RAID, which stands short for Redundant Array of Independent Disks, is a software or hardware storage virtualization technology that permits a system to take advantage of several hard drives as a single logical unit. To put it differently, all the drives are used as one and the information on all of them is identical. Such a setup has two major advantages over using a single drive to keep data - the first is redundancy, so if one drive doesn't work, the information will be accessible from the others, and the second one is better performance as the input/output, or reading/writing operations will be spread among different drives. There're different RAID types based on the number of drives are employed, whether reading and writing are both done from all drives concurrently, if data is written in blocks on one drive after another or is mirrored between drives in the same time, etcetera. Determined by the exact setup, the fault tolerance and the performance could differ.

RAID in Web Hosting

All of the content that you upload to your new web hosting account will be held on fast SSD drives which function in RAID-Z. This configuration is built to employ the ZFS file system which runs on our cloud web hosting platform and it adds one more level of security for your site content in addition to the real-time checksum verification which ZFS uses to ensure the integrity of the data. With RAID-Z, the data is saved on a number of disks and at least 1 is a parity disk - whenever data is written on it, an additional bit is added, so if any drive stops working for whatever reason, the stability of the data can be verified by recalculating its bits in accordance with what is kept on the production disks and on the parity one. With RAID-Z, the functioning of our system will never be interrupted and it will continue functioning smoothly until the faulty drive is changed and the data is synced on it.

RAID in Semi-dedicated Hosting

The SSD drives which are used for holding any website content uploaded to the semi-dedicated hosting accounts which we provide function in RAID-Z. This is a specific configuration where one or more 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. In case that a disk fails and is replaced with a new one, what info will be cloned on the latter will be a combination calculated between the data on the remaining drives and that on the parity one. This is done to ensure that the info on the new drive will be accurate. During the procedure, the RAID will continue functioning normally and the malfunctioning drive won't impact the normal operation of your websites in any way. Using SSDs in RAID-Z is an amazing addition to the ZFS file system that runs on our state-of-the-art cloud platform with regards to preserving the integrity of your files because ZFS uses unique digital identifiers known as checksums so as to avoid silent data corruption.

RAID in VPS Web Hosting

In case you employ one of our virtual private server packages, any content which you upload will be stored on SSD drives that work in RAID. At least a single drive is employed for parity to ensure the integrity of your data. In simple terms, this is a special drive where data is copied with one bit added to it. In the event that a disk in the RAID stops functioning, your websites will continue working and when a new disk replaces the faulty one, the bits of the information that will be duplicated on it are calculated by using the healthy and the parity drives. That way, any chance of corrupting data during the process is avoided. We also use conventional hard disk drives that work in RAID for storing backups, so if you include this service to your VPS plan, your site content will be saved on multiple drives and you'll never have to worry about its integrity even in the event of multiple drive breakdowns.

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