RAID, or Redundant Array of Independent Disks, is a technology of keeping data on a number hard drives that function together as one logical unit. The drives could be physical or logical i.e. in the aforementioned case a single drive is divided into separate ones using virtualization software. Either way, the very same info is kept on all the drives and the main benefit of using this kind of a setup is that in the event that a drive fails, the data will still be available on the other ones. Using a RAID also boosts the overall performance as the input and output operations will be spread among a number of drives. There are several kinds of RAID dependant upon how many drives are used, whether writing is carried out on all the drives in real time or just on one, and how the data is synchronized between the drives - whether it's written in blocks on one drive after another or it is mirrored from one on the others. All these factors mean that the fault tolerance as well as the performance between the various RAID types may vary.
RAID in Cloud Website Hosting
The cutting-edge cloud web hosting platform where all cloud website hosting accounts are generated uses quick SSD drives instead of the standard HDDs, and they work in RAID-Z. With this configuration, numerous hard disks operate together and at least a single one is a dedicated parity disk. Put simply, when data is written on the other drives, it's cloned on the parity one adding an extra bit. This is done for redundancy as even in case some drive fails or falls out of the RAID for whatever reason, the information can be rebuilt and verified using the parity disk and the data stored on the other ones, thus practically nothing will be lost and there will be no service disorders. This is another level of protection for your info together with the cutting-edge ZFS file system which uses checksums to guarantee that all data on our servers is undamaged and is not silently corrupted.
RAID in Semi-dedicated Hosting
In case you host your websites in a semi-dedicated hosting account from our company, all the content that you upload will be stored on SSD drives that work in RAID-Z. With this form of RAID, at least one of the drives is used for parity - when data is synced between the disks, an additional bit is added to it on the parity one. The idea behind this is to ensure the integrity of the data that is copied to a brand new drive if one of the drives in the RAID stops working because the content being copied on the new disk is recalculated from the info on the standard drives and on the parity one. An additional advantage of RAID-Z is the fact that even if a drive fails, the system can switch to a different one immediately without service interruptions of any type. RAID-Z adds one more level of security for the content you upload on our cloud Internet hosting platform in addition to the ZFS file system that uses unique checksums so as to validate the integrity of every single file.