RAID, or Redundant Array of Independent Disks, is a technology for keeping data on multiple hard disk drives which function together as one 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. In either case, identical information is stored on all drives and the basic benefit of employing such a setup is that in the event that a drive fails, the data will remain available on the other ones. Employing a RAID also enhances the performance because the input and output operations will be spread among a couple of drives. There are several types of RAID depending on how many hard drives are used, whether writing is carried out on all of the drives in real time or just on one, and how the information is synchronized between the hard 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 as well as the performance between the various RAID types can differ.

RAID in Cloud Hosting

All of the content that you upload to your new cloud hosting account will be stored on fast SSD drives which operate in RAID-Z. This setup is built to use the ZFS file system which runs on our cloud web hosting platform and it adds one more level of security for your website content in addition to the real-time checksum validation that ZFS uses to ensure the integrity of the data. With RAID-Z, the information is stored on several disks and at least 1 is a parity disk - whenever information is written on it, an additional bit is added, so in case any drive fails for some reason, the stability of the info can be verified by recalculating its bits in accordance with what is kept on the production hard disks and on the parity one. With RAID-Z, the functioning of our system will not be interrupted and it will continue operating efficiently until the faulty drive is replaced and the information is synchronized on it.

RAID in Semi-dedicated Hosting

The SSD drives which are used for keeping any website content uploaded to the semi-dedicated hosting accounts which we offer work in RAID-Z. This is a special configuration where one or more hard drives are used for parity i.e. the system will add an additional bit to any data copied on this type of a hard drive. In the event that a disk fails and is replaced with a new one, what data will be copied on the latter shall be a mix calculated between the data on the remaining hard disks and that on the parity one. This is done to guarantee that the data on the new drive will be accurate. During the process, the RAID will continue functioning normally and the faulty drive will not have an impact on the adequate operation of your Internet sites by any means. Using SSDs in RAID-Z is a fantastic addition to the ZFS file system which runs on our top-notch cloud platform with respect to preserving the integrity of your files as ZFS uses specific digital identifiers named checksums to avoid silent data corruption.

RAID in VPS

The physical servers where we make virtual private server work with high-speed SSD drives which will increase the speed of your websites noticeably. The drives work in RAID to guarantee that you won't lose any info as a result of a power loss or a hardware failure. The production servers use multiple drives where the data is stored and one disk is used for parity i.e. one bit is added to all of the information copied on it, which makes it much easier to recover the site content without any loss in case a main drive stops working. If you pick our backup service, the info will be kept on an independent machine which uses standard hard-disk drives and though there's no parity one in this case, they are also in a RAID to make sure that we will have a backup of your website content at all times. With this configuration your info will always be safe as it will be available on multiple disk drives.