RAID, or Redundant Array of Independent Disks, is a technology for storing data on multiple hard disk drives that function together as a single logical unit. The drives can be physical or logical i.e. in the second case one single drive is split into separate ones using virtualization software. In either case, the very same data is kept on all drives and the main advantage of using this type of a setup is that in case a drive stops working, the data will remain available on the remaining ones. Employing a RAID also enhances the performance as the input and output operations will be spread among several drives. There are several types of RAID based on how many drives are used, whether writing is carried out on all 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 all of it is mirrored from one on the others. All of these factors imply that the error tolerance as well as the performance between the various RAID types can vary.

RAID in Cloud Hosting

All content which you upload to your new cloud hosting account will be held on quick SSD drives that function in RAID-Z. This configuration is built to use the ZFS file system that runs on our cloud web hosting platform and it adds an additional level of security for your website content on top of the real-time checksum verification which ZFS uses to ensure the integrity of the data. With RAID-Z, the info is saved on several disks and at least one of them is a parity disk - whenever data is recorded on it, an additional bit is added, so in the event that any drive stops working for whatever reason, the integrity of the information can be verified by recalculating its bits in accordance with what is stored on the production disks and on the parity one. With RAID-Z, the operation of our system won't be interrupted and it'll continue working flawlessly until the faulty drive is replaced and the data is synchronized on it.

RAID in Semi-dedicated Servers

If you host your Internet sites within a semi-dedicated server account from our firm, any content you upload will be kept on SSD drives which operate in RAID-Z. With this form of RAID, at least one of the disks is used for parity - when data is synchronized between the hard drives, an extra bit is included in it on the parity one. The idea behind this is to ensure the integrity of the information which is cloned to a new drive if one of the drives in the RAID fails since the content being copied on the new disk is recalculated from the data on the standard disk drives and on the parity one. Another advantage of RAID-Z is that even in the event that a hard drive stops functioning, the system can switch to another one promptly without service disturbances of any sort. RAID-Z adds an extra level of protection for the content you upload on our cloud web hosting platform together with the ZFS file system that uses unique checksums so as to authenticate the integrity of every single file.