RAID, which stands short for Redundant Array of Independent Disks, is a software or hardware storage virtualization technology which allows a system to take advantage of many hard drives as one single logical unit. In other words, all drives are used as one and the info on all of them is identical. This kind of a configuration has 2 key advantages over using just a single drive to keep data - the first is redundancy, so if one drive stops working, the data will be accessed from the remaining ones, and the second one is improved performance since the input/output, or reading/writing operations will be distributed among different drives. There're different RAID types depending on what amount of drives are employed, if reading and writing are both performed from all of the drives simultaneously, whether data is written in blocks on one drive after another or is mirrored between drives in the same time, etc. Depending on the exact setup, the error tolerance and the performance may vary.

RAID in Web Hosting

All the content which you upload to your new web hosting account will be held on quick SSD drives which work in RAID-Z. This configuration is built to work with the ZFS file system which runs on our cloud Internet hosting platform and it adds another level of security for your content on top of the real-time checksum verification which ZFS uses to guarantee the integrity of the data. With RAID-Z, the information is saved on several disks and at least one of them is a parity disk - whenever info is written on it, an additional bit is added, so in case any drive stops working for whatever reason, the integrity of the info can be verified by recalculating its bits based on what is stored on the production hard drives and on the parity one. With RAID-Z, the functioning of our system will not be interrupted and it will continue working flawlessly until the malfunctioning drive is changed and the information is synced on it.

RAID in Semi-dedicated Hosting

If you host your sites in a semi-dedicated hosting account from our firm, any content you upload will be saved on SSD drives which work in RAID-Z. With this form of RAID, at least one of the hard disks is used for parity - when data is synced between the disks, an extra bit is included in it on the parity one. The purpose behind this is to guarantee the integrity of the data that is copied to a brand new drive in case one of the disks in the RAID stops functioning because the website content being copied on the brand new disk is recalculated from the data on the standard disk drives and on the parity one. An additional advantage of RAID-Z is the fact that even in the event that a disk drive stops functioning, the system can switch to another one instantly without service disruptions of any sort. RAID-Z adds an extra level of safety for the content which you upload on our cloud hosting platform along with the ZFS file system which uses unique checksums as a way to verify the integrity of every single file.

RAID in VPS Web Hosting

The SSD drives which we use on the physical machines where we generate virtual private servers function in RAID to ensure that any content you upload will be available and intact at all times. At least 1 drive is used for parity - one bit of info is added to any data copied on it. In the event that a main drive stops working, it is changed and the data that will be cloned on it is calculated between the rest of the drives and the parity one. It's done this way to make sure that the needed data is copied and that not a single file is corrupted because the new drive will be incorporated into the RAID afterwards. We also use hard disk drives operating in RAID on the backup servers, so if you add this upgrade to your VPS plan, you shall use an even more reliable hosting service since your content will be available on multiple drives irrespective of any type of unexpected hardware failure.