RAID, or Redundant Array of Independent Disks, is a technology of storing data on multiple hard disks that operate together as one logical unit. The drives can be physical or logical i.e. in the latter case one single drive is divided into independent ones via virtualization software. In either case, identical info is stored on all the drives and the key advantage of using this kind of a setup is that in case a drive fails, the data will still be available on the other ones. Having a RAID also improves the overall performance since the input and output operations will be spread among several drives. There are several types 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 a single one, and how the information is synchronized between the hard drives - whether it's written in blocks on one drive after another or it is mirrored from one on the others. These factors imply that the error tolerance and the performance between the different RAID types can differ.

RAID in Cloud Hosting

All content which you upload to your new cloud hosting account will be held on fast SSD drives which function in RAID-Z. This setup is built to work with the ZFS file system that runs on our cloud Internet hosting platform and it adds one more level of security for your content on top of the real-time checksum validation which ZFS uses to ensure the integrity of the data. With RAID-Z, the information is stored on a number of disks and at least 1 is a parity disk - whenever info is recorded on it, an extra bit is added, so in case any drive stops working for some reason, the integrity of the data can be verified by recalculating its bits in accordance with what is saved on the production drives and on the parity one. With RAID-Z, the functioning of our system won't be interrupted and it will continue working effectively until the problematic drive is replaced and the information is synchronized on it.

RAID in Semi-dedicated Servers

The SSD drives that are used for saving any website content uploaded to the semi-dedicated server accounts that we provide work in RAID-Z. This is a specific setup where one or more drives are employed for parity i.e. the system will add an extra bit to any data duplicated on such a drive. In case that a disk fails and is replaced with another one, what data will be cloned on the latter shall be a mix calculated between the data on the remaining hard disks and that on the parity one. This is done to ensure that the data on the new drive will be accurate. During the procedure, the RAID will continue functioning adequately and the malfunctioning drive won't impact the adequate operation of your sites at all. Working with SSDs in RAID-Z is an amazing addition to the ZFS file system which runs on our advanced cloud platform with respect to preserving the integrity of your files since ZFS uses special digital identifiers named checksums in order to prevent silent data corruption.

RAID in VPS Servers

The physical servers where we create VPS server employ quick SSD drives which will boost the speed of your Internet sites significantly. The disk drives operate in RAID to guarantee that you will not lose any info because of a power loss or a hardware malfunction. The production servers use a variety of drives where the information is stored and one disk is used for parity i.e. one bit is added to all info copied on it, that makes it much easier to recover the website content without loss if a main drive stops working. If you pick our backup service, your information will be stored on a separate machine that uses standard hard-disk drives and though there is no parity one in this case, they are also in a RAID to guarantee that we will have a backup copy of your site content at all times. With this particular configuration your data will always be safe because it will be available on several disk drives.