RAID

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RAID, or Redundant Array of Independent Disks, is a technology for keeping data on several hard disks that function together as one single logical unit. The drives can be physical or logical i.e. in the aforementioned case one single drive is split into individual ones using virtualization software. Either way, the very same information is saved on all drives and the main advantage of employing this type of a setup is that in case a drive fails, the data will still be available on the other ones. Having a RAID also enhances the performance because the input and output operations will be spread among a few drives. There are several kinds of RAID based on how many drives are used, whether writing is performed on all the drives in real time or just on one, and how the information is synchronized between the hard drives - whether it is written in blocks on one drive after another or all of it is mirrored from one on the others. All of these factors indicate that the error tolerance as well as the performance between the various RAID types may vary.

RAID in Web Hosting

The NVMe drives which our cutting-edge cloud web hosting platform uses for storage operate in RAID-Z. This kind of RAID is developed to work with the ZFS file system which runs on the platform and it employs the so-called parity disk - a special drive where information stored on the other drives is copied with an extra bit added to it. In the event that one of the disks stops functioning, your Internet sites will continue working from the other ones and as soon as we replace the faulty one, the info which will be copied on it will be recovered from what is stored on the other drives together with the info from the parity disk. This is performed so as to be able to recalculate the elements of each file properly and to verify the integrity of the data duplicated on the new drive. This is one more level of security for the information you upload to your web hosting account along with the ZFS file system which analyzes a special digital fingerprint for each and every file on all of the drives in real time.

RAID in Semi-dedicated Servers

The NVMe drives which are used for saving any website content uploaded to the semi-dedicated server accounts which we provide operate in RAID-Z. This is a specific configuration where one or more disk drives are used for parity i.e. the system will add an extra bit to any data duplicated on this kind of a drive. In case that a disk fails and is substituted with a new one, what info will be duplicated on the latter will be a combination calculated between the data on the other hard disks and that on the parity one. This is done to guarantee that the info on the new drive shall be accurate. Throughout the process, the RAID will continue operating adequately and the malfunctioning drive won't affect the adequate operation of your Internet sites in any way. Using NVMes in RAID-Z is a superb addition to the ZFS file system which runs on our advanced cloud platform with regards to preserving the integrity of your files since ZFS uses specific digital identifiers referred to as checksums to prevent silent data corruption.

RAID in VPS Servers

All VPS server accounts which we provide are created on physical servers that take advantage of NVMe drives functioning in RAID. At least one drive is used for parity - one additional bit is added to the information copied on it and if a main disk fails, this bit makes it simpler to recalculate the bits of the files on the failed drive so that the correct information is recovered on the new drive included in the RAID. In the mean time, your sites will still be online since all the information will still load from at least 1 other hard drive. In the event that you add regular backups to your VPS plan, a copy of your info will be saved on standard hard disks which also operate in RAID since we want to make certain that any sort of website content you add will be risk-free all the time. Using multiple hard disks in RAID for all main and backup servers enables us to offer fast and reliable web hosting service.