Redundant Array of Independent Disks, or RAID, is a method of saving content on several hard disk drives concurrently. A RAID can be software or hardware based on the HDDs that are used - physical or logical ones, however what’s common between them is the fact that they all work as just one single unit where your information is stored. The main advantage of using a RAID is redundancy since the info on all drives shall be exactly the same all the time, so even in the event that a drive fails for some reason, the information will still be present on the remaining drives. The general performance is enhanced as well because the reading and writing processes could be split between a number of drives, so a single one can't be overloaded. There're different types of RAIDs where the performance and fault tolerance may differ according to the exact setup - whether your data is written on all drives real-time or it's written on one drive and afterwards mirrored on another, what number of drives are used for the RAID, and many others.

RAID in Website Hosting

The revolutionary cloud hosting platform where all website hosting accounts are generated employs fast SSD drives instead of the traditional HDDs, and they function in RAID-Z. With this configuration, numerous hard drives operate together and at least a single one is a dedicated parity disk. In simple terms, when data is written on the remaining drives, it's duplicated on the parity one adding an extra bit. This is carried out for redundancy as even in case some drive fails or falls out of the RAID for some reason, the information can be rebuilt and verified thanks to the parity disk and the data recorded on the other ones, thus not a thing will be lost and there won't be any service disturbances. This is another level of protection for your data together with the state-of-the-art ZFS file system which uses checksums to ensure that all of the data on our servers is undamaged and is not silently corrupted.

RAID in Semi-dedicated Servers

If you host your Internet sites within a semi-dedicated server account from our firm, any content that you upload will be saved on SSD drives which operate in RAID-Z. With this kind of RAID, at least 1 of the drives is used for parity - when data is synced between the drives, an extra bit is added to it on the parity one. The idea behind this is to ensure the integrity of the info that is copied to a brand new drive if one of the drives in the RAID stops functioning because the site 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 immediately without service disturbances of any sort. RAID-Z adds an extra level of safety for the content which you upload on our cloud hosting platform together with the ZFS file system that uses unique checksums to verify the integrity of each and every file.

RAID in VPS Servers

The SSD drives that we use on the physical machines where we create VPS servers function in RAID to ensure that any content which you upload will be available and intact all the time. At least 1 drive is used for parity - one bit of info is added to any data cloned on it. In the event that a main drive stops working, it is replaced and the information that will be copied on it is calculated between the remaining drives and the parity one. It's done this way to ensure that the right data is copied and that not a single file is corrupted since the new drive will be a part of the RAID afterwards. In addition, we use hard drives working in RAID on the backup servers, so if you add this upgrade to your VPS package, you will use an even more reliable web hosting service since your content will be available on multiple drives regardless of any unforeseen hardware malfunction.