RAID, which stands short for Redundant Array of Independent Disks, is a software or hardware storage virtualization technology that enables a system to take advantage of multiple hard drives as one single logical unit. In other words, all the drives are used as one and the info on all of them is the same. This kind of a setup has 2 key advantages over using just a single drive to save data - the first one is redundancy, so if one drive doesn't work, the data will be accessed from the others, and the second is better performance as the input/output, or reading/writing operations will be spread among different drives. You can find different RAID types depending on the number of drives are used, whether reading and writing are both performed from all drives concurrently, if data is written in blocks on one drive after another or is mirrored between drives in the same time, and so on. Determined by the particular setup, the fault tolerance and the performance may vary.
RAID in Cloud Hosting
All content that you upload to your new cloud hosting account will be placed on fast SSD drives which work in RAID-Z. This configuration is built to use the ZFS file system which runs on our cloud hosting platform and it adds an additional level of protection for your site content on top of the real-time checksum authentication which ZFS uses to guarantee the integrity of the data. With RAID-Z, the information is stored on a couple of disks and at least one of them is a parity disk - whenever data is written on it, an extra bit is added, so in case any drive stops working for some reason, the stability of the info can be verified by recalculating its bits in accordance with what is kept on the production hard disks and on the parity one. With RAID-Z, the operation of our system will not be interrupted and it will continue functioning efficiently until the malfunctioning drive is replaced and the info is synced on it.
RAID in Semi-dedicated Hosting
The SSD drives that are used for saving any website content uploaded to the semi-dedicated hosting 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 copied on this kind of a disk drive. If a disk fails and is replaced with another one, what data will be duplicated on the latter will be a combination calculated between the data on the remaining disks and that on the parity one. This is done to guarantee that the data on the new drive shall be correct. Throughout the process, the RAID will continue functioning adequately and the malfunctioning drive won't impact the normal operation of your websites in any way. Working with SSDs in RAID-Z is an amazing addition to the ZFS file system which runs on our top-notch cloud platform with regards to preserving the integrity of your files as ZFS uses special digital identifiers named checksums so as to prevent silent data corruption.
RAID in VPS Web Hosting
All virtual private server accounts that our company offers are created on physical servers that employ SSD drives operating in RAID. At least 1 drive is employed for parity - one extra bit is added to the information copied on it and in case a main disk fails, this bit makes it simpler to recalculate the bits of the files on the damaged drive so that the correct data is restored on the new drive included in the RAID. In the mean time, your Internet sites will still be online as all the data will still load from at least one more hard drive. In the event that you add regular backups to your VPS plan, a copy of your data will be stored on standard hard drives that also operate in RAID as we would like to make certain that any type of site content you upload will be risk-free at all times. Working with multiple hard drives in RAID for all of the main and backup servers enables us to offer fast and reliable web hosting service.