Redundant Array of Independent Disks, or RAID, is a way of storing content on multiple hard disks simultaneously. A RAID can be software or hardware based on the hard drives that are used - physical or logical ones, however what’s common between them is that they all work as one single unit where info is stored. The main advantage of employing a RAID is redundancy since the data on all drives is exactly the same all the time, so even in the event that one of the drives fails for some reason, the information will still be available on the other drives. The general performance is also better because the reading and writing processes will be split between multiple drives, so a single one will not be overloaded. There're different kinds of RAIDs where the functionality and fault tolerance may vary based on the specific setup - whether data is written on all drives in real time or it is written on a single drive and then mirrored on another, what amount of drives are used for the RAID, and many others.

RAID in Shared Web Hosting

All content which you upload to your new shared web hosting account will be stored on quick SSD drives which work in RAID-Z. This configuration is built to employ the ZFS file system which runs on our cloud hosting platform and it adds one more level of security for your site content on top of the real-time checksum authentication which ZFS uses to ensure the integrity of the data. With RAID-Z, the info is saved on several disks and at least 1 is a parity disk - whenever information is recorded on it, an additional bit is added, so in case any drive fails for some reason, the stability of the data can be verified by recalculating its bits based on what is kept on the production hard drives and on the parity one. With RAID-Z, the functioning of our system won't be interrupted and it'll continue working flawlessly until the problematic drive is replaced and the information is synced on it.

RAID in Semi-dedicated Servers

The data uploaded to any semi-dedicated server 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 defective, it will be removed from the RAID without disturbing the work of the websites since the data will load from the rest of the drives, and when a brand new drive is included, the information that will be copied on it will be a blend between the information on the parity disk and data kept on the other hard drives in the RAID. That is done so as to guarantee that the information which is being copied is correct, so the moment the new drive is rebuilt, it can be incorporated into the RAID as a production one. This is an additional warranty for the integrity of your data because the ZFS file system that runs on our cloud hosting platform analyzes a special checksum of all 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 create VPS server employ extremely fast SSD drives which will increase the speed of your Internet sites considerably. The drives function in RAID to guarantee that you won't lose any info because of a power loss or a hardware failure. The production servers work with a variety of drives where the info is stored and one disk is used for parity i.e. one bit is added to all the information copied on it, which makes it much easier to restore the website content without loss in the event a main drive fails. In case you take advantage of our backup service, the information will be saved on an individual machine that uses standard hard-disk drives and although there is no parity one in this case, they are also in a RAID to guarantee that we will have a backup copy of your site content all the time. With this kind of setup your data will always be safe because it will be available on a lot of drives.