RAID, or Redundant Array of Independent Disks, is a technology for storing data on multiple hard drives that operate together as a single logical unit. The drives can be physical or logical i.e. in the second case a single drive is divided into individual ones via virtualization software. In any case, the same info is kept on all the drives and the basic benefit of using this type of a setup is that if a drive stops working, the data shall still be available on the remaining ones. Employing a RAID also enhances the performance because the input and output operations will be spread among several drives. There are several kinds of RAID depending on how many drives are used, whether writing is carried out on all the drives in real time or just on one, and how the info is synced between the hard drives - whether it is written in blocks on one drive after another or all of it is mirrored from one on the others. All of these factors indicate that the fault tolerance and the performance between the different RAID types could differ.

RAID in Cloud Web Hosting

All the content that you upload to your new cloud web hosting account will be stored on fast SSD drives which work in RAID-Z. This setup is built to use the ZFS file system that runs on our cloud Internet hosting platform and it adds another level of protection for your content in addition to the real-time checksum authentication which ZFS uses to ensure the integrity of the data. With RAID-Z, the information is stored on a number of disks and at least one is a parity disk - whenever data is recorded on it, an additional bit is added, so in case any drive fails for whatever reason, the integrity of the info can be verified by recalculating its bits in accordance with what is stored on the production hard disks and on the parity one. With RAID-Z, the operation of our system will never be interrupted and it'll continue operating effectively until the malfunctioning drive is changed and the info is synced on it.

RAID in Semi-dedicated Hosting

The info uploaded to any semi-dedicated hosting account is saved on SSD drives that work in RAID-Z. One of the drives in such a setup is used for parity - whenever data is copied on it, an additional bit is added. If a disk happens to be problematic, it will be removed from the RAID without disturbing the operation of the Internet sites as the data will load from the other drives, and when a brand new drive is included, the data which will be duplicated on it will be a combination between the information on the parity disk and data stored on the other hard disks in the RAID. That is done so as to guarantee that the info which is being cloned is correct, so once the new drive is rebuilt, it could be integrated into the RAID as a production one. This is an additional guarantee for the integrity of your info because the ZFS file system that runs on our cloud Internet hosting platform analyzes a unique checksum of all copies of your files on the different drives in order to avoid any possibility of silent data corruption.

RAID in VPS Hosting

All virtual private server accounts which we offer are created on physical servers which employ SSD drives functioning in RAID. At least 1 drive is employed for parity - one additional bit is included in the information cloned on it and if a main disk breaks down, this bit makes it easier to recalculate the bits of the files on the damaged disk drive so that the accurate info is restored on the new drive included in the RAID. At the same time, your Internet sites will stay online since all the data will still load from at least 1 more hard drive. In the event that you add regular backups to your VPS plan, a copy of the information will be kept on standard hard disks that also operate in RAID since we want to make sure that any kind of site content you upload will be risk-free at all times. Employing multiple hard disks in RAID for all the main and backup servers enables us to offer fast and reliable hosting service.