Redundant Array of Independent Disks, or RAID, is a method of saving content on a number of hard disk drives at the same time. A RAID could be software or hardware depending on the hard drives which are used - physical or logical ones, but what is common between them is that they all work as a single unit where data is stored. The main advantage of using a RAID is redundancy because the info on all the drives will be exactly the same all the time, so even in the event that some drive fails for whatever reason, the information will still be present on the other drives. The general performance is enhanced as well since the reading and writing processes will be split between multiple drives, so a single one won't be overloaded. There are different sorts of RAIDs where the functionality and fault tolerance may vary according to the exact setup - whether information is written on all drives real-time or it is written on a single drive and after that mirrored on another, what number of drives are used for the RAID, and many others.

RAID in Website Hosting

The hard disks which we employ for storage with our revolutionary cloud Internet hosting platform are not the classic HDDs, but quick solid-state drives (SSD). They work in RAID-Z - a special setup developed for the ZFS file system that we work with. Any content that you upload to your website hosting account will be held on multiple hard disks and at least one of them shall be employed as a parity disk. This is a specific drive where a further bit is included to any content copied on it. In the event that a disk in the RAID stops functioning, it'll be changed without any service disturbances and the information will be recovered on the new drive by recalculating its bits thanks to the data on the parity disk along with that on the remaining disks. This is done to ensure the integrity of the data and together with the real-time checksum verification that the ZFS file system performs on all drives, you'll never need to be concerned about the loss of any information no matter what.

RAID in Semi-dedicated Servers

The RAID type which we use for the cloud Internet hosting platform where your semi-dedicated server account will be created is called RAID-Z. What's different about it is that at least 1 of the disks is employed as a parity drive. In simple terms, whenever any kind of data is duplicated on this special drive, one more bit is added to it and in case a faulty disk is replaced, the data which will be copied on it is a mix of the data on the remaining drives in the RAID and that on the parity one. It's done this way to ensure that your info is intact. Throughout this process, your websites will be up and running normally since RAID-Z enables an entire drive to fail without service interruptions and it simply works by using one of the other ones as the main production drive. Using RAID-Z together with the ZFS file system which uses checksums to ensure that no data will get silently corrupted on our servers, you won't ever have to worry about the integrity of your files.

RAID in VPS Servers

In case you employ one of our VPS server plans, any content you upload will be saved on SSD drives that operate in RAID. At least one drive is used for parity to guarantee the integrity of your information. In simple terms, this is a special drive where info is copied with one bit added to it. In the event that a disk from the RAID fails, your Internet sites will continue working and when a new disk replaces the flawed one, the bits of the data that will be cloned on it are calculated using the healthy and the parity drives. By doing this, any chance of corrupting data throughout the process is prevented. We also employ conventional hard disk drives that operate in RAID for storing backups, so should you add this service to your VPS package, your site content will be kept on multiple drives and you will never need to worry about its integrity even in the event of multiple drive failures.