Redundant Array of Independent Disks, or RAID, is a way of saving content on a number of hard disk drives simultaneously. A RAID might be software or hardware depending on the HDDs that are used - physical or logical ones, yet what is common between them is the fact that they all operate as one single unit where data is kept. The top advantage of employing a RAID is redundancy because the info on all the drives will be exactly the same all the time, so even in the event that some drive fails for some reason, the information will still be present on the other drives. The general performance is also enhanced as the reading and writing processes could be split between various drives, so a single one can't be overloaded. There are different kinds of RAIDs where the performance and fault tolerance may differ according to the specific setup - whether your data is written on all drives in real time or it is written on one drive and afterwards mirrored on another, what number of drives are used for the RAID, and so on.

RAID in Cloud Website Hosting

The SSD drives which our cutting-edge cloud Internet hosting platform employs for storage function in RAID-Z. This kind of RAID is developed to work with the ZFS file system which runs on the platform and it takes advantage of the so-called parity disk - a special drive where info stored on the other drives is copied with an extra bit added to it. If one of the disks stops functioning, your sites will continue working from the other ones and once we replace the bad one, the data which will be copied on it will be recovered from what is stored on the remaining drives along with the data from the parity disk. This is performed in order to be able to recalculate the bits of every single file properly and to authenticate the integrity of the data copied on the new drive. This is one more level of security for the content you upload to your cloud website hosting account together with the ZFS file system which compares a special digital fingerprint for each file on all the drives in real time.