RAID, which is short for Redundant Array of Independent Disks, is a software or hardware storage virtualization technology that makes it possible for a system to take advantage of a number of hard drives as a single logical unit. To put it differently, all the drives are used as one and the info on all of them is identical. This type of a configuration has two major advantages over using a single drive to keep data - the first is redundancy, so if one drive stops working, the information will be accessed through the others, and the second one is better performance as the input/output, or reading/writing operations will be distributed among different drives. There are different RAID types depending on what number of drives are used, whether reading and writing are both done from all of the drives at the same time, if data is written in blocks on one drive after another or is mirrored between drives in the same time, and many others. Determined by the exact setup, the fault tolerance and the performance may vary.

RAID in Cloud Hosting

The SSD drives that our cutting-edge cloud hosting platform employs for storage operate in RAID-Z. This type of RAID is intended to work with the ZFS file system that runs on the platform and it employs the so-called parity disk - a specific drive where information located on the other drives is cloned with an additional bit added to it. In case one of the disks stops functioning, your Internet sites will continue working from the other ones and as soon as we replace the faulty one, the info that will be cloned on it will be recovered from what is stored on the other drives together with the information from the parity disk. This is done in order to be able to recalculate the bits of each and every file correctly and to verify the integrity of the information copied on the new drive. This is another level of security for the content that you upload to your cloud hosting account together with the ZFS file system which compares a special digital fingerprint for each and every file on all of the hard drives in real time.

RAID in Semi-dedicated Servers

The SSD drives that are used for storing any site content uploaded to the semi-dedicated server accounts which we provide operate in RAID-Z. This is a specific setup where one or more disk drives are employed for parity i.e. the system will add an additional bit to any data cloned on this kind of a hard drive. If a disk fails and is substituted with a new one, what information will be duplicated on the latter will be a combination calculated between the data on the other hard disks and that on the parity one. This is done to ensure that the data on the new drive will be correct. During the procedure, the RAID will continue functioning normally and the faulty drive will not impact the adequate operation of your websites in any respect. Using SSDs in RAID-Z is an amazing addition to the ZFS file system that runs on our advanced cloud platform with regards to preserving the integrity of your files as ZFS uses specific digital identifiers identified as checksums so as to avoid silent data corruption.

RAID in VPS Servers

All VPS server accounts which we offer are generated on physical servers which employ SSD drives working in RAID. At least 1 drive is employed for parity - one additional bit is added to the info copied on it and if a main disk stops working, this bit makes it much simpler to recalculate the bits of the files on the failed drive so that the right information is restored on the new drive added to the RAID. At the same time, your Internet sites will stay online because all the info will still load from at least 1 more drive. If you add regular backups to your VPS plan, a copy of your info will be kept on standard hard disks that also work in RAID since we want to make sure that any kind of site content you add will be protected all the time. Employing multiple hard disks in RAID for all main and backup servers permits us to offer fast and reliable hosting service.