Redundant Array of Independent Disks, or RAID, is a method of storing content on a number of hard disks simultaneously. A RAID can be software or hardware depending on the HDDs that are used - physical or logical ones, still what’s common between them is the fact that they all operate as just a single unit where your information is stored. The key advantage of using a RAID is redundancy as the data on all of the drives is the same all of the time, so even if some drive fails for some reason, the information will still be available on the other drives. The overall performance is enhanced as well because the reading and writing processes can be split between a number of drives, so a single one will not be overloaded. There are different kinds of RAIDs where the effectiveness and fault tolerance could differ depending on the specific setup - whether your data is written on all the drives real-time or it's written on a single drive and then mirrored on another, the number of drives are used for the RAID, and many others.
RAID in Website Hosting
The advanced cloud Internet hosting platform where all website hosting accounts are created uses quick SSD drives instead of the traditional HDDs, and they function in RAID-Z. With this setup, numerous hard disks work together and at least one is a dedicated parity disk. Basically, when data is written on the other drives, it's cloned on the parity one adding an extra bit. This is done for redundancy as even in case a drive fails or falls out of the RAID for some reason, the data can be rebuilt and verified thanks to the parity disk and the data recorded on the other ones, therefore practically nothing will be lost and there will be no service interruptions. This is another level of security for your info along with the advanced ZFS file system that uses checksums to guarantee that all of the data on our servers is intact and is not silently corrupted.
RAID in Semi-dedicated Servers
The RAID type which we use for the cloud Internet 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. Put simply, whenever any data is cloned on this particular hard drive, one more bit is added to it and in the event that a faulty disk is replaced, the info that will be duplicated on it is a combination of the data on the remaining hard drives in the RAID and that on the parity one. It's done this way to make sure that the data is intact. Throughout this process, your Internet sites will be working normally since RAID-Z allows for a whole drive to fail without any service disturbances 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 will get silently corrupted on our servers, you will never have to worry about the integrity of your files.
RAID in VPS Servers
All VPS server accounts which our company offers are created on physical servers which employ SSD drives operating in RAID. At least 1 drive is used for parity - one additional bit is added to the info copied on it and if a main disk breaks down, this bit makes it simpler to recalculate the bits of the files on the failed hard disk so that the correct information is recovered on the new drive included in the RAID. At the same time, your Internet sites will stay online as all the data will still load from at least one more drive. If you add regular backups to your VPS plan, a copy of your information will be kept on standard disk drives that also operate in RAID as we would like to make sure that any sort of content you upload will be risk-free all of the time. Working with multiple hard disks in RAID for all the main and backup servers permits us to offer fast and reliable hosting service.