Redundant Array of Independent Disks, or RAID, is a way of keeping content on multiple hard disks at the same time. A RAID could be software or hardware depending on the HDDs that are used - physical or logical ones, yet what’s common between them is the fact that they all perform as just one single unit where data is stored. The key advantage of using a RAID is redundancy because the information on all of the drives is exactly the same at all times, so even in the event that a drive fails for some reason, the info will still be available on the rest of the drives. The general performance is also enhanced since the reading and writing processes will be split between a number of drives, so a single one will not be overloaded. There're different kinds of RAIDs where the efficiency and fault tolerance may differ depending on the exact setup - whether info is written on all the drives real-time or it's written on one drive and after that mirrored on another, what amount of drives are used for the RAID, and many others.

RAID in Cloud Hosting

All of the content that you upload to your new cloud hosting account will be stored on quick SSD drives that operate in RAID-Z. This setup is built to work with the ZFS file system that runs on our cloud Internet hosting platform and it adds another level of security for your content in addition to the real-time checksum verification which ZFS uses to ensure the integrity of the data. With RAID-Z, the info is saved on a couple of disks and at least one of them is a parity disk - whenever data is recorded on it, an additional bit is added, so if any drive stops functioning for whatever reason, the integrity of the info can be verified by recalculating its bits based on what is saved on the production drives and on the parity one. With RAID-Z, the operation of our system will not be interrupted and it will continue working smoothly until the malfunctioning drive is changed and the data is synchronized on it.

RAID in Semi-dedicated Servers

The RAID type that we employ for the cloud web hosting platform where your semi-dedicated server account will be created is called RAID-Z. What is different about it is that at least 1 of the disks is employed as a parity drive. Simply put, whenever any kind of data is duplicated on this particular hard 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 guarantee that your information is intact. During this process, your Internet sites will be functioning normally because RAID-Z allows for a whole drive to fail without causing any service interruptions and it simply uses one of the other ones as the main production drive. Employing RAID-Z together with the ZFS file system that uses checksums to warrant that no data shall get silently corrupted on our servers, you won't ever need to worry about the integrity of your files.

RAID in VPS Servers

The SSD drives that we use on the physical machines where we create VPS servers operate in RAID to make sure that any content that you upload will be available and intact at all times. At least a single drive is employed for parity - one bit of data is added to any data copied on it. If a main drive breaks down, it is replaced and the information that will be copied on it is calculated between the other drives and the parity one. It's done this way to make sure that the right info is copied and that no file is corrupted because the new drive will be used in the RAID afterwards. In addition, 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 Internet hosting service because your content will be available on multiple drives regardless of any unforeseen hardware malfunction.