Redundant Array of Independent Disks, or RAID, is a method of keeping content on multiple hard drives concurrently. A RAID could be software or hardware based on the hard drives that are used - physical or logical ones, yet what is common between them is the fact that they all operate as a single unit where your information is stored. The biggest advantage of employing a RAID is redundancy since the information on all of the drives is identical all of the time, so even in the event that one of the drives fails for some reason, the data will still be available on the remaining drives. The general performance is enhanced as well since the reading and writing processes could be split between different drives, so a single one will never be overloaded. There're different kinds of RAIDs where the functionality and fault tolerance can vary according to the specific setup - whether your data is written on all of the drives real-time or it's written on a single drive and after that mirrored on another, what number of drives are used for the RAID, etc.

RAID in Hosting

The hard drives which we use for storage with our ground-breaking cloud web hosting platform are not the traditional HDDs, but extremely fast solid-state drives (SSD). They operate in RAID-Z - a special setup developed for the ZFS file system that we use. All the content that you upload to the hosting account will be held on multiple drives and at least one of them shall be employed as a parity disk. This is a special drive where an additional bit is added to any content copied on it. In the event that a disk in the RAID stops functioning, it'll be changed without service interruptions and the data will be rebuilt on the new drive by recalculating its bits thanks to the data on the parity disk plus that on the remaining disks. This is done to guarantee the integrity of the data and together with the real-time checksum verification that the ZFS file system performs on all drives, you'll never have to concern yourself with losing any information no matter what.

RAID in Semi-dedicated Hosting

In case you host your Internet sites in a semi-dedicated hosting account from our company, all the content that you upload will be stored 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 synchronized between the hard drives, an extra bit is included in it on the parity one. The purpose behind this is to guarantee the integrity of the information which is duplicated to a brand new drive in case one of the drives in the RAID stops functioning since the content being copied on the brand new disk is recalculated from the data on the standard disk drives and on the parity one. An additional advantage of RAID-Z is that even in case a disk drive stops working, the system could switch to a different one immediately without service interruptions of any type. RAID-Z adds an additional level of safety for the content which you upload on our cloud Internet hosting platform along with the ZFS file system which uses unique checksums in order to validate the integrity of each file.

RAID in VPS Hosting

The physical servers where we make virtual private server work with fast SSD drives that will increase the speed of your websites substantially. The hard drives work in RAID to ensure that you won't lose any information due to a power loss or a hardware malfunction. The production servers take advantage of many different drives where the information is saved and one disk is used for parity i.e. one bit is added to all info copied on it, which makes it much easier to recover the site content without loss in the event a main drive stops working. In case you choose our backup service, the information will be kept on an individual machine which uses standard hard-disk drives and although there isn't a parity one in this case, they are also in a RAID to ensure that we will have a backup copy of your content all of the time. With this setup your info will always be safe because it will be available on several disk drives.