RAID, which is short for Redundant Array of Independent Disks, is a software or hardware storage virtualization technology that allows a system to use many hard drives as one single logical unit. Put simply, all the drives are used as one and the data on all of them is the same. Such a setup has 2 huge advantages over using just a single drive to save data - the first is redundancy, so in the event that one drive fails, the data will be accessible from the others, and the second is better performance as the input/output, or reading/writing operations will be distributed among a number of drives. There're different RAID types depending on the number of drives are employed, if reading and writing are both done from all the drives simultaneously, if data is written in blocks on one drive after another or is mirrored between drives in the same time, and so on. Based on the exact setup, the fault tolerance and the performance vary.

RAID in Cloud Hosting

The SSD drives which our cutting-edge cloud hosting platform uses for storage operate in RAID-Z. This sort of RAID is developed 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 stored on the other drives is duplicated with an extra bit added to it. If one of the disks stops functioning, your sites will continue working from the other ones and after we replace the malfunctioning one, the data which will be copied on it will be recovered from what is stored on the rest of the drives together with the info from the parity disk. This is done in order to be able to recalculate the elements of every single file correctly and to validate the integrity of the information copied on the new drive. This is one more level of security for the content that you upload to your cloud hosting account in addition to the ZFS file system that analyzes a special digital fingerprint for every single file on all of the drives in real time.

RAID in Semi-dedicated Hosting

In case you host your websites inside a semi-dedicated hosting account from our company, all the content that you upload will be kept on SSD drives that work in RAID-Z. With this type of RAID, at least 1 of the drives is employed for parity - when data is synced between the disks, an extra bit is added to it on the parity one. The reasoning behind this is to ensure the integrity of the info which is cloned to a new drive in the event that one of the drives in the RAID stops working as the website content being copied on the brand new disk is recalculated from the info on the standard drives and on the parity one. Another advantage of RAID-Z is that even in the event that a disk drive stops functioning, the system can switch to a different one quickly without service interruptions of any kind. RAID-Z adds one more level of protection for the content which you upload on our cloud web hosting platform along with the ZFS file system which uses unique checksums to authenticate the integrity of each file.

RAID in VPS Web Hosting

All virtual private server accounts which our company provides are made on physical servers which take advantage of SSD drives working in RAID. At least 1 drive is used for parity - one extra bit is added to the information copied on it and if a main disk breaks down, this bit makes it easier to recalculate the bits of the files on the damaged hard disk so that the right data is recovered on the new drive added to the RAID. In the mean time, your sites will remain online because all the information will still load from at least 1 more hard disk. In the event that you add regular backups to your VPS package, a copy of the data will be saved on standard disk drives which also work in RAID since we want to make certain that any type of site content you upload will be protected all of the time. Employing multiple hard drives in RAID for all the main and backup servers enables us to offer fast and reliable Internet hosting service.