RAID, which stands short for Redundant Array of Independent Disks, is a software or hardware storage virtualization technology that enables a system to use multiple hard drives as one single logical unit. To put it differently, all the drives are used as one and the data on all of them is the same. This type of a configuration has 2 key advantages over using just a single drive to keep data - the first one is redundancy, so if one drive breaks down, the info will be accessible from the others, and the second one is better performance as the input/output, or reading/writing operations will be distributed among multiple drives. You can find different RAID types in accordance with what amount of drives are used, whether reading and writing are both performed from all drives simultaneously, whether data is written in blocks on one drive after another or is mirrored between drives in the same time, etc. Determined by the particular setup, the error tolerance and the performance vary.

RAID in Shared Web Hosting

The state-of-the-art cloud Internet hosting platform where all shared web hosting accounts are made uses fast SSD drives rather than the standard HDDs, and they work in RAID-Z. With this configuration, a number of hard drives operate together and at least 1 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 performed for redundancy as even in case a drive fails or falls out of the RAID for some reason, the information can be rebuilt and verified thanks to the parity disk and the data saved on the other ones, thus absolutely nothing will be lost and there will be no service disturbances. This is one more level of protection for your data along with the advanced ZFS file system that uses checksums to make sure that all the data on our servers is intact and is not silently corrupted.

RAID in Semi-dedicated Servers

The SSD drives which are used for saving any website content uploaded to the semi-dedicated server accounts which we provide operate in RAID-Z. This is a special configuration where one or more hard drives are used for parity i.e. the system will include an extra bit to any data duplicated on this kind of a hard drive. In the event that a disk fails and is replaced with another one, what information will be cloned on the latter will be a mix calculated between the data on the remaining drives and that on the parity one. This is done to ensure that the info on the new drive shall be correct. Throughout the process, the RAID will continue working adequately and the faulty drive will not have an effect on the adequate operation of your websites by any means. Using SSDs in RAID-Z is an amazing addition to the ZFS file system that runs on our cutting-edge cloud platform in terms of preserving the integrity of your files because ZFS uses special digital identifiers referred to as checksums to avoid silent data corruption.

RAID in VPS Servers

All VPS server accounts that our company offers are created on physical servers which employ SSD drives working in RAID. At least one drive is employed for parity - one extra bit is added to the information cloned on it and in case a main disk stops working, this bit makes it much easier to recalculate the bits of the files on the damaged disk drive so that the right data is recovered on the new drive included in the RAID. Meanwhile, your Internet sites will still be online as all the information will still load from at least 1 more drive. In the event that you add routine backups to your VPS package, a copy of the data will be stored on standard hard disks which also operate in RAID because we want to make certain that any site content you add will be safe and sound all of the time. Employing multiple hard disks in RAID for all main and backup servers enables us to offer fast and reliable web hosting service.