RAID, or Redundant Array of Independent Disks, is a technology for saving data on a number hard disk drives that operate together as one logical unit. The drives could be physical or logical i.e. in the latter case one drive is split into independent ones using virtualization software. In either case, exactly the same data is saved on all the drives and the key benefit of employing this kind of a setup is that in the event that a drive breaks down, the data will still be available on the remaining ones. Using a RAID also enhances the overall performance because the input and output operations will be spread among several drives. There are several kinds of RAID based on how many drives are used, whether writing is done on all drives in real time or just on a single one, and how the information is synced between the hard drives - whether it's written in blocks on one drive after another or all of it is mirrored from one on the others. These factors indicate that the fault tolerance as well as the performance between the different RAID types can vary.

RAID in Hosting

All the content that you upload to your new hosting account will be held on quick SSD drives that operate in RAID-Z. This configuration is built to employ the ZFS file system that runs on our cloud web hosting platform and it adds one more level of protection for your website content in addition to the real-time checksum authentication that ZFS uses to guarantee the integrity of the data. With RAID-Z, the data is saved on a couple of disks and at least one is a parity disk - whenever data is recorded on it, an extra bit is added, so in the event that any drive stops working for whatever reason, the stability of the info can be verified by recalculating its bits in accordance with what is saved on the production hard drives and on the parity one. With RAID-Z, the functioning of our system will not be interrupted and it'll continue functioning efficiently until the faulty drive is changed and the data is synced on it.

RAID in Semi-dedicated Servers

The data uploaded to any semi-dedicated server account is stored on SSD drives which operate in RAID-Z. One of the drives in type of a setup is used for parity - whenever data is copied on it, an additional bit is added. If a disk turns out to be faulty, it will be taken out of the RAID without disturbing the functioning of the sites since the data will load from the remaining drives, and when a new drive is included, the info that will be cloned on it will be a blend between the data on the parity disk and data saved on the other drives in the RAID. That is done to guarantee that the info that is being copied is accurate, so once the new drive is rebuilt, it could be included in the RAID as a production one. This is one more guarantee for the integrity of your info as the ZFS file system which runs on our cloud hosting platform analyzes a unique checksum of all of the copies of the files on the different drives so as to avoid any chance of silent data corruption.

RAID in VPS Servers

If you employ one of our VPS server plans, any content you upload will be stored on SSD drives which work in RAID. At least 1 drive is employed for parity so as to ensure the integrity of the data. In simple terms, this is a special drive where info is copied with one bit added to it. If a disk from the RAID stops functioning, your sites will continue working and when a new disk replaces the defective one, the bits of the data that will be copied on it are calculated by using the healthy and the parity drives. By doing this, any potential for corrupting data throughout the process is prevented. We also employ standard hard drives that operate in RAID for storing backup copies, so in case you add this service to your VPS package, your content will be saved on multiple drives and you will never have to worry about its integrity even in the event of multiple drive failures.