Redundant Array of Independent Disks, or RAID, is a method of keeping content on a number of hard drives simultaneously. A RAID might be software or hardware based on the drives that are used - physical or logical ones, but what is common between them is the fact that they all work as a single unit where info is saved. The main advantage of using a RAID is redundancy since the info on all of the drives shall be exactly the same all the time, so even if a drive fails for some reason, the info will still be available on the other drives. The general performance is also better as the reading and writing processes can be split between multiple drives, so a single one can't be overloaded. There are different types of RAIDs where the performance and fault tolerance may vary based on the specific setup - whether your data is written on all drives in real time or it's written on one drive and after that mirrored on another, the number of drives are used for the RAID, etc.

RAID in Website Hosting

The hard drives which we employ for storage with our ground-breaking cloud Internet hosting platform are not the standard HDDs, but super fast solid-state drives (SSD). They work in RAID-Z - a special setup designed for the ZFS file system that we employ. All of the content that you add to the website hosting account will be saved on multiple disk drives and at least one will be employed as a parity disk. This is a specific drive where a further bit is included to any content copied on it. If a disk in the RAID fails, it'll be changed without service disturbances and the info will be rebuilt on the new drive by recalculating its bits thanks to the data on the parity disk along with that on the remaining disks. This is done in order to ensure the integrity of the information and together with the real-time checksum authentication that the ZFS file system executes on all drives, you will never have to worry about the loss of any info no matter what.

RAID in Semi-dedicated Hosting

In case you host your sites inside a semi-dedicated hosting account from our company, any content you upload will be kept on SSD drives which work in RAID-Z. With this type of RAID, at least one of the hard drives is employed for parity - when data is synced between the disks, an additional bit is included in it on the parity one. The purpose behind this is to guarantee the integrity of the information which is copied to a new drive if one of the drives in the RAID stops functioning since the website content being copied on the brand new disk is recalculated from the info on the standard drives and on the parity one. An additional advantage of RAID-Z is the fact that even in the event that a hard drive fails, the system can switch to a different one promptly without service disturbances of any kind. RAID-Z adds one more level of protection for the content that you upload on our cloud hosting platform together with the ZFS file system that uses unique checksums as a way to verify the integrity of every single file.


If you take advantage of one of our virtual private server packages, any content you upload will be kept on SSD drives that function in RAID. At least a single drive is employed for parity to ensure the integrity of the info. In simple terms, this is a special drive where info is copied with one bit added to it. If a disk from the RAID stops working, your sites will continue working and when a new disk takes the place of the defective one, the bits of the data that will be duplicated on it are calculated by using the healthy and the parity drives. This way, any probability of corrupting data throughout the process is avoided. We also use ordinary hard drives which work in RAID for storing backups, so should you include this service to your VPS plan, your website content will be kept on multiple drives and you won't ever need to worry about its integrity even in the event of multiple drive breakdowns.