RAID, or Redundant Array of Independent Disks, is a technology of saving data on several hard disk drives which function together as one logical unit. The drives could be physical or logical i.e. in the second case one single drive is split into independent ones via virtualization software. In any case, exactly the same info is kept on all of the drives and the main benefit of employing this kind of a setup is that if a drive stops working, the data will remain available on the other ones. Employing a RAID also improves the overall performance because the input and output operations will be spread among a few drives. There are several types of RAID depending on 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 is written in blocks on one drive after another or all of it is mirrored from one on the others. All of these factors suggest that the error tolerance as well as the performance between the different RAID types can differ.

RAID in Cloud Website Hosting

All content that you upload to your new cloud website hosting account will be placed on fast SSD drives which work in RAID-Z. This configuration is built to employ the ZFS file system that runs on our cloud web hosting platform and it adds an additional level of security 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 information is saved on a couple of disks and at least one of them is a parity disk - whenever info is written on it, an additional bit is added, so in case any drive stops working for some reason, the integrity of the info can be verified by recalculating its bits based on what is saved on the production hard drives and on the parity one. With RAID-Z, the operation of our system will never be interrupted and it will continue working effectively until the faulty drive is changed and the info is synchronized on it.

RAID in Semi-dedicated Servers

The SSD drives which are used for saving any site content uploaded to the semi-dedicated server accounts that we provide work in RAID-Z. This is a special configuration where one or more hard drives are employed for parity i.e. the system will include an additional bit to any data cloned on such a hard drive. If a disk fails and is substituted with another one, what info will be duplicated on the latter shall be a combination calculated between the data on the remaining disks and that on the parity one. This is done to guarantee that the information on the new drive shall be accurate. During the procedure, the RAID will continue functioning normally and the malfunctioning drive won't have an impact on the proper operation of your Internet sites by any means. Using SSDs in RAID-Z is an impressive addition to the ZFS file system which runs on our advanced cloud platform with regard to preserving the integrity of your files as ZFS uses unique digital identifiers called checksums in order to avoid silent data corruption.

RAID in VPS Servers

If you employ one of our VPS server solutions, any content that you upload will be stored on SSD drives that work in RAID. At least one drive is intended for parity to ensure the integrity of your data. In simple terms, this is a special drive where information is copied with one bit added to it. If a disk from the RAID stops functioning, your sites will continue working and when a new disk replaces the defective one, the bits of the information that will be duplicated on it are calculated using the healthy and the parity drives. That way, any chance of corrupting data during the process is averted. We also employ conventional hard disk drives that operate in RAID for storing backups, so if you include this service to your VPS plan, your website content will be stored on multiple drives and you'll never need to worry about its integrity even in the event of multiple drive breakdowns.