Redundant Array of Independent Disks, or RAID, is a method of keeping content on multiple hard drives simultaneously. A RAID can be software or hardware depending on the hard drives which are used - physical or logical ones, however what is common between them is that they all operate as one single unit where data is saved. The main advantage of employing a RAID is redundancy since the information on all the drives will be identical 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 overall performance is also better because the reading and writing processes could be split between various drives, so a single one will never be overloaded. There are different types of RAIDs where the performance and fault tolerance could differ according to the exact setup - whether your data is written on all of the drives real-time or it's written on a single drive and afterwards mirrored on another, the number of drives are used for the RAID, etcetera.

RAID in Cloud Web Hosting

All content which you upload to your new cloud web hosting account will be held on quick SSD drives which work in RAID-Z. This configuration is built to work with the ZFS file system that runs on our cloud hosting platform and it adds another level of protection for your content on top of the real-time checksum validation which ZFS uses to ensure the integrity of the data. With RAID-Z, the data is saved on a number of disks and at least one of them is a parity disk - whenever information is written on it, an additional bit is added, so in the event that any drive stops functioning for some 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 functioning of our system will never be interrupted and it'll continue functioning smoothly until the faulty drive is replaced and the information is synchronized on it.

RAID in Semi-dedicated Servers

The SSD drives that are used for storing any content uploaded to the semi-dedicated server accounts which we offer work in RAID-Z. This is a specific configuration where one or more disk drives are employed for parity i.e. the system will include an additional bit to any data cloned on this type of a disk drive. In case that a disk fails and is substituted with a new one, what data will be duplicated on the latter shall be a combination calculated between the data on the other disks and that on the parity one. This is done to guarantee that the info on the new drive shall be accurate. During the procedure, the RAID will continue operating normally and the malfunctioning drive will not impact the normal operation of your Internet sites in any way. Working with SSDs in RAID-Z is a great addition to the ZFS file system which runs on our cutting-edge cloud platform in terms of preserving the integrity of your files because ZFS uses special digital identifiers referred to as checksums so as to prevent silent data corruption.

RAID in VPS Servers

In case you use one of our VPS server solutions, any content that you upload will be saved on SSD drives which work in RAID. At least one drive is used for parity to guarantee the integrity of the info. In simple terms, this is a special drive where info is copied with one bit added to it. If a disk part of the RAID stops working, your websites will continue working and when a new disk replaces the flawed one, the bits of the info that will be copied on it are calculated using the healthy and the parity drives. This way, any possibility of corrupting data throughout the process is avoided. We also employ conventional hard drives which work in RAID for storing backups, so if you add this service to your VPS package, your website content will be saved on multiple drives and you'll never have to worry about its integrity even in the event of multiple drive failures.