RAID, which is an acronym of Redundant Array of Independent Disks, is a software or hardware storage virtualization technology which permits a system to use 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. Such a configuration has 2 major advantages over using just a single drive to keep data - the first is redundancy, so in the event that one drive breaks down, the information will be accessible through the others, and the second one is improved performance because the input/output, or reading/writing operations will be distributed among several drives. You can find different RAID types depending on the number of drives are employed, if reading and writing are both performed from all of the drives concurrently, if data is written in blocks on one drive after another or is mirrored between drives in the same time, and many others. Based on the particular setup, the error tolerance and the performance could differ.

RAID in Shared Website Hosting

The SSD drives that our cutting-edge cloud web hosting platform employs for storage work in RAID-Z. This sort of RAID is created to work with the ZFS file system that runs on the platform and it uses the so-called parity disk - a special drive where info kept on the other drives is copied with an extra bit added to it. If one of the disks stops functioning, your websites will continue working from the other ones and after we replace the bad one, the data that will be duplicated on it will be rebuilt from what is stored on the remaining drives together with the info from the parity disk. This is performed so as to be able to recalculate the elements of each file correctly and to validate the integrity of the info cloned on the new drive. This is another level of security for the info that you upload to your shared website hosting account in addition to the ZFS file system that compares a special digital fingerprint for each and every file on all drives in real time.

RAID in Semi-dedicated Servers

The SSD drives that are used for holding any site content uploaded to the semi-dedicated server accounts which we offer work in RAID-Z. This is a special configuration where one or more disk drives are used for parity i.e. the system will include an extra bit to any data copied on this type of a hard drive. In case that a disk fails and is replaced with a new one, what information will be duplicated on the latter will be a combination calculated between the data on the other drives and that on the parity one. This is done to make sure that the data on the new drive will be accurate. Throughout the process, the RAID will continue working normally and the faulty drive won't have an effect on the normal operation of your Internet sites at all. Using SSDs in RAID-Z is an excellent addition to the ZFS file system that runs on our cutting-edge cloud platform with regards to preserving the integrity of your files as ZFS uses special digital identifiers identified as checksums to avoid silent data corruption.

RAID in VPS Servers

In case you employ one of our VPS server packages, any content you upload will be saved on SSD drives which operate in RAID. At least 1 drive is intended for parity to ensure the integrity of the information. In simple terms, this is a special drive where info is copied with one bit added to it. In case a disk within the RAID breaks down, your websites will continue working and when a new disk takes the place of the malfunctioning one, the bits of the data that will be cloned on it are calculated by using the healthy and the parity drives. By doing this, any possibility of corrupting data during the process is prevented. We also employ standard hard drives which operate in RAID for storing backups, so in case you include this service to your VPS plan, your content will be saved on multiple drives and you won't ever need to worry about its integrity even in the event of multiple drive breakdowns.