Redundant Array of Independent Disks, or RAID, is a way of saving content on multiple hard drives concurrently. A RAID might be software or hardware depending on the drives that are used - physical or logical ones, yet what’s common between them is the fact that they all function as just a single unit where info is saved. The key advantage of using a RAID is redundancy since the data on all the drives shall be the same at all times, so even if one of the drives fails for some reason, the information will still be available on the remaining drives. The general performance is also enhanced since the reading and writing processes could be split between various drives, so a single one won't be overloaded. There are different sorts of RAIDs where the capabilities and fault tolerance may vary according to the specific setup - whether information is written on all the drives in real time or it's written on a single drive and after that mirrored on another, what amount of drives are used for the RAID, etcetera.

RAID in Shared Web Hosting

The hard disks that we use for storage with our innovative cloud Internet hosting platform are not the traditional HDDs, but high-speed solid-state drives (SSD). They function in RAID-Z - a special setup intended for the ZFS file system that we use. All of the content that you upload to the shared web hosting account will be kept on multiple drives and at least one of them will be employed as a parity disk. This is a special drive where a further bit is added to any content copied on it. In the event that a disk in the RAID fails, it'll be changed with no service interruptions and the data will be recovered on the new drive by recalculating its bits thanks to the data on the parity disk plus that on the other disks. This is done so as to guarantee the integrity of the information and along with the real-time checksum verification which the ZFS file system runs on all drives, you won't ever need to concern yourself with losing any info no matter what.

RAID in Semi-dedicated Servers

The RAID type which we use for the cloud hosting platform where your semi-dedicated server account shall be created is called RAID-Z. What is different about it is that at least one of the disks is used as a parity drive. In simple terms, whenever any data is copied on this specific disk drive, one more bit is included to it and in the event that a problematic disk is changed, the information which will be cloned on it is a mix of the data on the other drives in the RAID and that on the parity one. We do this to ensure that the info is intact. During this process, your sites will be up and running normally as RAID-Z enables a whole drive to fail without service disturbances and it simply works by using one of the remaining ones as the main production drive. Employing RAID-Z together with the ZFS file system that uses checksums to guarantee that no data can get silently corrupted on our servers, you won't have to worry about the integrity of your files.

RAID in VPS Servers

If you employ one of our VPS server packages, any content which you upload will be stored on SSD drives that operate in RAID. At least a single drive is used for parity to ensure the integrity of your data. In simple terms, this is a special drive where info is copied with one bit added to it. If a disk inside the RAID breaks down, your sites will continue working and when a new disk replaces the faulty 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 during the process is prevented. We also employ standard hard disks which operate in RAID for storing backup copies, so if you include this service to your VPS plan, your website content will be stored on multiple drives and you won't ever have to worry about its integrity even in the event of multiple drive breakdowns.