RAID, which is short for Redundant Array of Independent Disks, is a software or hardware storage virtualization technology that allows a system to employ multiple hard drives as a single logical unit. In other words, all the drives are used as one and the data on all of them is identical. This kind of a configuration has two huge advantages over using a single drive to save data - the first is redundancy, so in case one drive stops working, the data will be accessed from the others, and the second one is improved performance since the input/output, or reading/writing operations will be distributed among a number of drives. There are different RAID types based on the number of drives are used, whether reading and writing are both performed from all the drives at the same time, if data is written in blocks on one drive after another or is mirrored between drives in the same time, etcetera. According to the particular setup, the error tolerance and the performance vary.

RAID in Cloud Website Hosting

The advanced cloud Internet hosting platform where all cloud website hosting accounts are generated employs fast SSD drives rather than the traditional HDDs, and they work in RAID-Z. With this setup, several hard disk drives function together and at least 1 is a dedicated parity disk. Put simply, when data is written on the remaining drives, it is duplicated on the parity one adding an extra bit. This is carried out for redundancy as even if a drive fails or falls out of the RAID for some reason, the data can be rebuilt and verified thanks to the parity disk and the data saved on the other ones, therefore absolutely nothing will be lost and there won't be any service disorders. This is one more level of protection for your information in addition to the cutting-edge ZFS file system which uses checksums to guarantee that all the data on our servers is undamaged and is not silently corrupted.

RAID in Semi-dedicated Hosting

The SSD drives that are used for storing any site content uploaded to the semi-dedicated hosting accounts that we offer function in RAID-Z. This is a specific setup where one or more hard drives are used for parity i.e. the system will include an extra bit to any data duplicated on such a hard drive. In case that a disk fails and is replaced with another one, what info will be duplicated on the latter shall be a mix calculated between the data on the remaining disks and that on the parity one. This is done to guarantee that the info on the new drive shall be accurate. During the procedure, the RAID will continue working adequately and the problematic drive will not have an impact on the normal operation of your Internet sites in any way. Using SSDs in RAID-Z is an amazing addition to the ZFS file system which runs on our revolutionary cloud platform in terms of preserving the integrity of your files since ZFS uses unique digital identifiers identified as checksums so as to avoid silent data corruption.

RAID in VPS Hosting

The SSD drives which we use on the machines where we generate virtual private servers work in RAID to make sure that any content which you upload will be available and intact all the time. At least a single drive is employed for parity - one bit of information is added to any data cloned on it. In case a main drive breaks down, it is changed and the data that will be cloned on it is calculated between the remaining drives and the parity one. This is done to make sure that the required info is copied and that no file is corrupted as the new drive will be incorporated into the RAID afterwards. We also use hard disk drives working in RAID on the backup servers, so if you add this upgrade to your VPS plan, you will use an even more reliable web hosting service because your content will be available on multiple drives irrespective of any kind of unexpected hardware malfunction.