RAID, which stands short for Redundant Array of Independent Disks, is a software or hardware storage virtualization technology that enables a system to use a number of hard drives as one single logical unit. Put simply, all drives are used as one and the information on all of them is identical. This type of a configuration has 2 major advantages over using just a single drive to keep data - the first one is redundancy, so in case one drive stops working, the information will be accessed from the others, and the second one is improved performance because the input/output, or reading/writing operations will be distributed among a number of drives. There are different RAID types depending on what number of drives are used, if reading and writing are both done from all drives simultaneously, if data is written in blocks on one drive after another or is mirrored between drives in the same time, etc. Depending on the particular setup, the error tolerance and the performance may vary.
RAID in Cloud Hosting
All of the content which you upload to your new cloud hosting account will be placed on quick SSD drives that operate in RAID-Z. This setup is built to employ the ZFS file system that runs on our cloud web hosting platform and it adds another 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 data is stored on a number of disks and at least one of them is a parity disk - whenever info is recorded on it, an extra bit is added, so in the event that any drive stops working for some reason, the stability of the info can be verified by recalculating its bits in accordance with what is saved 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 efficiently until the problematic drive is replaced and the data is synchronized on it.
RAID in Semi-dedicated Servers
The SSD drives that are used for saving any site content uploaded to the semi-dedicated server accounts which we provide function in RAID-Z. This is a specific setup where one or more drives are used for parity i.e. the system will include an extra bit to any data cloned on this type of a drive. In the event that a disk fails and is replaced with a new one, what info will be duplicated on the latter will be a combination calculated between the data on the remaining hard disks and that on the parity one. This is done to make sure that the information on the new drive will be accurate. Throughout the procedure, the RAID will continue working adequately and the malfunctioning drive won't impact the proper operation of your Internet sites at all. Using SSDs in RAID-Z is a great addition to the ZFS file system which runs on our revolutionary cloud platform with regard to preserving the integrity of your files because ZFS uses unique digital identifiers named checksums so as to prevent silent data corruption.
RAID in VPS Servers
All VPS server accounts that we offer are made on physical servers that take advantage of SSD drives working in RAID. At least 1 drive is employed for parity - one additional bit is included in the information cloned on it and in case a main disk fails, this bit makes it simpler to recalculate the bits of the files on the failed hard disk so that the right information is restored on the new drive added to the RAID. In the mean time, your Internet sites will remain online as all the data will still load from at least 1 other hard disk. If you add regular backups to your VPS plan, a copy of your information will be kept on standard hard drives which also operate in RAID as we want to make sure that any type of website content you upload will be risk-free all the time. Using multiple hard disks in RAID for all the main and backup servers enables us to offer fast and reliable Internet hosting service.