Redundant Array of Independent Disks, or RAID, is a method of storing content on multiple hard disks simultaneously. A RAID might be software or hardware based on the HDDs which are used - physical or logical ones, still what’s common between them is that they all operate as one single unit where your information is stored. The top advantage of employing a RAID is redundancy since the info on all the drives is the same at all times, so even if one of the drives fails for some reason, the info will still be available on the remaining drives. The general performance will also improve because the reading and writing processes will be split between various drives, so a single one will not be overloaded. There're different sorts of RAIDs where the capabilities and fault tolerance could differ according to the exact setup - whether info is written on all the drives in real time or it's written on a single drive and after that mirrored on another, the number of drives are used for the RAID, etc.
RAID in Cloud Website Hosting
Our cutting-edge cloud Internet hosting platform where all cloud website hosting accounts are generated employs quick SSD drives as opposed to the standard HDDs, and they work in RAID-Z. With this configuration, several hard drives work together and at least 1 is a dedicated parity disk. Basically, when data is written on the rest of the drives, it's duplicated on the parity one adding an extra bit. This is performed for redundancy as even in case a drive fails or falls out of the RAID for some reason, the information can be rebuilt and verified thanks to the parity disk and the data stored on the other ones, therefore not a single thing will be lost and there will be no service disturbances. This is another level of protection for your data in addition to the revolutionary ZFS file system which uses checksums to guarantee that all of the data on our servers is undamaged and is not silently corrupted.
RAID in Semi-dedicated Servers
The RAID type which we employ for the cloud hosting platform where your semi-dedicated server account will be created is called RAID-Z. What's different about it is that at least one of the disks is employed as a parity drive. In simple terms, whenever any data is duplicated on this special disk drive, one more bit is included to it and in case a faulty disk is changed, the info that will be cloned on it is a combination of the data on the other disk drives in the RAID and that on the parity one. It's done this way to guarantee that your info is intact. During this process, your websites will be functioning normally because RAID-Z makes it possible for a whole drive to fail without causing any service disturbances and it simply uses one of the other ones as the main production drive. Using RAID-Z together with the ZFS file system which uses checksums to guarantee that no data can get silently corrupted on our servers, you'll never need to worry about the integrity of your files.
RAID in VPS Servers
All VPS server accounts which we provide are generated on physical servers that employ SSD drives operating in RAID. At least one drive is employed for parity - one additional bit is added to the data duplicated on it and if a main disk stops working, this bit makes it easier to recalculate the bits of the files on the damaged hard disk so that the correct data is recovered on the new drive included in the RAID. At the same time, your Internet sites will stay online because all the data will still load from at least one other hard disk. If you add regular backups to your VPS plan, a copy of the information will be saved on standard hard drives that also operate in RAID as we want to make certain that any kind of website content you upload will be risk-free all of the time. Working with multiple drives in RAID for all the main and backup servers permits us to offer fast and reliable Internet hosting service.