RAID, which is an acronym of Redundant Array of Independent Disks, is a software or hardware storage virtualization technology which makes it possible for a system to take advantage of a number of hard drives as a single logical unit. To put it differently, all of the drives are used as one and the info on all of them is identical. This kind of a setup has two key advantages over using just a single drive to store data - the first one is redundancy, so in the event that one drive stops working, the data will be accessible through the remaining ones, and the second is better performance because the input/output, or reading/writing operations will be distributed among multiple drives. You can find different RAID types based on what amount of drives are employed, if reading and writing are both done from all drives simultaneously, if data is written in blocks on one drive after another or is mirrored between drives in the same time, and so on. Determined by the exact setup, the error tolerance and the performance may differ.
RAID in Shared Website Hosting
The revolutionary cloud hosting platform where all shared website hosting accounts are made uses super fast SSD drives as an alternative to the standard HDDs, and they function in RAID-Z. With this setup, numerous hard disks operate together and at least 1 is a dedicated parity disk. Put simply, when data is written on the remaining drives, it is cloned on the parity one adding an extra bit. This is performed for redundancy as even if some drive fails or falls out of the RAID for whatever reason, the info can be rebuilt and verified using the parity disk and the data saved on the other ones, so not a thing will be lost and there will be no service disorders. This is another level of protection for your information together with the cutting-edge ZFS file system that uses checksums to guarantee that all of the data on our servers is intact and is not silently corrupted.
RAID in Semi-dedicated Hosting
In case you host your Internet sites in a semi-dedicated hosting account from our firm, all the content which you upload will be kept on SSD drives which work in RAID-Z. With this kind of RAID, at least one of the hard disks is employed for parity - when data is synchronized between the disks, an additional bit is added to it on the parity one. The purpose behind this is to ensure the integrity of the information which is duplicated to a new drive in case one of the hard drives in the RAID fails because the content being copied on the brand new disk is recalculated from the data on the standard drives and on the parity one. Another advantage of RAID-Z is the fact that even if a drive stops working, the system could switch to another one quickly without service disruptions of any sort. RAID-Z adds an additional level of security for the content which you upload on our cloud hosting platform along with the ZFS file system which uses unique checksums to validate the integrity of every single file.