RAID, or Redundant Array of Independent Disks, is a technology for saving data on a number hard disk drives that operate together as one logical unit. The drives could be physical or logical i.e. in the latter case one drive is split into individual ones through virtualization software. In either case, exactly the same data is stored on all of the drives and the main advantage of employing this type of a setup is that if a drive breaks down, the data shall still be available on the other ones. Using a RAID also enhances the overall performance because the input and output operations will be spread among a few drives. There are several kinds of RAID depending on how many hard disks are used, whether writing is performed on all of the 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 it is mirrored from one on the others. These factors show that the error tolerance as well as the performance between the different RAID types may vary.

RAID in Shared Web Hosting

The SSD drives that our cutting-edge cloud web hosting platform employs for storage function in RAID-Z. This kind of RAID is designed to work with the ZFS file system that runs on the platform and it works by using the so-called parity disk - a special drive where information kept on the other drives is copied with an additional bit added to it. In case one of the disks stops working, your websites will continue working from the other ones and once we replace the problematic one, the information that will be duplicated on it will be rebuilt from what is stored on the rest of the drives as well as the info from the parity disk. This is performed in order to be able to recalculate the bits of every file adequately and to verify the integrity of the info copied on the new drive. This is one more level of security for the info you upload to your shared web hosting account along with the ZFS file system that compares a special digital fingerprint for each file on all of the hard drives in real time.

RAID in Semi-dedicated Hosting

The RAID type which we use for the cloud web hosting platform where your semi-dedicated hosting account will be created is called RAID-Z. What's different about it is that at least one of the disks is used as a parity drive. In simple terms, whenever any data is duplicated on this special disk drive, one more bit is included to it and if a malfunctioning disk is replaced, the data that will be cloned on it is a combination of the data on the other drives in the RAID and that on the parity one. This is done to make sure that your info is intact. Throughout this process, your sites will be working normally because RAID-Z allows for an entire drive to fail without causing any service disruptions and it simply works by using one of the remaining ones as the main production drive. Using RAID-Z together with the ZFS file system that uses checksums to warrant that no data shall get silently corrupted on our servers, you will never need to worry about the integrity of your files.

RAID in VPS Hosting

In case you employ one of our virtual private server solutions, any content you upload will be kept on SSD drives that work in RAID. At least one drive is intended for parity so as to ensure the integrity of your info. In simple terms, this is a special drive where information is copied with one bit added to it. If a disk part of the RAID fails, your Internet sites will continue working and when a new disk takes the place of the faulty one, the bits of the information that will be cloned on it are calculated using the healthy and the parity drives. This way, any chance of corrupting data throughout the process is prevented. We also employ conventional hard disks that work in RAID for storing backup copies, so should you add this service to your VPS package, your content will be saved on multiple drives and you will never have to worry about its integrity even in the event of multiple drive breakdowns.