RAID, which is an acronym of Redundant Array of Independent Disks, is a software or hardware storage virtualization technology which makes it possible for a system to use several hard drives as one single logical unit. To put it differently, all drives are used as one and the data on all of them is identical. Such a configuration has 2 key advantages over using a single drive to save data - the first one is redundancy, so in case one drive doesn't work, the information will be accessible from the others, and the second is improved performance since the input/output, or reading/writing operations will be spread among multiple drives. You can find different RAID types in accordance with what number of drives are used, whether reading and writing are both handled from all drives concurrently, whether data is written in blocks on one drive after another or is mirrored between drives in the same time, and so on. Depending on the exact setup, the error tolerance and the performance vary.

RAID in Cloud Web Hosting

All the content that you upload to your new cloud web hosting account will be stored on quick SSD drives which operate in RAID-Z. This setup is built to use the ZFS file system which runs on our cloud hosting platform and it adds one more level of protection for your site content on top of the real-time checksum verification that ZFS uses to guarantee the integrity of the data. With RAID-Z, the information is saved on a number of disks and at least one is a parity disk - whenever data is written on it, an additional bit is added, so in the event that any drive stops functioning for some reason, the integrity of the information 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 functioning of our system will not be interrupted and it will continue working efficiently until the problematic drive is changed and the info is synced on it.

RAID in Semi-dedicated Servers

If you host your sites in a semi-dedicated server account from our firm, all of the content which you upload will be saved on SSD drives which operate in RAID-Z. With this form of RAID, at least 1 of the hard disks is employed for parity - when data is synchronized between the disks, an additional bit is added to it on the parity one. The reasoning behind this is to guarantee the integrity of the data that is cloned to a new drive in the event that one of the drives in the RAID stops working because the content being copied on the brand new disk is recalculated from the info on the standard hard drives and on the parity one. Another advantage of RAID-Z is the fact that even in case a disk drive fails, the system could switch to a different one promptly without service disruptions of any kind. RAID-Z adds an additional level of safety for the content which you upload on our cloud hosting platform along with the ZFS file system which uses unique checksums so as to authenticate the integrity of every single file.

RAID in VPS Servers

In case you use one of our VPS server packages, any content that you upload will be saved on SSD drives that work in RAID. At least one drive is used for parity to guarantee the integrity of your info. In simple terms, this is a special drive where info is copied with one bit added to it. In the event that a disk in the RAID breaks down, your sites will continue working and when a new disk replaces the flawed one, the bits of the information that will be cloned on it are calculated using the healthy and the parity drives. This way, any chance of corrupting data during the process is avoided. We also use conventional hard disk drives which operate in RAID for storing backup copies, so in case you include this service to your VPS package, your content will be stored on multiple drives and you will never have to worry about its integrity even in the event of multiple drive breakdowns.