Redundant Array of Independent Disks, or RAID, is a method of keeping content on multiple hard disk drives simultaneously. A RAID can be software or hardware depending on the hard drives that are used - physical or logical ones, but what is common between them is that they all work as just one single unit where information is stored. The key advantage of employing a RAID is redundancy since the information on all the drives will be the same all of the time, so even if a drive fails for some reason, the data will still be available on the rest of the drives. The general performance will also improve since the reading and writing processes could be split between different drives, so a single one can't be overloaded. There're different kinds of RAIDs where the performance and fault tolerance can vary according to the particular setup - whether information is written on all the drives real-time or it is written on a single drive and then mirrored on another, the number of drives are used for the RAID, etc.

RAID in Web Hosting

All content that you upload to your new web hosting account will be placed on fast SSD drives which work in RAID-Z. This configuration is built to employ the ZFS file system which runs on our cloud hosting platform and it adds another level of security for your content in addition to the real-time checksum validation that ZFS uses to ensure the integrity of the data. With RAID-Z, the data is stored on a number of disks and at least one of them is a parity disk - whenever data is written on it, an extra bit is added, so if any drive stops working for whatever reason, the stability of the information 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 flawlessly until the malfunctioning drive is replaced and the info is synchronized on it.

RAID in Semi-dedicated Hosting

The SSD drives which are used for holding any content uploaded to the semi-dedicated hosting accounts that we offer function 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 duplicated on such a hard drive. In case that a disk fails and is replaced with another one, what data will be cloned on the latter will be a mix calculated between the data on the other hard disks and that on the parity one. This is done to guarantee that the data on the new drive will be correct. During the procedure, the RAID will continue functioning normally and the faulty drive won't have an impact on the normal operation of your sites in any respect. Using SSDs in RAID-Z is an excellent addition to the ZFS file system which runs on our state-of-the-art cloud platform with regard to preserving the integrity of your files as ZFS uses special digital identifiers referred to as checksums so as to prevent silent data corruption.

RAID in VPS Web Hosting

If you take advantage of one of our virtual private server solutions, any content you upload will be stored on SSD drives that work in RAID. At least 1 drive is employed for parity so as to ensure the integrity of the info. In simple terms, this is a special drive where info is copied with one bit added to it. In the event that a disk within the RAID fails, your websites 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 by using the healthy and the parity drives. This way, any probability of corrupting data throughout the process is prevented. We also use standard hard drives which function in RAID for storing backup copies, so if you include this service to your VPS plan, your website 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 failures.