones, which means that nothing will be lost and there will be no service disorders. This is an additional level of protection for your information along with the top-notch ZFS file system which uses checksums to guarantee that all data on our servers is intact and is not silently corrupted.

RAID in Semi-dedicated Servers

The SSD drives that are used for storing any website content uploaded to the semi-dedicated server accounts that we offer work in RAID-Z. This is a special configuration where one or more disk drives are used for parity i.e. the system will include an extra bit to any data cloned on such a drive. In the event that a disk fails and is substituted with another one, what information will be copied on the latter shall be a mix calculated between the data on the other drives and that on the parity one. This is done to make sure that the data on the new drive shall be correct. Throughout the process, the RAID will continue operating normally and the faulty drive will not have an effect on the normal operation of your sites in any respect. Working with SSDs in RAID-Z is an impressive addition to the ZFS file system which runs on our cutting-edge cloud platform with respect to preserving the integrity of your files since ZFS uses unique digital identifiers known as checksums in order to avoid silent data corruption.

RAID in VPS Servers

The physical servers where we make VPS server employ fast SSD drives which will boost the speed of your sites noticeably. The hard drives work in RAID to ensure that you will not lose any info because of a power loss or a hardware malfunction. The production servers use multiple drives where the info is saved and one disk is used for parity i.e. one bit is added to all the info copied on it, that makes it much easier to restore the website content without loss in the event a main drive fails. In case you choose our backup service, your information will be kept on an individual machine that uses standard hard-disk drives and though there is no parity one in this case, they are also in a RAID to guarantee that we will have a backup copy of your site content at all times. With this configuration your info will always be safe as it will be available on many disk drives.