RAID, which stands short for Redundant Array of Independent Disks, is a software or hardware storage virtualization technology which makes it possible for a system to employ several hard drives as one single logical unit. In other words, all drives are used as one and the data on all of them is the same. Such a configuration has 2 huge advantages over using just a single drive to store data - the first is redundancy, so in the event that one drive doesn't work, the information will be accessible from the others, and the second one is better performance as the input/output, or reading/writing operations will be spread among different drives. There are different RAID types depending on what number of drives are employed, whether reading and writing are both performed from all of the drives simultaneously, whether data is written in blocks on one drive after another or is mirrored between drives in the same time, etcetera. Depending on the particular setup, the fault tolerance and the performance may differ.

RAID in Cloud Hosting

The SSD drives which our cutting-edge cloud web hosting platform uses for storage work in RAID-Z. This kind of RAID is designed to work with the ZFS file system that runs on the platform and it works by using the so-called parity disk - a specific drive where information located on the other drives is copied with an additional bit added to it. In case one of the disks stops functioning, your sites will continue working from the other ones and after we replace the malfunctioning one, the info which will be cloned on it will be recovered from what is stored on the rest of the drives along with the information from the parity disk. This is done so as to be able to recalculate the elements of every file properly and to validate the integrity of the info copied on the new drive. This is another level of security for the information that you upload to your cloud hosting account together with the ZFS file system that analyzes a unique digital fingerprint for each file on all the hard drives in real time.

RAID in Semi-dedicated Hosting

The RAID type that we use for the cloud hosting platform where your semi-dedicated hosting account will be created is named RAID-Z. What's different about it is that at least one of the disks is used as a parity drive. Put simply, whenever any kind of data is copied on this particular drive, one more bit is added to it and in case a malfunctioning disk is changed, the data which will be duplicated on it is a combination of the data on the other hard drives in the RAID and that on the parity one. It's done this way to guarantee that your data is intact. During this process, your Internet sites will be up and running normally since RAID-Z allows for an entire drive to fail without causing any service disruptions and it simply works by using one of the other ones as the main production drive. Using RAID-Z together with the ZFS file system which uses checksums to ensure that no data shall get silently corrupted on our servers, you will never have to worry about the integrity of your files.

RAID in VPS Hosting

The physical servers where we generate virtual private server employ high-speed SSD drives which will raise the speed of your Internet sites noticeably. The drives function in RAID to ensure that you will not lose any data as a result of a power loss or a hardware malfunction. The production servers work with a variety of drives where the information is saved and one disk is used for parity i.e. one bit is added to all of the data copied on it, which makes it easier to restore the content without any loss in the event a main drive breaks down. If you pick our backup service, the information will be kept on an independent machine that uses standard hard-disk drives and though there is no parity one in this case, they are also in a RAID to make sure that we will have a backup copy of your website content all the time. With this type of setup your information will always be safe as it will be available on multiple disk drives.