Redundant Array of Independent Disks, or RAID, is a method of keeping content on multiple hard disks at the same time. A RAID could be software or hardware based on the drives which are used - physical or logical ones, yet what is common between them is the fact that they all function as one single unit where your information is kept. The main advantage of employing a RAID is redundancy since the information on all drives will be the same at all times, so even in the event that one of the drives fails for whatever reason, the data will still be present on the rest of the drives. The general performance will also improve as the reading and writing processes can be split between various drives, so a single one will not be overloaded. There are different sorts of RAIDs where the performance and fault tolerance could differ based on the specific setup - whether 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 number of drives are used for the RAID, etc.

RAID in Cloud Hosting

The drives that we employ for storage with our outstanding cloud Internet hosting platform are not the traditional HDDs, but quick solid-state drives (SSD). They function in RAID-Z - a special setup designed for the ZFS file system which we employ. Any content that you upload to your cloud hosting account will be saved on multiple drives and at least one shall be used as a parity disk. This is a special drive where an extra bit is included to any content copied on it. If a disk in the RAID fails, it will be replaced without service interruptions and the data will be rebuilt on the new drive by recalculating its bits using the data on the parity disk plus that on the remaining disks. This is done to ensure the integrity of the information and together with the real-time checksum verification which the ZFS file system performs on all drives, you will never have to concern yourself with the loss of any data no matter what.

RAID in Semi-dedicated Hosting

The RAID type which we employ for the cloud Internet hosting platform where your semi-dedicated hosting account shall be created is named RAID-Z. What's different about it is that at least one of the disks is used as a parity drive. Put simply, whenever any data is duplicated on this specific drive, one more bit is added to it and in the event that a faulty disk is changed, the data that will be duplicated on it is a combination of the data on the remaining disk drives in the RAID and that on the parity one. It's done this way to guarantee that the info is intact. Throughout this process, your websites will be functioning normally as RAID-Z allows for an entire drive to fail without any service interruptions and it simply uses one of the other ones as the main production drive. Using RAID-Z together with the ZFS file system that 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 Hosting

The SSD drives that we use on the physical machines where we generate virtual private servers work in RAID to ensure that any content that you upload will be available and intact at all times. At least 1 drive is used for parity - one bit of data is added to any data copied on it. In the event that a main drive fails, it is changed and the info which will be copied on it is calculated between the other drives and the parity one. It's done this way to ensure that the correct information is copied and that not a single file is corrupted since the new drive will be used in the RAID afterwards. Also, we use hard disk drives operating in RAID on the backup servers, so in the event that you add this upgrade to your VPS plan, you'll use an even more reliable Internet hosting service as your content will be available on multiple drives irrespective of any unpredicted hardware malfunction.