Redundant Array of Independent Disks, or RAID, is a method of saving content on several hard drives simultaneously. A RAID can be software or hardware depending on the drives which are used - physical or logical ones, still what’s common between them is the fact that they all work as one single unit where information is stored. The top advantage of using a RAID is redundancy because the info on all the drives will 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 other drives. The overall performance is also enhanced as the reading and writing processes can be split between various drives, so a single one will not be overloaded. There're different kinds of RAIDs where the efficiency and fault tolerance could differ based on the specific setup - whether information is written on all of the drives in real time or it is written on one drive and after that mirrored on another, the number of drives are used for the RAID, etc.

RAID in Shared Website Hosting

The NVMe drives which our cutting-edge cloud web hosting platform employs for storage function in RAID-Z. This type of RAID is intended to work with the ZFS file system which runs on the platform and it uses the so-called parity disk - a specific drive where data kept on the other drives is cloned with an extra bit added to it. In case one of the disks fails, your sites will continue working from the other ones and as soon as we replace the bad one, the data that will be cloned on it will be recovered from what is stored on the remaining drives together with the data from the parity disk. This is done so as to be able to recalculate the elements of every single file properly and to confirm the integrity of the data duplicated on the new drive. This is one more level of security for the information that you upload to your shared website hosting account together with the ZFS file system that analyzes a unique digital fingerprint for each and every file on all of the hard drives in real time.