RAID, which is an acronym of Redundant Array of Independent Disks, is a software or hardware storage virtualization technology that permits a system to use several hard drives as one single logical unit. Put simply, all the drives are used as one and the info on all of them is identical. This kind of a setup has two major advantages over using a single drive to save data - the first is redundancy, so in case one drive stops working, the information will be accessible through the remaining ones, and the second one is better performance because the input/output, or reading/writing operations will be spread among several drives. There're different RAID types in accordance with the number of drives are employed, if reading and writing are both handled from all the drives simultaneously, if data is written in blocks on one drive after another or is mirrored between drives in the same time, and so on. According to the particular setup, the fault tolerance and the performance could differ.

RAID in Shared Hosting

The SSD drives which our cutting-edge cloud web hosting platform uses for storage work in RAID-Z. This type of RAID is created to work with the ZFS file system which runs on the platform and it uses the so-called parity disk - a special drive where data located on the other drives is copied with an additional bit added to it. If one of the disks stops functioning, your Internet sites shall continue working from the other ones and after we replace the faulty one, the data that will be duplicated on it will be rebuilt from what is stored on the other drives together with the info from the parity disk. This is performed in order to be able to recalculate the elements of each file correctly and to authenticate the integrity of the information cloned on the new drive. This is an additional level of security for the information that you upload to your shared hosting account along with the ZFS file system that analyzes a special digital fingerprint for every single file on all disk drives in real time.

RAID in Semi-dedicated Hosting

In case you host your websites inside a semi-dedicated hosting account from our firm, all of the content you upload will be stored on SSD drives which operate in RAID-Z. With this type of RAID, at least 1 of the drives is used for parity - when data is synchronized between the disks, an additional bit is included in it on the parity one. The reasoning behind this is to ensure the integrity of the info that is cloned to a new drive if one of the drives in the RAID stops functioning since the website content being copied on the new disk is recalculated from the info on the standard hard drives and on the parity one. Another advantage of RAID-Z is the fact that even in the event that a drive stops working, the system could switch to a different one instantly without service interruptions of any type. RAID-Z adds one more level of safety for the content that you upload on our cloud web hosting platform in addition to the ZFS file system that uses unique checksums as a way to verify the integrity of each and every file.

RAID in VPS Hosting

The physical servers where we create virtual private server work with fast SSD drives which will increase the speed of your sites noticeably. The drives function in RAID to guarantee that you will not lose any data because of a power loss or a hardware failure. The production servers work with many different drives where the info is saved and one disk is used for parity i.e. one bit is added to all the info copied on it, that makes it easier to recover the site content without loss if a main drive breaks down. In case you use our backup service, the info will be saved on an independent machine that uses standard hard-disk drives and although there is no parity one in this case, they are also in a RAID to make sure that we will have a backup of your website content all the time. With this setup your information will always be safe because it will be available on a lot of drives.