RAID, or Redundant Array of Independent Disks, is a technology for saving data on several hard drives that function together as one single logical unit. The drives could be physical or logical i.e. in the aforementioned case one drive is split into independent ones using virtualization software. Either way, identical data is kept on all drives and the main advantage of employing this kind of a setup is that if a drive stops working, the data will remain available on the other ones. Having a RAID also boosts the overall performance since the input and output operations will be spread among a number of drives. There are several kinds of RAID depending on how many hard drives are used, whether writing is done on all of the drives in real time or just on a single one, and how the information is synced 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. These factors imply that the fault tolerance and the performance between the various RAID types can differ.

RAID in Website Hosting

All the content which you upload to your new website hosting account will be stored on quick SSD drives which work in RAID-Z. This configuration is built to work with the ZFS file system which runs on our cloud hosting platform and it adds an additional level of security for your content on top of the real-time checksum verification which ZFS uses to guarantee the integrity of the data. With RAID-Z, the data is stored on several disks and at least one is a parity disk - whenever info is recorded on it, an additional bit is added, so if any drive fails for whatever reason, the stability of the info can be verified by recalculating its bits in accordance with what is kept on the production hard drives and on the parity one. With RAID-Z, the operation of our system won't be interrupted and it will continue working efficiently until the malfunctioning drive is changed and the data is synced on it.

RAID in Semi-dedicated Hosting

The RAID type which we employ for the cloud web hosting platform where your semi-dedicated hosting account will be created is named RAID-Z. What is different about it is that at least one of the disks is used as a parity drive. In simple terms, whenever any data is copied on this special hard drive, one more bit is added to it and in case a faulty disk is changed, the info that will be cloned on it is a mix of the data on the remaining hard drives in the RAID and that on the parity one. We do this to make sure that the information is intact. During this process, your sites will be up and running normally because RAID-Z makes it possible for an entire drive to fail without service interruptions and it simply works by using 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 shall get silently corrupted on our servers, you'll never need to worry about the integrity of your files.

RAID in VPS Hosting

In case you take advantage of one of our virtual private server packages, any content which you upload will be stored on SSD drives that work in RAID. At least one drive is used for parity so as to guarantee the integrity of your info. In simple terms, this is a special drive where information is copied with one bit added to it. In the event that a disk in the RAID stops functioning, your sites will continue working and when a new disk substitutes the defective one, the bits of the data that will be duplicated on it are calculated by using the healthy and the parity drives. By doing this, any potential for corrupting data throughout the process is averted. We also use regular hard drives that operate in RAID for storing backup copies, so in case you add this service to your VPS plan, your website content will be saved on multiple drives and you will never have to worry about its integrity even in the event of multiple drive breakdowns.