RAID, which is an acronym of Redundant Array of Independent Disks, is a software or hardware storage virtualization technology which makes it possible for a system to use many hard drives as a single logical unit. Simply put, all of the drives are used as one and the data on all of them is the same. This type of a configuration has 2 key advantages over using just a single drive to store data - the first one is redundancy, so in the event that one drive doesn't work, the information will be accessed through the remaining ones, and the second is better performance since the input/output, or reading/writing operations will be distributed among different drives. You can find different RAID types in accordance with how many drives are employed, whether reading and writing are both done from all drives concurrently, if data is written in blocks on one drive after another or is mirrored between drives in the same time, etcetera. Based on the exact setup, the fault tolerance and the performance vary.

RAID in Cloud Website Hosting

The disk drives which we use for storage with our ground-breaking cloud hosting platform are not the standard HDDs, but high-speed solid-state drives (SSD). They work in RAID-Z - a special setup created for the ZFS file system which we employ. All the content that you upload to the cloud website hosting account will be held on multiple disk drives and at least one of them shall be used as a parity disk. This is a special drive where an extra bit is included to any content copied on it. If a disk in the RAID fails, it'll be replaced without service interruptions and the information will be recovered on the new drive by recalculating its bits using the data on the parity disk plus that on the other disks. This is done in order to guarantee the integrity of the data and along with the real-time checksum validation that the ZFS file system executes on all drives, you will never have to worry about losing any data no matter what.

RAID in Semi-dedicated Servers

In case you host your Internet sites within a semi-dedicated server account from our firm, all of the content which you upload will be stored on SSD drives which work in RAID-Z. With this form of RAID, at least one of the drives is employed for parity - when data is synced between the hard drives, an extra bit is added to it on the parity one. The reasoning behind this is to ensure the integrity of the information that is duplicated to a brand new drive in case one of the hard drives in the RAID fails as the content being copied on the brand new disk is recalculated from the data on the standard hard drives and on the parity one. Another advantage of RAID-Z is that even in case a drive stops functioning, the system can easily switch to another one quickly without service interruptions of any type. RAID-Z adds one more level of security for the content which you upload on our cloud web hosting platform along with the ZFS file system which uses unique checksums to verify the integrity of each and every file.

RAID in VPS Servers

If you employ one of our VPS server solutions, any content that you upload will be kept on SSD drives that operate in RAID. At least one drive is intended for parity to guarantee the integrity of your data. In simple terms, this is a special drive where info is copied with one bit added to it. In case a disk within the RAID stops working, your sites will continue working and when a new disk replaces the flawed one, the bits of the info that will be copied on it are calculated using the healthy and the parity drives. This way, any possibility of corrupting data throughout the process is averted. We also use standard hard disks which function in RAID for storing backup copies, so should you add this service to your VPS plan, your website content will be saved on multiple drives and you won't ever have to worry about its integrity even in the event of multiple drive failures.