Redundant Array of Independent Disks, or RAID, is a method of storing content on several hard drives at the same time. A RAID can be software or hardware based on the drives that are used - physical or logical ones, yet what’s common between them is that they all perform as just one single unit where your information is kept. The top advantage of employing a RAID is redundancy because the data on all drives will be exactly the same all the time, so even if one of the drives fails for some reason, the information will still be available on the other drives. The general performance is enhanced as well because the reading and writing processes will be split between a number of drives, so a single one can't be overloaded. There're different types of RAIDs where the effectiveness and fault tolerance may differ according to the specific setup - whether information is written on all drives in real time or it is written on one drive and then mirrored on another, the number of drives are used for the RAID, etc.

RAID in Cloud Hosting

The SSD drives that our cutting-edge cloud web hosting platform uses for storage work in RAID-Z. This kind of RAID is designed to work with the ZFS file system which runs on the platform and it works by using the so-called parity disk - a special drive where info stored on the other drives is copied with an extra bit added to it. If one of the disks stops functioning, your Internet sites will continue working from the other ones and once we replace the bad one, the info that will be duplicated on it will be rebuilt from what is stored on the rest of the drives together with the information from the parity disk. This is done in order to be able to recalculate the elements of each and every file correctly and to authenticate the integrity of the data cloned on the new drive. This is an additional level of security for the information you upload to your cloud hosting account together with the ZFS file system that analyzes a unique digital fingerprint for each file on all of the disk drives in real time.

RAID in Semi-dedicated Servers

If you host your sites in a semi-dedicated server account from our firm, all the content which you upload will be stored on SSD drives which work in RAID-Z. With this form of RAID, at least one of the disks is used for parity - when data is synchronized between the hard drives, an additional bit is added to it on the parity one. The reasoning behind this is to ensure the integrity of the data that is duplicated to a brand new drive in case one of the disks in the RAID stops functioning as the website content being copied on the new disk is recalculated from the info on the standard hard drives and on the parity one. Another advantage of RAID-Z is that even in case a disk drive stops working, the system could switch to a different one immediately without service disturbances of any sort. RAID-Z adds one more level of safety for the content you upload on our cloud hosting platform along with the ZFS file system that uses unique checksums so as to verify the integrity of every single file.

RAID in VPS Servers

The SSD drives that we use on the machines where we set up VPS servers function in RAID to make sure that any content which you upload will be available and intact all of the time. At least 1 drive is employed for parity - one bit of info is added to any data copied on it. In case a main drive fails, it is replaced and the info which will be duplicated on it is calculated between the remaining drives and the parity one. This is done to ensure that the right data is copied and that no file is corrupted as the new drive will be a part of the RAID afterwards. Also, we use hard drives functioning in RAID on the backup servers, so in case you add this upgrade to your VPS plan, you shall use an even more reliable hosting service as your content will be available on multiple drives regardless of any unpredicted hardware malfunction.