Redundant Array of Independent Disks, or RAID, is a way of keeping content on multiple hard drives concurrently. A RAID can be software or hardware based on the hard drives that are used - physical or logical ones, still what is common between them is the fact that they all function as a single unit where your information is stored. The main advantage of using a RAID is redundancy because the data on all the drives is identical all the time, so even if one of the drives fails for whatever reason, the data will still be available on the rest of the drives. The general performance will also improve as the reading and writing processes can be split between multiple drives, so a single one will not be overloaded. There are different types of RAIDs where the performance and fault tolerance may vary based on the particular setup - whether your data is written on all of the drives real-time or it is written on a single drive and afterwards mirrored on another, what number of drives are used for the RAID, and many others.

RAID in Cloud Web Hosting

The SSD drives that our cutting-edge cloud hosting platform employs for storage work in RAID-Z. This type of RAID is designed to work with the ZFS file system that runs on the platform and it takes advantage of the so-called parity disk - a specific drive where data located on the other drives is duplicated with an additional bit added to it. In the event that one of the disks stops working, your sites will continue working from the other ones and as soon as we replace the problematic one, the data which will be copied on it will be rebuilt from what is stored on the rest of the drives along with the info from the parity disk. This is done so as to be able to recalculate the bits of every single file adequately and to authenticate the integrity of the data copied on the new drive. This is one more level of security for the content that you upload to your cloud web hosting account together with the ZFS file system that analyzes a special digital fingerprint for each and every file on all of the drives in real time.