Redundant Array of Independent Disks, or RAID, is a method of keeping content on several hard disks at the same time. A RAID can be software or hardware based on the HDDs which are used - physical or logical ones, but what is common between them is that they all operate as one single unit where data is stored. The key advantage of using a RAID is redundancy because the information on all of the drives shall be identical all of the time, so even in the event that some drive fails for some reason, the info will still be available on the rest of the drives. The overall performance is also enhanced since the reading and writing processes could be split between multiple drives, so a single one can't be overloaded. There are different sorts of RAIDs where the functionality and fault tolerance may differ according to the specific setup - whether information is written on all of the drives real-time or it's written on one drive and afterwards mirrored on another, what amount of drives are used for the RAID, etc.

RAID in Website Hosting

Our advanced cloud Internet hosting platform where all website hosting accounts are generated uses fast SSD drives rather than the traditional HDDs, and they work in RAID-Z. With this setup, several hard drives function together and at least a single one is a dedicated parity disk. Simply put, when data is written on the rest of the drives, it's cloned on the parity one adding an extra bit. This is performed for redundancy as even if some drive fails or falls out of the RAID for some reason, the info can be rebuilt and verified thanks to the parity disk and the data saved on the other ones, so absolutely nothing will be lost and there will be no service interruptions. This is one more level of protection for your info along with the revolutionary ZFS file system that uses checksums to guarantee that all the data on our servers is intact and is not silently corrupted.

RAID in Semi-dedicated Servers

The information uploaded to any semi-dedicated server account is kept on SSD drives which function in RAID-Z. One of the drives in this kind of a setup is used for parity - whenever data is copied on it, an extra bit is added. If a disk happens to be problematic, it will be removed from the RAID without disturbing the work of the sites because the data will load from the remaining drives, and when a brand new drive is added, the info that will be copied on it will be a mix between the information on the parity disk and data saved on the other drives in the RAID. This is done to guarantee that the info that is being cloned is correct, so once the new drive is rebuilt, it could be incorporated into the RAID as a production one. This is an additional warranty for the integrity of your data as the ZFS file system which runs on our cloud Internet hosting platform analyzes a special checksum of all the copies of the files on the separate drives in order to avoid any possibility of silent data corruption.

RAID in VPS Servers

All VPS server accounts which our company provides are created on physical servers that take advantage of SSD drives working in RAID. At least one drive is employed for parity - one additional bit is added to the info duplicated on it and if a main disk fails, this bit makes it simpler to recalculate the bits of the files on the damaged disk drive so that the accurate information is restored on the new drive added to the RAID. At the same time, your sites will stay online since all the info will still load from at least 1 more hard drive. In the event that you add routine backups to your VPS package, a copy of the data will be saved on standard hard disks that also function in RAID because we want to make sure that any sort of site content you upload will be safe and sound all the time. Using multiple drives in RAID for all main and backup servers allows us to offer fast and reliable web hosting service.