RAID, or Redundant Array of Independent Disks, is a technology for keeping data on a number hard drives that function together as a single logical unit. The drives can be physical or logical i.e. in the second case a single drive is split into independent ones through virtualization software. In any case, the same information is saved on all drives and the key advantage of employing this type of a setup is that in case a drive fails, the data will remain available on the remaining ones. Having a RAID also enhances the performance because the input and output operations will be spread among a few drives. There are several kinds of RAID dependant upon how many hard drives are used, whether writing is carried out on all drives in real time or just on a single one, and how the information is synchronized between the drives - whether it's written in blocks on one drive after another or all of it is mirrored from one on the others. These factors indicate that the fault tolerance as well as the performance between the different RAID types could differ.

RAID in Cloud Web Hosting

The hard disks which we use for storage with our outstanding cloud hosting platform are not the standard HDDs, but fast solid-state drives (SSD). They function in RAID-Z - a special setup intended for the ZFS file system that we work with. All the content that you upload to the cloud web hosting account will be held on multiple drives and at least one shall be employed as a parity disk. This is a special drive where an extra bit is included to any content copied on it. In the event that a disk in the RAID fails, it will be replaced without any service interruptions 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 so as to guarantee the integrity of the information and along with the real-time checksum verification that the ZFS file system runs on all drives, you will never have to concern yourself with the loss of any info no matter what.

RAID in Semi-dedicated Servers

The RAID type which we use for the cloud web hosting platform where your semi-dedicated server account shall be created is named RAID-Z. What is different about it is that at least 1 of the disks is used as a parity drive. Put simply, whenever any kind of data is copied on this specific drive, one more bit is included to it and in the event that a problematic disk is changed, the information which will be duplicated on it is a combination of the data on the other hard disks 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 sites will be working normally as RAID-Z enables an entire drive to fail without causing 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 guarantee that no data can get silently corrupted on our servers, you won't ever need to worry about the integrity of your files.

RAID in VPS Servers

All VPS server accounts that our company provides are made on physical servers which use SSD drives working in RAID. At least one drive is employed for parity - one extra bit is added to the information copied 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 drive so that the correct data is recovered on the new drive included in the RAID. Meanwhile, your websites will remain online as all the info will still load from at least one other drive. In the event that you add routine backups to your VPS plan, a copy of your information will be kept on standard disk drives that also work in RAID as we want to make certain that any sort of site content you add will be protected all of the time. Using multiple drives in RAID for all main and backup servers permits us to offer fast and reliable web hosting service.