RAID, or Redundant Array of Independent Disks, is a technology of saving data on a number hard disk drives that operate together as a single logical unit. The drives could be physical or logical i.e. in the latter case one drive is split into individual ones through virtualization software. Either way, the very same info is saved on all of the drives and the main advantage of using such a setup is that in case a drive stops working, the data shall still be available on the remaining ones. Having a RAID also enhances the performance because the input and output operations will be spread among a couple of drives. There are several types of RAID based on how many hard drives are used, whether writing is performed on all drives in real time or just on a single one, and how the information is synced between the drives - whether it's written in blocks on one drive after another or it is mirrored from one on the others. These factors mean that the error tolerance and the performance between the different RAID types can differ.

RAID in Web Hosting

All content that you upload to your new web hosting account will be placed on fast SSD drives that work in RAID-Z. This configuration is built to work with the ZFS file system that runs on our cloud web hosting platform and it adds an additional level of protection for your website content on top of the real-time checksum validation which ZFS uses to ensure the integrity of the data. With RAID-Z, the info is saved on several disks and at least 1 is a parity disk - whenever data is written on it, an extra bit is added, so if any drive stops working for some reason, the stability of the information can be verified by recalculating its bits in accordance with what is saved on the production disks and on the parity one. With RAID-Z, the operation of our system will not be interrupted and it will continue operating flawlessly until the problematic drive is changed and the info is synced on it.

RAID in Semi-dedicated Servers

The SSD drives which are used for keeping any site content uploaded to the semi-dedicated server accounts which we provide work in RAID-Z. This is a special setup where one or more disk drives are employed for parity i.e. the system will add an additional bit to any data copied on this type of a disk drive. In the event that a disk fails and is substituted with a new one, what information will be cloned on the latter will be a mix calculated between the data on the remaining disks and that on the parity one. This is done to guarantee that the data on the new drive shall be accurate. Throughout the procedure, the RAID will continue operating normally and the problematic drive will not have an effect on the adequate operation of your websites in any way. Working with SSDs in RAID-Z is a fantastic addition to the ZFS file system that runs on our state-of-the-art cloud platform with respect to preserving the integrity of your files since ZFS uses specific digital identifiers referred to as checksums in order to prevent silent data corruption.

RAID in VPS Servers

The physical servers where we generate VPS server employ super fast SSD drives which will boost the speed of your sites substantially. The drives operate in RAID to make sure that you won't lose any info as a result of a power loss or a hardware failure. The production servers work with many different drives where the information is stored and one disk is used for parity i.e. one bit is added to all of the data copied on it, which makes it easier to recover the site content without any loss in case a main drive stops working. In case you pick our backup service, your data will be stored on an independent machine that uses standard hard-disk drives and although there isn't a parity one in this case, they are also in a RAID to make sure that we will have a backup of your site content all the time. With this setup your info will always be safe because it will be available on several drives.