RAID, or Redundant Array of Independent Disks, is a technology for saving data on a number hard disks that operate together as a single logical unit. The drives could be physical or logical i.e. in the second case a single drive is divided into different ones using virtualization software. Either way, exactly the same data is saved on all the drives and the main benefit of using such a setup is that if a drive breaks down, the data will still be available on the other ones. Having a RAID also improves the overall performance as the input and output operations will be spread among a couple of drives. There are several kinds of RAID depending on how many hard drives are used, whether writing is done on all of the drives in real time or just on one, and how the info is synchronized between the drives - whether it is recorded in blocks on one drive after another or it is mirrored from one on the others. All of these factors show that the fault tolerance and the performance between the different RAID types may differ.

RAID in Cloud Website Hosting

Our cutting-edge cloud web hosting platform where all cloud website hosting accounts are made uses fast SSD drives as an alternative to the standard HDDs, and they operate in RAID-Z. With this configuration, numerous hard disks function together and at least a single one is a dedicated parity disk. Basically, when data is written on the remaining drives, it is copied on the parity one adding an extra bit. This is done for redundancy as even if a drive fails or falls out of the RAID for whatever reason, the information can be rebuilt and verified using the parity disk and the data stored on the other ones, which means that not a single thing will be lost and there won't be any service disorders. This is another level of security for your data along with the advanced ZFS file system which uses checksums to ensure that all data on our servers is intact and is not silently corrupted.

RAID in Semi-dedicated Hosting

The data uploaded to any semi-dedicated hosting account is stored on SSD drives which function in RAID-Z. One of the drives in type of a configuration is used for parity - each time data is copied on it, an extra bit is added. In case a disk happens to be flawed, it will be taken out of the RAID without disturbing the functioning of the sites since the data will load from the other drives, and when a new drive is added, the data that will be cloned on it will be a combination between the info on the parity disk and data saved on the other drives in the RAID. That is done so as to ensure that the data which is being cloned is correct, so as soon as 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 data since the ZFS file system which runs on our cloud web hosting platform compares a special checksum of all copies of the files on the different drives so as to avoid any possibility of silent data corruption.

RAID in VPS Web Hosting

The physical servers where we generate virtual private server employ extremely fast SSD drives that will raise the speed of your Internet sites significantly. The drives work in RAID to ensure that you won't lose any info as a result of a power loss or a hardware failure. The production servers use many different drives where the information is kept and one disk is used for parity i.e. one bit is added to all information copied on it, which makes it much easier to recover the website content without any loss if a main drive stops working. If you pick our backup service, the data will be kept on an independent machine that uses standard hard-disk drives and even though there is no parity one in this case, they are also in a RAID to ensure that we will have a backup of your website content all the time. With this setup your data will always be safe since it will be available on a lot of disk drives.