Redundant Array of Independent Disks, or RAID, is a method of saving content on several hard disk drives simultaneously. A RAID might be software or hardware based on the HDDs that are used - physical or logical ones, however what’s common between them is the fact that they all work as just a single unit where information is saved. The top advantage of using a RAID is redundancy because the data on all drives is identical all the time, so even if a drive fails for some reason, the information will still be available on the other drives. The general performance will also improve since the reading and writing processes can be split between various drives, so a single one won't be overloaded. There are different types of RAIDs where the performance and fault tolerance may differ depending on the specific setup - whether information is written on all the drives in real time or it is written on a single drive and then mirrored on another, what amount of drives are used for the RAID, etcetera.

RAID in Cloud Hosting

The disk drives which we employ for storage with our outstanding cloud Internet hosting platform are not the classic HDDs, but high-speed solid-state drives (SSD). They operate in RAID-Z - a special setup intended for the ZFS file system which we employ. All the content that you upload to the cloud hosting account will be stored on multiple drives and at least 1 will be employed as a parity disk. This is a special drive where an extra bit is added to any content copied on it. If a disk in the RAID fails, it will be changed without any service interruptions and the data will be rebuilt on the new drive by recalculating its bits using the data on the parity disk along with that on the other disks. This is done in order to ensure the integrity of the data and along with the real-time checksum authentication which the ZFS file system performs on all drives, you won't ever have to worry about losing any information no matter what.

RAID in Semi-dedicated Servers

The SSD drives that are used for keeping any site content uploaded to the semi-dedicated server accounts which we provide work in RAID-Z. This is a specific setup where one or more hard drives are employed for parity i.e. the system will add an additional bit to any data duplicated on this kind of a disk drive. In the event that a disk fails and is replaced with a new one, what data will be cloned on the latter shall be a mix calculated between the data on the other drives and that on the parity one. This is done to ensure that the data on the new drive shall be correct. During the process, the RAID will continue working normally and the malfunctioning drive will not affect the proper operation of your Internet sites at all. Using SSDs in RAID-Z is an impressive addition to the ZFS file system that runs on our top-notch cloud platform with regards to preserving the integrity of your files since ZFS uses specific digital identifiers referred to as checksums so as to prevent silent data corruption.

RAID in VPS Servers

All VPS server accounts which our company offers are generated on physical servers which take advantage of SSD drives working in RAID. At least one drive is used for parity - one additional bit is added to the information duplicated on it and in case a main disk stops working, this bit makes it simpler to recalculate the bits of the files on the failed hard disk so that the right information is restored on the new drive included in the RAID. At the same time, your websites will stay online since all the information will still load from at least 1 more drive. In case you add regular backups to your VPS plan, a copy of the information will be stored on standard disk drives that also work in RAID as we would like to make sure that any website content you add will be risk-free all of the time. Working with multiple drives in RAID for all of the main and backup servers enables us to offer fast and reliable Internet hosting service.