Redundant Array of Independent Disks, or RAID, is a method of storing content on multiple 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, still what is common between them is that they all perform as just one single unit where data is stored. The main advantage of employing a RAID is redundancy because the information on all of the drives shall be the same all of the time, so even in case some drive fails for whatever reason, the info will still be available on the other drives. The overall performance is also enhanced since the reading and writing processes can be split between different drives, so a single one won't be overloaded. There're different types of RAIDs where the performance and fault tolerance may vary depending on the specific setup - whether your data is written on all drives real-time or it is written on a single drive and then mirrored on another, what amount of drives are used for the RAID, and so on.

RAID in Shared Website Hosting

The drives which we use for storage with our state-of-the-art cloud hosting platform are not the standard HDDs, but high-speed solid-state drives (SSD). They operate in RAID-Z - a special setup intended for the ZFS file system which we employ. All of the content that you upload to your shared website hosting account will be stored on multiple drives and at least one of them will be used as a parity disk. This is a specific drive where an extra bit is added to any content copied on it. If a disk in the RAID fails, it will be changed without any service disruptions and the data will be rebuilt 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 in order to ensure the integrity of the data and together with the real-time checksum authentication that the ZFS file system runs on all drives, you will never have to worry about the loss of any data no matter what.

RAID in Semi-dedicated Servers

The data uploaded to any semi-dedicated server account is stored on SSD drives which function in RAID-Z. One of the drives in type of a configuration is used for parity - any time data is copied on it, an additional bit is added. In case a disk turns out to be defective, it will be removed from the RAID without interrupting the work of the Internet sites as the data will load from the remaining drives, and when a new drive is added, the info which will be cloned on it will be a mix between the data on the parity disk and data stored on the other hard drives in the RAID. That is done in order to ensure that the information that is being duplicated is accurate, so as soon as the new drive is rebuilt, it could be included in the RAID as a production one. This is an extra warranty for the integrity of your information because the ZFS file system which runs on our cloud Internet hosting platform analyzes a unique checksum of all copies of the files on the different drives in order to avoid any possibility of silent data corruption.

RAID in VPS Servers

All VPS server accounts which we offer are made on physical servers that take advantage of SSD drives functioning in RAID. At least one drive is employed for parity - one additional bit is added to the information duplicated on it and if a main disk breaks down, this bit makes it much simpler to recalculate the bits of the files on the damaged disk drive so that the accurate data is restored on the new drive added to the RAID. Meanwhile, your websites will still be online because all the information will still load from at least 1 other hard drive. In the event that you add regular backups to your VPS package, a copy of your information will be saved on standard hard drives which also work in RAID since we would like to make certain that any type of website content you upload will be risk-free all of the time. Using multiple drives in RAID for all of the main and backup servers permits us to offer fast and reliable web hosting service.