RAID, or Redundant Array of Independent Disks, is a technology of saving data on several hard drives which work together as one logical unit. The drives can be physical or logical i.e. in the latter case a single drive is split into different ones through virtualization software. In either case, identical info is stored on all drives and the key advantage of employing such a setup is that in case a drive stops working, the data will remain available on the other ones. Having a RAID also enhances the performance as the input and output operations will be spread among several drives. There are several kinds of RAID dependant upon how many hard disks are used, whether writing is performed on all of the drives in real time or just on one, and how the info is synced between the hard drives - whether it is written in blocks on one drive after another or it is mirrored from one on the others. All of these factors suggest that the fault tolerance and the performance between the different RAID types can vary.

RAID in Shared Web Hosting

The SSD drives that our cutting-edge cloud Internet hosting platform uses for storage work in RAID-Z. This kind of RAID is intended to work with the ZFS file system which runs on the platform and it employs the so-called parity disk - a specific drive where data located on the other drives is duplicated with an additional bit added to it. If one of the disks fails, your Internet sites shall continue working from the other ones and after we replace the problematic one, the data that will be cloned on it will be recovered from what is stored on the remaining drives together with the information from the parity disk. This is done so as to be able to recalculate the bits of every single file adequately and to validate the integrity of the info duplicated on the new drive. This is another level of security for the information that you upload to your shared web hosting account together with the ZFS file system that analyzes a unique digital fingerprint for every single file on all disk drives in real time.

RAID in Semi-dedicated Hosting

The SSD drives that are used for keeping any site content uploaded to the semi-dedicated hosting accounts which we offer function in RAID-Z. This is a specific setup where one or more hard drives are used for parity i.e. the system will include an additional bit to any data cloned on such a hard drive. If a disk fails and is substituted with another one, what info 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 information on the new drive shall be accurate. Throughout the process, the RAID will continue working normally and the malfunctioning drive won't have an effect on the adequate operation of your Internet sites in any way. Working with SSDs in RAID-Z is a superb addition to the ZFS file system that runs on our cutting-edge cloud platform with regards to preserving the integrity of your files because ZFS uses special digital identifiers named checksums so as to prevent silent data corruption.

RAID in VPS Hosting

All virtual private server accounts which we offer are made on physical servers that use SSD drives functioning in RAID. At least one drive is employed for parity - one extra bit is added to the data copied on it and if a main disk breaks down, this bit makes it much simpler to recalculate the bits of the files on the damaged hard disk so that the accurate info is recovered on the new drive added to the RAID. At the same time, your websites will remain online since all the info will still load from at least 1 more hard disk. In the event that you add routine backups to your VPS package, a copy of the information will be kept on standard disk drives that also operate in RAID as we would like to make sure that any sort of site content you add will be risk-free all of the time. Employing multiple hard drives in RAID for all the main and backup servers permits us to offer fast and reliable web hosting service.