Redundant Array of Independent Disks, or RAID, is a way of keeping content on several hard disk drives simultaneously. A RAID could be software or hardware depending on the drives which are used - physical or logical ones, but what’s common between them is that they all function as just a single unit where info is kept. The key advantage of employing a RAID is redundancy as the information on all the drives will be identical at all times, so even in the event that one of the drives fails for whatever reason, the data will still be available on the rest of the drives. The overall performance is enhanced as well as the reading and writing processes can be split between different drives, so a single one will not be overloaded. There are different sorts of RAIDs where the effectiveness and fault tolerance may vary based on the particular setup - whether data is written on all drives real-time or it is written on a single drive and after that mirrored on another, the number of drives are used for the RAID, etcetera.
RAID in Website Hosting
The SSD drives that our cutting-edge cloud web hosting platform uses for storage work in RAID-Z. This type of RAID is designed to work with the ZFS file system that runs on the platform and it uses the so-called parity disk - a special drive where information saved on the other drives is duplicated with an extra bit added to it. In the event that one of the disks stops working, your sites shall continue working from the other ones and once we replace the problematic one, the data which will be cloned on it will be rebuilt from what is stored on the remaining drives as well as the info from the parity disk. This is performed so as to be able to recalculate the bits of each and every file correctly and to authenticate the integrity of the information copied on the new drive. This is another level of security for the info that you upload to your website hosting account along with the ZFS file system that compares a special digital fingerprint for each and every file on all the drives in real time.
RAID in Semi-dedicated Servers
The SSD drives that are used for keeping any site content uploaded to the semi-dedicated server accounts that we provide operate in RAID-Z. This is a specific setup where one or more disk drives are employed for parity i.e. the system will add an additional bit to any data copied on such a hard drive. If a disk fails and is replaced with a new one, what data will be copied on the latter shall 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 data on the new drive will be accurate. Throughout the procedure, the RAID will continue functioning adequately and the malfunctioning drive will not have an impact on the adequate operation of your sites in any respect. Using 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 specific digital identifiers called checksums in order to prevent silent data corruption.
RAID in VPS Servers
All VPS server accounts which we offer are generated on physical servers which employ SSD drives functioning in RAID. At least one drive is intended for parity - one additional bit is added to the information copied on it and if a main disk fails, this bit makes it easier to recalculate the bits of the files on the damaged drive so that the right information is recovered on the new drive included in the RAID. In the mean time, your Internet sites will still be online because all the data will still load from at least 1 other drive. In the event that you add routine backups to your VPS plan, a copy of your info will be stored on standard hard disks that also work in RAID because we would like to make sure that any kind of content you upload will be protected at all times. Employing multiple hard drives in RAID for all main and backup servers allows us to offer fast and reliable Internet hosting service.