RAID, which is an acronym of Redundant Array of Independent Disks, is a software or hardware storage virtualization technology that allows a system to use multiple hard drives as one single logical unit. Simply put, all the drives are used as one and the data on all of them is identical. This type of a configuration has 2 key 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 info will be accessible from the others, and the second is improved performance because the input/output, or reading/writing operations will be distributed among different drives. You can find different RAID types based on how many drives are employed, if reading and writing are both handled from all 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 error tolerance and the performance may differ.

RAID in Shared Web Hosting

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

RAID in Semi-dedicated Hosting

The data uploaded to any semi-dedicated hosting account is stored on SSD drives which operate in RAID-Z. One of the drives in such a setup is used for parity - each time data is cloned on it, an additional bit is added. In case a disk happens to be defective, it will be taken out of the RAID without disturbing the functioning of the sites as the data will load from the rest of the drives, and when a new drive is included, the data which will be cloned on it will be a blend between the data on the parity disk and data kept on the other hard disks in the RAID. This is done so as to guarantee that the info which is being copied is accurate, so once 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 which runs on our cloud web hosting platform analyzes a special checksum of all the copies of your files on the different drives so as to avoid any possibility of silent data corruption.

RAID in VPS Hosting

The physical servers where we create virtual private server work with quick SSD drives that will raise the speed of your sites considerably. The disk drives function 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 multiple drives where the info is kept 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 recover the content without loss in the event a main drive stops working. In case you choose our backup service, the information will be saved on an individual machine that uses standard hard-disk drives and although there's no parity one in this case, they are also in a RAID to ensure that we will have a backup of your website content at all times. With this particular configuration your data will always be safe as it will be available on many drives.