RAID, which stands short for Redundant Array of Independent Disks, is a software or hardware storage virtualization technology which makes it possible for a system to employ multiple hard drives as a single logical unit. To put it differently, all of the drives are used as one and the information on all of them is identical. This kind of a configuration has two huge advantages over using just a single drive to save data - the first one is redundancy, so in the event that one drive breaks down, the information will be accessed through the others, and the second one is better performance because the input/output, or reading/writing operations will be spread among several drives. You can find different RAID types depending on what number of drives are used, whether reading and writing are both performed from all of the drives at the same time, whether data is written in blocks on one drive after another or is mirrored between drives in the same time, and so on. Depending on the exact setup, the fault tolerance and the performance may differ.

RAID in Shared Hosting

The SSD drives that our cutting-edge cloud Internet hosting platform uses for storage operate in RAID-Z. This kind of RAID is designed to work with the ZFS file system that runs on the platform and it employs the so-called parity disk - a special drive where info saved on the other drives is duplicated with an additional bit added to it. If one of the disks stops functioning, your sites will continue working from the other ones and after we replace the malfunctioning one, the data that will be duplicated on it will be recovered from what is stored on the remaining drives along with the info from the parity disk. This is performed in order to be able to recalculate the bits of each file properly and to validate the integrity of the information duplicated on the new drive. This is one more level of security for the info you upload to your shared hosting account along with the ZFS file system that analyzes a special digital fingerprint for each and every file on all of the hard drives in real time.

RAID in Semi-dedicated Servers

In case you host your Internet sites within a semi-dedicated server account from our firm, all the content you upload will be saved on SSD drives that work in RAID-Z. With this type of RAID, at least 1 of the hard drives is used for parity - when data is synced between the drives, an additional bit is added to it on the parity one. The reasoning behind this is to guarantee the integrity of the info which is cloned to a new drive in case one of the hard drives in the RAID breaks down as the content being copied on the brand new disk is recalculated from the information on the standard drives and on the parity one. Another advantage of RAID-Z is that even in the event that a drive stops working, the system can easily switch to another one immediately without service disturbances of any kind. RAID-Z adds an extra level of protection for the content which you upload on our cloud web hosting platform together with the ZFS file system that uses unique checksums in order to validate the integrity of each and every file.

RAID in VPS Servers

All VPS server accounts which we offer are generated on physical servers that take advantage of SSD drives working in RAID. At least one drive is employed for parity - one additional bit is included in the data cloned on it and if a main disk fails, this bit makes it easier to recalculate the bits of the files on the damaged hard disk so that the correct data is restored on the new drive added to the RAID. In the mean time, your Internet sites will remain online because all the data will still load from at least one more hard disk. In case you add routine backups to your VPS plan, a copy of the data will be saved on standard hard disks that also operate in RAID as we want to make sure that any kind of website content you upload will be safe and sound at all times. Using multiple hard drives in RAID for all main and backup servers allows us to offer fast and reliable web hosting service.