Redundant Array of Independent Disks, or RAID, is a method of keeping content on multiple hard disk drives simultaneously. A RAID might be software or hardware depending on the HDDs that are used - physical or logical ones, but what’s common between them is that they all operate as just a single unit where data is stored. The top advantage of employing a RAID is redundancy as the info on all drives shall be the same at all times, so even in the event that one of the drives fails for whatever reason, the information will still be present on the remaining drives. The overall performance is also enhanced since the reading and writing processes can be split between different drives, so a single one can't be overloaded. There're different kinds of RAIDs where the performance and fault tolerance may vary depending on the particular setup - whether information is written on all drives in real time or it is written on one drive and then mirrored on another, what amount of drives are used for the RAID, etcetera.

RAID in Shared Website Hosting

The disk drives that we use for storage with our top-notch cloud hosting platform are not the standard HDDs, but quick solid-state drives (SSD). They operate in RAID-Z - a special setup developed for the ZFS file system which we employ. Any content that you upload to the shared website hosting account will be saved on multiple drives and at least 1 shall be employed as a parity disk. This is a specific drive where a further bit is added to any content copied on it. In case a disk in the RAID stops functioning, it'll be changed without service interruptions and the data will be recovered on the new drive by recalculating its bits using the data on the parity disk plus that on the remaining disks. This is done so as to guarantee the integrity of the data and together with the real-time checksum authentication that the ZFS file system performs on all drives, you won't ever have to be concerned about the loss of any info no matter what.

RAID in Semi-dedicated Hosting

The info uploaded to any semi-dedicated hosting account is kept on SSD drives which work in RAID-Z. One of the drives in type of a setup is used for parity - any time data is copied on it, an additional bit is added. In case a disk happens to be flawed, it will be taken out of the RAID without interrupting the functioning of the sites since the data will load from the remaining drives, and when a brand new drive is included, the info that will be cloned on it will be a combination between the information on the parity disk and data kept on the other hard disks in the RAID. That is done in order to ensure that the information which is being duplicated is correct, so once the new drive is rebuilt, it could be integrated into the RAID as a production one. This is one more guarantee for the integrity of your info as the ZFS file system that runs on our cloud Internet hosting platform compares a special checksum of all the copies of the files on the various drives to avoid any probability of silent data corruption.

RAID in VPS Hosting

In case you take advantage of one of our virtual private server solutions, any content you upload will be saved on SSD drives that operate in RAID. At least 1 drive is intended for parity to ensure the integrity of your info. In simple terms, this is a special drive where info is copied with one bit added to it. In the event that a disk in the RAID fails, your Internet sites will continue working and when a new disk substitutes the flawed one, the bits of the information that will be duplicated on it are calculated using the healthy and the parity drives. This way, any probability of corrupting data throughout the process is avoided. We also employ standard hard disk drives which function in RAID for storing backups, so should you add this service to your VPS plan, your site content will be stored on multiple drives and you'll never need to worry about its integrity even in the event of multiple drive breakdowns.