RAID, which is an acronym of Redundant Array of Independent Disks, is a software or hardware storage virtualization technology which permits a system to employ many hard drives as one single logical unit. Simply put, all of the drives are used as one and the info on all of them is identical. This type of a setup has 2 major advantages over using a single drive to save data - the first one is redundancy, so if one drive breaks down, the data will be accessible through the others, and the second is improved performance because the input/output, or reading/writing operations will be spread among a number of drives. There are different RAID types depending on what number of drives are employed, if reading and writing are both handled from all the drives concurrently, whether data is written in blocks on one drive after another or is mirrored between drives in the same time, and many others. According to the exact setup, the fault tolerance and the performance vary.

RAID in Website Hosting

The SSD drives which our cutting-edge cloud web hosting platform employs for storage operate in RAID-Z. This type of RAID is designed to work with the ZFS file system that runs on the platform and it uses the so-called parity disk - a specific drive where info stored on the other drives is copied with an additional bit added to it. If one of the disks stops working, your websites will continue working from the other ones and as soon as we replace the faulty one, the info which will be cloned on it will be rebuilt from what is stored on the other drives together with the information from the parity disk. This is performed in order to be able to recalculate the elements of each file adequately and to confirm the integrity of the information copied on the new drive. This is another level of security for the content which you upload to your website hosting account together with the ZFS file system that analyzes a unique digital fingerprint for every single file on all of the drives in real time.

RAID in Semi-dedicated Servers

The SSD drives that are used for keeping any site content uploaded to the semi-dedicated server accounts which we provide operate in RAID-Z. This is a special configuration where one or more hard drives are employed for parity i.e. the system will add an extra bit to any data duplicated on this type of a drive. In the event that a disk fails and is replaced with another one, what data will be copied on the latter shall be a combination calculated between the data on the other hard disks and that on the parity one. This is done to guarantee that the information on the new drive shall be correct. Throughout the procedure, the RAID will continue operating normally and the malfunctioning drive will not have an impact on the adequate operation of your Internet sites by any means. Working with SSDs in RAID-Z is a fantastic addition to the ZFS file system which runs on our revolutionary cloud platform in terms of preserving the integrity of your files since ZFS uses unique digital identifiers identified as checksums to avoid silent data corruption.

RAID in VPS Servers

The physical servers where we make VPS server employ super fast SSD drives which will increase the speed of your Internet sites significantly. The disk drives work in RAID to make sure that you won't lose any data because of a power loss or a hardware failure. The production servers employ many different drives where the data is stored and one disk is used for parity i.e. one bit is added to all the information copied on it, that makes it much easier to restore the content without loss if a main drive breaks down. If you choose our backup service, your data will be kept on a separate machine which uses standard hard-disk drives and though there is no parity one in this case, they are also in a RAID to guarantee that we will have a backup of your content all of the time. With this type of setup your information will always be safe as it will be available on multiple drives.