RAID, or Redundant Array of Independent Disks, is a technology of storing data on a number hard disks which operate together as one single logical unit. The drives can be physical or logical i.e. in the latter case one drive is divided into independent ones using virtualization software. In either case, identical information is stored on all of the drives and the key benefit of using this kind of a setup is that in case a drive stops working, the data shall still be available on the other ones. Using a RAID also enhances the overall performance because the input and output operations will be spread among several drives. There are several types of RAID depending on how many hard disks are used, whether writing is carried out on all the drives in real time or just on a single one, and how the data is synced between the drives - whether it is written in blocks on one drive after another or it is mirrored from one on the others. All these factors indicate that the error tolerance as well as the performance between the various RAID types may differ.

RAID in Cloud Hosting

The SSD drives that our cutting-edge cloud web hosting platform employs 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 takes advantage of the so-called parity disk - a specific drive where data saved on the other drives is copied with an additional bit added to it. In case one of the disks stops working, your sites will continue working from the other ones and as soon as we replace the malfunctioning one, the data which will be cloned on it will be rebuilt from what is stored on the rest of the drives together with the info from the parity disk. This is done so as to be able to recalculate the elements of each file correctly and to authenticate the integrity of the data copied on the new drive. This is another level of security for the info you upload to your cloud hosting account along with the ZFS file system which compares a unique digital fingerprint for every single file on all of the hard drives in real time.

RAID in Semi-dedicated Hosting

In case you host your websites inside a semi-dedicated hosting account from our firm, all the content you upload will be kept on SSD drives that work in RAID-Z. With this type of RAID, at least one of the drives is employed for parity - when data is synchronized between the disks, an additional bit is included in it on the parity one. The idea behind this is to guarantee the integrity of the information which is duplicated to a new drive if one of the hard drives in the RAID stops working because the website content being copied on the brand new disk is recalculated from the info on the standard drives and on the parity one. An additional advantage of RAID-Z is that even in the event that a hard drive stops working, the system could switch to another one quickly without service disruptions of any sort. RAID-Z adds an additional level of safety for the content you upload on our cloud hosting platform along with the ZFS file system that uses unique checksums as a way to validate the integrity of each file.

RAID in VPS Hosting

In case you employ one of our virtual private server packages, any content which you upload will be stored on SSD drives that operate in RAID. At least 1 drive is used for parity so as to guarantee the integrity of the data. In simple terms, this is a special drive where data is copied with one bit added to it. In the event that a disk inside the RAID breaks down, your sites will continue working and when a new disk takes the place of the flawed one, the bits of the information that will be duplicated on it are calculated using the healthy and the parity drives. By doing this, any possibility of corrupting data during the process is averted. We also use conventional hard disks which work in RAID for storing backup copies, so if you include this service to your VPS plan, your content will be stored on multiple drives and you won't ever need to worry about its integrity even in the event of multiple drive breakdowns.