Redundant Array of Independent Disks, or RAID, is a way of storing content on several hard drives simultaneously. A RAID might be software or hardware depending on the drives that are used - physical or logical ones, but what is common between them is the fact that they all operate as just a single unit where information is saved. The top advantage of using a RAID is redundancy as the data on all the drives shall be identical at all times, so even in the event that a drive fails for whatever reason, the data will still be present on the rest of the drives. The general performance is also enhanced since 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 efficiency and fault tolerance can vary depending on the particular setup - whether your data is written on all drives in real time or it's written on one drive and afterwards mirrored on another, what amount of drives are used for the RAID, etc.

RAID in Cloud Website Hosting

The hard disks which we use for storage with our outstanding cloud hosting platform are not the traditional HDDs, but quick solid-state drives (SSD). They function in RAID-Z - a special setup designed for the ZFS file system that we employ. All the content that you upload to your cloud website hosting account will be held on multiple hard drives and at least one shall be employed as a parity disk. This is a specific drive where an additional bit is included to any content copied on it. In case a disk in the RAID fails, it will be changed without service interruptions and the data will be rebuilt on the new drive by recalculating its bits thanks to the data on the parity disk plus that on the other disks. This is done so as to guarantee the integrity of the data and along with the real-time checksum verification which the ZFS file system executes on all drives, you won't ever need to concern yourself with the loss of any info no matter what.

RAID in Semi-dedicated Servers

The data uploaded to any semi-dedicated server account is kept on SSD drives that operate in RAID-Z. One of the drives in type of a setup is used for parity - each time data is cloned on it, an additional bit is added. If a disk happens to be faulty, it will be taken out of the RAID without interrupting the operation of the sites since the data will load from the rest of the drives, and when a new drive is included, the information which will be copied on it will be a mix between the data on the parity disk and data kept on the other hard drives in the RAID. This is done in order to guarantee that the information which is being copied is correct, so once the new drive is rebuilt, it could be incorporated into the RAID as a production one. This is one more guarantee for the integrity of your info since the ZFS file system that runs on our cloud hosting platform compares a unique checksum of all of the copies of the files on the different drives to avoid any possibility of silent data corruption.

RAID in VPS Servers

The physical servers where we generate VPS server employ quick SSD drives which will boost the speed of your sites considerably. The hard drives work in RAID to guarantee that you will not lose any information because of a power loss or a hardware breakdown. The production servers employ multiple drives where the info is stored and one disk is used for parity i.e. one bit is added to all of the information copied on it, that makes it much easier to recover the content without any loss in case a main drive stops working. In case you choose our backup service, your information will be stored on an independent machine which uses standard hard-disk drives and though there isn't a parity one in this case, they are also in a RAID to guarantee that we will have a backup of your site content all of the time. With this particular setup your info will always be safe because it will be available on multiple disk drives.