RAID, which is an acronym of Redundant Array of Independent Disks, is a software or hardware storage virtualization technology which allows a system to use a number of hard drives as a single logical unit. To put it differently, all of the drives are used as one and the info on all of them is the same. Such a configuration has 2 key advantages over using a single drive to save data - the first one is redundancy, so in the event that one drive doesn't work, the info will be accessed from the remaining ones, and the second one is improved performance since the input/output, or reading/writing operations will be distributed among several drives. There are different RAID types based on the number of drives are used, if reading and writing are both handled 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, etcetera. Based on the exact setup, the error tolerance and the performance may vary.

RAID in Shared Website Hosting

The SSD drives which our cutting-edge cloud Internet hosting platform employs for storage function in RAID-Z. This type of RAID is developed to work with the ZFS file system which runs on the platform and it works by using the so-called parity disk - a special drive where information kept on the other drives is cloned with an additional bit added to it. If one of the disks stops functioning, your sites will continue working from the other ones and as soon as we replace the bad one, the info that will be cloned on it will be rebuilt from what is stored on the other drives as well as the information from the parity disk. This is performed in order to be able to recalculate the bits of each and every file correctly and to confirm the integrity of the info cloned on the new drive. This is an additional level of security for the information you upload to your shared website hosting account in addition to the ZFS file system that analyzes a unique digital fingerprint for each file on all the hard drives in real time.

RAID in Semi-dedicated Servers

The SSD drives which are used for keeping any site content uploaded to the semi-dedicated server accounts which we provide function 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 additional bit to any data duplicated on such a disk drive. In case that a disk fails and is substituted with another one, what information will be cloned on the latter shall be a mix calculated between the data on the other disks and that on the parity one. This is done to make sure that the info on the new drive will be correct. During the process, the RAID will continue working normally and the malfunctioning drive will not have an impact on the adequate operation of your Internet sites in any respect. Using SSDs in RAID-Z is a superb addition to the ZFS file system which runs on our top-notch cloud platform with regard to preserving the integrity of your files as ZFS uses specific digital identifiers referred to as checksums in order to prevent silent data corruption.

RAID in VPS Servers

All VPS server accounts that we provide are generated on physical servers which employ SSD drives functioning in RAID. At least one drive is used for parity - one extra bit is included in the info duplicated on it and in case a main disk breaks down, this bit makes it simpler to recalculate the bits of the files on the damaged disk drive so that the accurate info is restored on the new drive added to the RAID. In the mean time, your Internet sites will still be online because all the information will still load from at least one more hard drive. In the event that you add routine backups to your VPS package, a copy of your info will be kept on standard hard drives that also operate in RAID because we want to make sure that any type of website content you upload will be protected all the time. Employing multiple hard disks in RAID for all of the main and backup servers permits us to offer fast and reliable web hosting service.