Redundant Array of Independent Disks, or RAID, is a method of saving content on several hard disks at the same time. A RAID could be software or hardware depending on the HDDs which are used - physical or logical ones, still what is common between them is that they all function as a single unit where your information is stored. The top advantage of employing a RAID is redundancy as the info on all of the drives is exactly the same all of 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 since the reading and writing processes will be split between a number of drives, so a single one will not be overloaded. There are different kinds of RAIDs where the efficiency and fault tolerance may differ according to the specific setup - whether your data is written on all drives in real time or it is written on one drive and afterwards mirrored on another, the number of drives are used for the RAID, and many others.

RAID in Cloud Website Hosting

The SSD drives which our cutting-edge cloud hosting platform uses for storage operate in RAID-Z. This kind of RAID is created to work with the ZFS file system which runs on the platform and it takes advantage of the so-called parity disk - a specific drive where info located on the other drives is copied with an additional bit added to it. In case one of the disks stops working, your websites shall continue working from the other ones and after we replace the malfunctioning one, the data that will be copied on it will be recovered from what is stored on the other drives together with the data from the parity disk. This is performed in order to be able to recalculate the bits of each file adequately and to authenticate the integrity of the info duplicated on the new drive. This is one more level of security for the information you upload to your cloud website hosting account together with the ZFS file system which analyzes a special digital fingerprint for every single file on all the hard drives in real time.

RAID in Semi-dedicated Hosting

The information uploaded to any semi-dedicated hosting account is saved on SSD drives which operate in RAID-Z. One of the drives in this kind of a configuration is used for parity - whenever data is copied on it, an extra bit is added. In case a disk happens to be flawed, it will be removed from the RAID without disturbing the functioning of the Internet sites since the data will load from the rest of the drives, and when a brand new drive is added, the information which will be copied on it will be a blend between the information on the parity disk and data saved on the other drives in the RAID. This is done to guarantee that the information that is being cloned is correct, so as soon as the new drive is rebuilt, it could be included in the RAID as a production one. This is one more guarantee for the integrity of your information as the ZFS file system that runs on our cloud web hosting platform analyzes a special checksum of all copies of your files on the different drives so as to avoid any possibility of silent data corruption.

RAID in VPS

The SSD drives which we use on the machines where we create virtual private servers operate in RAID to make sure that any content which you upload will be available and intact at all times. At least 1 drive is employed for parity - one bit of info is added to any data copied on it. In the event that a main drive breaks down, it is replaced and the data which will be duplicated on it is calculated between the rest of the drives and the parity one. That’s done to make sure that the right information is copied and that no file is corrupted since the new drive will be a part of the RAID afterwards. In addition, we use hard drives working in RAID on the backup servers, so in the event that you add this upgrade to your VPS plan, you will use an even more reliable hosting service as your content will be available on multiple drives regardless of any unforeseen hardware malfunction.