RAID, or Redundant Array of Independent Disks, is a technology of storing data on several hard disk drives that function together as one single logical unit. The drives can be physical or logical i.e. in the latter case one drive is split into individual ones using virtualization software. Either way, exactly the same data is kept on all of 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 remain available on the remaining ones. Using a RAID also boosts the performance because the input and output operations will be spread among a number of drives. There are several types of RAID based on how many drives are used, whether writing is carried out on all drives in real time or just on a single one, and how the info is synchronized between the drives - whether it's recorded in blocks on one drive after another or all of it is mirrored from one on the others. All of these factors show that the fault tolerance and the performance between the various RAID types could differ.

RAID in Shared Hosting

Any content that you upload to your new shared hosting account will be stored on quick SSD drives which work in RAID-Z. This configuration is built to use the ZFS file system which runs on our cloud Internet hosting platform and it adds another level of security for your content in addition to the real-time checksum authentication which ZFS uses to guarantee the integrity of the data. With RAID-Z, the information is stored on a number of disks and at least one is a parity disk - whenever info is recorded on it, an extra bit is added, so in the event that any drive stops functioning for some reason, the stability of the information can be verified by recalculating its bits in accordance with what is stored on the production hard disks and on the parity one. With RAID-Z, the operation of our system won't be interrupted and it will continue operating efficiently until the malfunctioning drive is replaced and the info is synced on it.

RAID in Semi-dedicated Hosting

In case you host your websites in a semi-dedicated hosting account from our company, any content you upload will be saved on SSD drives which work in RAID-Z. With this form of RAID, at least one of the hard disks is employed for parity - when data is synced between the disks, an extra bit is added to it on the parity one. The purpose behind this is to ensure the integrity of the info that is copied to a new drive in case one of the hard drives in the RAID stops working as the content being copied on the brand new disk is recalculated from the information on the standard hard drives and on the parity one. An additional advantage of RAID-Z is the fact that even if a disk drive stops functioning, the system can easily switch to another one promptly without service disturbances of any type. RAID-Z adds an extra level of safety for the content that you upload on our cloud web hosting platform together with the ZFS file system that uses unique checksums to verify the integrity of every single file.

RAID in VPS

The SSD drives that we use on the machines where we set up virtual private servers work in RAID to ensure that any content you upload will be available and intact at all times. At least 1 drive is employed for parity - one bit of info is added to any data cloned on it. In case a main drive fails, it is replaced and the data that will be cloned on it is calculated between the other drives and the parity one. That’s done to make sure that the required information is copied and that no file is corrupted because the new drive will be used in the RAID afterwards. In addition, we use hard disks working in RAID on the backup servers, so in the event that you add this upgrade to your VPS plan, you'll use an even more reliable web hosting service because your content will be available on multiple drives regardless of any unexpected hardware failure.