RAID, which stands short for Redundant Array of Independent Disks, is a software or hardware storage virtualization technology that makes it possible for a system to employ several hard drives as one single logical unit. In other words, all the drives are used as one and the information on all of them is identical. This type of a configuration has 2 key advantages over using a single drive to save data - the first one is redundancy, so in case one drive stops working, the info will be accessed from the remaining ones, and the second one is better performance as the input/output, or reading/writing operations will be spread among several drives. There're different RAID types in accordance with the number of drives are used, whether reading and writing are both performed from all of the drives concurrently, if data is written in blocks on one drive after another or is mirrored between drives in the same time, and many others. Depending on the particular setup, the error tolerance and the performance may vary.

RAID in Hosting

The SSD drives that our cutting-edge cloud web hosting platform uses for storage work in RAID-Z. This sort of RAID is created to work with the ZFS file system which runs on the platform and it uses the so-called parity disk - a specific drive where data stored on the other drives is duplicated with an additional bit added to it. In the event that one of the disks stops working, your websites shall continue working from the other ones and as soon as we replace the problematic one, the data which will be duplicated on it will be rebuilt from what is stored on the rest of the drives together with the data from the parity disk. This is done in order to be able to recalculate the bits of every single file properly and to authenticate the integrity of the information copied on the new drive. This is one more level of security for the info you upload to your hosting account in addition to the ZFS file system that analyzes a unique digital fingerprint for each and every file on all the drives in real time.

RAID in Semi-dedicated Servers

The RAID type which we use for the cloud web hosting platform where your semi-dedicated server account shall be created is known as RAID-Z. What's different about it is that at least one of the disks is used as a parity drive. Simply put, whenever any data is duplicated on this particular drive, one more bit is included to it and in case a defective disk is changed, the data which will be duplicated on it is a combination of the data on the other disk drives in the RAID and that on the parity one. We do this to make sure that your info is intact. Throughout this process, your Internet sites will be working normally since RAID-Z enables a whole drive to fail without any service interruptions and it simply works by using one of the remaining ones as the main production drive. Employing RAID-Z together with the ZFS file system that uses checksums to guarantee that no data shall get silently corrupted on our servers, you won't need to worry about the integrity of your files.

RAID in VPS Servers

The physical servers where we generate VPS server employ extremely fast SSD drives which will increase the speed of your Internet sites considerably. The hard disks operate in RAID to guarantee that you won't lose any data because of a power loss or a hardware malfunction. The production servers take advantage of a variety of drives where the info is kept and one disk is used for parity i.e. one bit is added to all of the info copied on it, that makes it much easier to recover the site content without loss in case a main drive stops working. If you pick our backup service, your data will be kept on an individual machine that uses standard hard-disk drives and although there's no parity one in this case, they are also in a RAID to ensure that we will have a backup of your website content all of the time. With this kind of setup your info will always be safe as it will be available on several disk drives.