RAID, or Redundant Array of Independent Disks, is a technology for storing data on several hard disks that function together as a single logical unit. The drives could be physical or logical i.e. in the latter case one single drive is split into different ones using virtualization software. In any case, exactly the same data is kept on all of the drives and the main benefit of employing this kind of a setup is that in case a drive fails, the data will remain available on the remaining ones. Using a RAID also improves the overall performance because the input and output operations will be spread among a couple of drives. There are several kinds of RAID dependant upon how many hard drives 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's recorded in blocks on one drive after another or it is mirrored from one on the others. These factors imply that the fault tolerance as well as the performance between the different RAID types may vary.

RAID in Shared Website Hosting

The drives that we use for storage with our top-notch cloud Internet hosting platform are not the classic HDDs, but super fast solid-state drives (SSD). They work in RAID-Z - a special setup intended for the ZFS file system which we use. All of the content that you add to your shared website hosting account will be stored on multiple disk drives and at least one will be used as a parity disk. This is a specific drive where an additional bit is included to any content copied on it. In case a disk in the RAID stops working, it will be changed without any service disturbances and the data will be rebuilt on the new drive by recalculating its bits using the data on the parity disk plus that on the other disks. This is done in order to guarantee the integrity of the data and along with the real-time checksum validation which the ZFS file system executes on all drives, you won't ever have to worry about the loss of any information no matter what.

RAID in Semi-dedicated Hosting

In case you host your websites inside a semi-dedicated hosting account from our company, all the content that you upload will be saved on SSD drives which work in RAID-Z. With this kind of RAID, at least 1 of the hard drives is used for parity - when data is synced between the disks, an additional bit is added to it on the parity one. The idea behind this is to ensure the integrity of the info that is copied to a brand new drive in case one of the hard drives in the RAID stops functioning because 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 in case a hard drive fails, the system can switch to a different one quickly without service disruptions of any type. RAID-Z adds one more level of protection for the content you upload on our cloud Internet hosting platform along with the ZFS file system which uses unique checksums as a way to authenticate the integrity of each file.

RAID in VPS

If you take advantage of one of our virtual private server solutions, any content that you upload will be kept on SSD drives that function in RAID. At least 1 drive is intended for parity to guarantee the integrity of the data. In simple terms, this is a special drive where info is copied with one bit added to it. In case a disk within the RAID fails, your websites will continue working and when a new disk takes the place of the malfunctioning one, the bits of the information that will be copied on it are calculated using the healthy and the parity drives. By doing this, any chance of corrupting data during the process is prevented. We also use regular hard drives which operate in RAID for storing backups, so if you add this service to your VPS plan, your website content will be kept on multiple drives and you'll never need to worry about its integrity even in the event of multiple drive breakdowns.