Redundant Array of Independent Disks, or RAID, is a way of saving content on a number of hard disk drives simultaneously. A RAID can be software or hardware depending on the hard drives which are used - physical or logical ones, however what’s common between them is that they all function as one single unit where your information is saved. The key advantage of using a RAID is redundancy because the data on all of the drives will be identical at all times, so even in the event that a drive fails for some reason, the information will still be present on the other drives. The general performance will also improve since the reading and writing processes could be split between a number of drives, so a single one won't be overloaded. There are different sorts of RAIDs where the capabilities and fault tolerance can vary based on the particular setup - whether info is written on all drives real-time or it's written on one drive and then mirrored on another, what amount of drives are used for the RAID, etcetera.

RAID in Cloud Website Hosting

The hard drives which we employ for storage with our revolutionary cloud web hosting platform are not the standard HDDs, but high-speed NVMes. They work in RAID-Z - a special setup intended for the ZFS file system which we work with. All of the content that you upload to your cloud website hosting account will be stored on multiple hard disks and at least one of them will be employed as a parity disk. This is a special drive where a further bit is included to any content copied on it. In the event that a disk in the RAID fails, it'll be changed without any service interruptions and the information will be recovered on the new drive by recalculating its bits thanks to the data on the parity disk along with that on the remaining disks. This is done so as to ensure the integrity of the data and together with the real-time checksum verification which the ZFS file system executes on all drives, you'll never need to be concerned about losing any info no matter what.