RAID, or Redundant Array of Independent Disks, is a technology for keeping data on several hard disks which function together as one logical unit. The drives could be physical or logical i.e. in the aforementioned case one drive is divided into separate ones using virtualization software. In any case, identical information is kept on all the drives and the main advantage of employing this kind of a setup is that in the event that a drive breaks down, the data will still be available on the other ones. Having a RAID also enhances the performance because the input and output operations will be spread among a number of drives. There are several kinds of RAID depending on how many drives are used, whether writing is done on all the drives in real time or just on a single one, and how the data is synchronized between the drives - whether it's written in blocks on one drive after another or all of it is mirrored from one on the others. These factors mean that the error tolerance and the performance between the various RAID types can differ.

RAID in Cloud Web Hosting

The cutting-edge cloud hosting platform where all cloud web hosting accounts are created uses quick SSD drives as opposed to the traditional HDDs, and they function in RAID-Z. With this configuration, numerous hard disk drives function together and at least one is a dedicated parity disk. Put simply, when data is written on the rest of the drives, it's cloned on the parity one adding an extra bit. This is carried out for redundancy as even in case a drive fails or falls out of the RAID for whatever reason, the data can be rebuilt and verified using the parity disk and the data saved on the other ones, so not a single thing will be lost and there will be no service disorders. This is one more level of protection for your data in addition to the revolutionary ZFS file system which uses checksums to make sure that all of the data on our servers is undamaged and is not silently corrupted.

RAID in Semi-dedicated Hosting

The data uploaded to any semi-dedicated hosting account is stored on SSD drives which function in RAID-Z. One of the drives in this kind of a configuration is used for parity - every time data is cloned on it, an extra bit is added. In case a disk happens to be flawed, it will be removed from the RAID without interrupting the functioning of the websites as the data will load from the rest of the drives, and when a brand new drive is included, the info which will be duplicated on it will be a blend between the data on the parity disk and data stored on the other hard drives in the RAID. That is done to ensure that the information that is being cloned is accurate, so the moment the new drive is rebuilt, it could be incorporated into the RAID as a production one. This is an additional guarantee for the integrity of your information because the ZFS file system that runs on our cloud web hosting platform analyzes a special checksum of all of the copies of the files on the separate drives in order to avoid any possibility of silent data corruption.

RAID in VPS Hosting

The physical servers where we create virtual private server employ high-speed SSD drives that will raise the speed of your websites substantially. The hard disks work in RAID to ensure that you won't lose any data because of a power loss or a hardware failure. The production servers take advantage of a variety of drives where the info is stored and one disk is used for parity i.e. one bit is added to all info copied on it, that makes it easier to restore the site content without any loss in the event a main drive stops working. If you choose our backup service, the info will be saved on an independent machine that uses standard hard-disk drives and although there is no parity one in this case, they are also in a RAID to ensure that we will have a backup copy of your website content all of the time. With this kind of configuration your info will always be safe as it will be available on several disk drives.