Redundant Array of Independent Disks, or RAID, is a way of storing content on multiple hard drives simultaneously. A RAID can be software or hardware depending on the drives which are used - physical or logical ones, still what is common between them is the fact that they all function as one single unit where your information is stored. The main advantage of using a RAID is redundancy because the information on all of the drives is exactly the same at all times, so even in case one of the drives fails for whatever reason, the info will still be present on the rest of the drives. The general performance will also improve as the reading and writing processes could be split between different drives, so a single one will not be overloaded. There're different sorts of RAIDs where the efficiency and fault tolerance may vary depending on the exact setup - whether your data is written on all of the drives real-time or it's written on a single drive and after that mirrored on another, what amount of drives are used for the RAID, and many others.

RAID in Shared Website Hosting

The SSD drives that our cutting-edge cloud web hosting platform uses for storage operate in RAID-Z. This kind of RAID is developed to work with the ZFS file system that runs on the platform and it works by using the so-called parity disk - a special drive where info located on the other drives is duplicated with an extra bit added to it. In the event that one of the disks stops working, your Internet sites will continue working from the other ones and after we replace the bad one, the info which will be copied on it will be rebuilt from what is stored on the other drives along with the data from the parity disk. This is performed so as to be able to recalculate the bits of each and every file correctly and to authenticate the integrity of the data duplicated on the new drive. This is one more level of security for the info you upload to your shared website hosting account together with the ZFS file system that analyzes a unique digital fingerprint for each file on all hard drives in real time.

RAID in Semi-dedicated Hosting

The info uploaded to any semi-dedicated hosting account is saved on SSD drives that operate in RAID-Z. One of the drives in type of a configuration is used for parity - every time data is cloned on it, an extra bit is added. If a disk turns out to be faulty, it will be removed from the RAID without disturbing the operation of the sites since the data will load from the rest of the drives, and when a new drive is included, the data that will be cloned on it will be a mix between the info on the parity disk and data stored on the other hard drives in the RAID. This is done in order to guarantee that the info that is being copied is correct, so once the new drive is rebuilt, it could be included in the RAID as a production one. This is an extra guarantee for the integrity of your info because the ZFS file system that runs on our cloud Internet hosting platform compares a unique checksum of all of the copies of the files on the different drives to avoid any probability of silent data corruption.

RAID in VPS

In case you employ one of our virtual private server packages, any content which you upload will be stored on SSD drives which function in RAID. At least a single drive is intended for parity to ensure the integrity of your info. In simple terms, this is a special drive where data is copied with one bit added to it. In the event that a disk in the RAID stops working, your websites will continue working and when a new disk replaces the faulty one, the bits of the data that will be cloned on it are calculated by using the healthy and the parity drives. This way, any chance of corrupting data throughout the process is averted. We also employ regular hard disks which function in RAID for storing backup copies, so should you add this service to your VPS package, your website content will be saved on multiple drives and you will never need to worry about its integrity even in the event of multiple drive breakdowns.