RAID, or Redundant Array of Independent Disks, is a technology for storing data on multiple hard disks which work together as one single logical unit. The drives could be physical or logical i.e. in the second case one single drive is divided into independent ones using virtualization software. In either case, the same information is stored on all the drives and the basic advantage of using such a setup is that in case a drive breaks down, the data shall still be available on the remaining ones. Employing a RAID also improves the overall performance as the input and output operations will be spread among a number of drives. There are several types of RAID depending on how many hard drives are used, whether writing is done on all the drives in real time or just on a single one, and how the information is synced between the drives - whether it is written in blocks on one drive after another or all of it is mirrored from one on the others. All these factors show that the error tolerance as well as the performance between the different RAID types may differ.

RAID in Cloud Hosting

The SSD drives which our cutting-edge cloud web hosting platform uses for storage function in RAID-Z. This kind of RAID is intended to work with the ZFS file system that runs on the platform and it uses the so-called parity disk - a specific drive where data saved on the other drives is cloned with an extra bit added to it. If one of the disks stops functioning, your Internet sites shall continue working from the other ones and once we replace the bad one, the information which will be duplicated on it will be rebuilt from what is stored on the remaining drives together with the info from the parity disk. This is done in order to be able to recalculate the elements of every file adequately and to validate the integrity of the info duplicated on the new drive. This is one more level of security for the content that you upload to your cloud hosting account together with the ZFS file system which compares a unique digital fingerprint for each and every file on all the drives in real time.

RAID in Semi-dedicated Hosting

The SSD drives that are used for storing any site content uploaded to the semi-dedicated hosting accounts that we provide function in RAID-Z. This is a special setup where one or more drives are used for parity i.e. the system will include an additional bit to any data cloned on this kind of a disk drive. In case that a disk fails and is replaced with another one, what info will be duplicated on the latter shall be a mix calculated between the data on the remaining hard disks and that on the parity one. This is done to ensure that the information on the new drive shall be correct. During the procedure, the RAID will continue working adequately and the faulty drive will not affect the proper operation of your Internet sites in any respect. Working with SSDs in RAID-Z is a great addition to the ZFS file system that runs on our top-notch cloud platform with regards to preserving the integrity of your files since ZFS uses special digital identifiers identified as checksums so as to avoid silent data corruption.

RAID in VPS Web Hosting

All virtual private server accounts that our company provides are created on physical servers which take advantage of SSD drives operating in RAID. At least one drive is used for parity - one additional bit is added to the info copied on it and in case a main disk breaks down, this bit makes it much easier to recalculate the bits of the files on the failed drive so that the accurate information is recovered on the new drive included in the RAID. Meanwhile, your Internet sites will remain online because all the information will still load from at least one more disk drive. In the event that you add routine backups to your VPS package, a copy of the info will be saved on standard hard disks which also function in RAID as we want to make certain that any type of content you upload will be safe and sound all of the time. Using multiple hard drives in RAID for all the main and backup servers enables us to offer fast and reliable Internet hosting service.