RAID, or Redundant Array of Independent Disks, is a technology for keeping data on a number hard drives that function together as one single logical unit. The drives could be physical or logical i.e. in the latter case one single drive is split into independent ones using virtualization software. In either case, the same info is stored on all the drives and the basic benefit of employing this type of a setup is that in case a drive stops working, the data will still be available on the remaining ones. Using a RAID also enhances the performance because the input and output operations will be spread among several drives. There are several kinds of RAID dependant upon how many hard 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 synced between the hard drives - whether it is written in blocks on one drive after another or all of it is mirrored from one on the others. These factors indicate that the fault tolerance and the performance between the different RAID types may differ.

RAID in Hosting

The advanced cloud hosting platform where all hosting accounts are made employs super fast SSD drives instead of the traditional HDDs, and they work in RAID-Z. With this setup, numerous hard disk drives operate together and at least 1 is a dedicated parity disk. Basically, when data is written on the other drives, it is duplicated 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 data can be rebuilt and verified thanks to the parity disk and the data recorded on the other ones, which means that nothing will be lost and there will not be any service disturbances. This is another level of security for your info in addition to the advanced ZFS file system that uses checksums to make sure that all the data on our servers is undamaged and is not silently corrupted.

RAID in Semi-dedicated Servers

The SSD drives which are used for keeping any site content uploaded to the semi-dedicated server accounts that we provide function in RAID-Z. This is a specific setup where one or more drives are used for parity i.e. the system will add an additional bit to any data cloned on such a hard drive. In case that a disk fails and is replaced with another one, what information will be copied on the latter will be a mix calculated between the data on the remaining disks and that on the parity one. This is done to guarantee that the info on the new drive will be accurate. During the process, the RAID will continue working adequately and the faulty drive will not have an effect on the proper operation of your Internet sites in any respect. Using SSDs in RAID-Z is an outstanding addition to the ZFS file system which runs on our top-notch cloud platform with regards to preserving the integrity of your files as ZFS uses specific digital identifiers named checksums to prevent silent data corruption.

RAID in VPS Servers

If you employ one of our VPS server packages, any content that you upload will be kept on SSD drives which work in RAID. At least 1 drive is used for parity so as to guarantee the integrity of your information. In simple terms, this is a special drive where information is copied with one bit added to it. In the event that a disk in the RAID stops functioning, your sites will continue working and when a new disk replaces the defective one, the bits of the information that will be cloned on it are calculated by using the healthy and the parity drives. By doing this, any probability of corrupting data throughout the process is prevented. We also use regular hard disk drives that function in RAID for storing backups, so if you add this service to your VPS plan, your website content will be stored on multiple drives and you will never have to worry about its integrity even in the event of multiple drive breakdowns.