RAID, or Redundant Array of Independent Disks, is a technology for saving data on multiple hard drives which work together as one single logical unit. The drives can be physical or logical i.e. in the second case one drive is divided into different ones through virtualization software. In either case, identical information is kept on all the drives and the key benefit of using this kind of a setup is that in the event that a drive breaks down, the data will remain available on the other ones. Employing a RAID also improves the performance since the input and output operations will be spread among a number of drives. There are several kinds of RAID based on how many hard drives are used, whether writing is done on all the drives in real time or just on a single one, and how the information is synchronized between the hard drives - whether it is recorded in blocks on one drive after another or it is mirrored from one on the others. All of these factors show that the error tolerance as well as the performance between the various RAID types could differ.

RAID in Shared Web Hosting

All content which you upload to your new shared web hosting account will be saved on quick SSD drives that function in RAID-Z. This setup is built to work with the ZFS file system which runs on our cloud web hosting platform and it adds another level of protection for your site content on top of the real-time checksum verification that ZFS uses to ensure the integrity of the data. With RAID-Z, the info is stored on several disks and at least one is a parity disk - whenever data is recorded 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 disks and on the parity one. With RAID-Z, the functioning of our system won't be interrupted and it'll continue working efficiently until the malfunctioning drive is replaced and the data is synchronized on it.

RAID in Semi-dedicated Hosting

The RAID type which we use for the cloud hosting platform where your semi-dedicated hosting account will be created is known as RAID-Z. What is different about it is that at least one of the disks is used as a parity drive. Simply put, whenever any data is duplicated on this particular disk drive, one more bit is added to it and in the event that a problematic disk is changed, the information that will be cloned on it is a combination of the data on the other hard disks in the RAID and that on the parity one. This is done to ensure that your info is intact. Throughout this process, your Internet sites will be up and running normally since RAID-Z allows for a whole drive to fail without causing any service disturbances and it simply uses one of the other ones as the main production drive. Employing RAID-Z together with the ZFS file system which uses checksums to ensure that no data will get silently corrupted on our servers, you will not have to worry about the integrity of your files.

RAID in VPS Hosting

In case you use one of our virtual private server packages, any content you upload will be stored on SSD drives that work in RAID. At least one drive is used for parity to ensure the integrity of your info. In simple terms, this is a special drive where information is copied with one bit added to it. In case a disk from the RAID stops working, your Internet sites will continue working and when a new disk substitutes the defective one, the bits of the information that will be cloned on it are calculated using the healthy and the parity drives. By doing this, any chance of corrupting data during the process is prevented. We also employ conventional hard disk drives which function in RAID for storing backups, so if you include this service to your VPS plan, your content will be saved on multiple drives and you won't ever have to worry about its integrity even in the event of multiple drive breakdowns.