Redundant Array of Independent Disks, or RAID, is a method of saving content on a number of hard disk drives concurrently. A RAID could be software or hardware depending on the drives which are used - physical or logical ones, yet what’s common between them is the fact that they all operate as just a single unit where data is stored. The biggest advantage of using a RAID is redundancy because the data on all drives will be the same at all times, so even if some drive fails for whatever reason, the info will still be present on the rest of the drives. The overall performance is also better since the reading and writing processes will be split between a number of drives, so a single one will never be overloaded. There are different sorts of RAIDs where the functionality and fault tolerance may differ according to the particular setup - whether information is written on all drives in real time or it's written on a single drive and afterwards mirrored on another, what number of drives are used for the RAID, etc.

RAID in Cloud Web Hosting

The disk drives which we use for storage with our top-notch cloud Internet hosting platform are not the standard HDDs, but fast solid-state drives (SSD). They work in RAID-Z - a special setup created for the ZFS file system that we employ. All of the content that you add to the cloud web hosting account will be held on multiple hard drives and at least 1 will be employed as a parity disk. This is a specific drive where an extra bit is included to any content copied on it. In the event that a disk in the RAID stops working, it'll be changed without service interruptions and the info will be recovered on the new drive by recalculating its bits thanks to the data on the parity disk along with that on the remaining disks. This is done so as to ensure the integrity of the data and along with the real-time checksum authentication that the ZFS file system runs on all drives, you will never need to concern yourself with losing any data no matter what.

RAID in Semi-dedicated Hosting

The SSD drives which are used for saving any content uploaded to the semi-dedicated hosting accounts which we provide function in RAID-Z. This is a specific setup where one or more hard drives are employed for parity i.e. the system will add an extra bit to any data cloned on such a disk drive. In case that a disk fails and is substituted with a new one, what info will be copied on the latter will be a mix calculated between the data on the remaining hard disks and that on the parity one. This is done to make sure that the info on the new drive will be accurate. Throughout the process, the RAID will continue functioning adequately and the faulty drive won't have an effect on the adequate operation of your sites by any means. Using SSDs in RAID-Z is a superb addition to the ZFS file system which runs on our state-of-the-art cloud platform with respect to preserving the integrity of your files since ZFS uses unique digital identifiers identified as checksums in order to prevent silent data corruption.

RAID in VPS Web Hosting

The physical servers where we make virtual private server work with super fast SSD drives which will boost the speed of your websites noticeably. The drives operate in RAID to ensure that you will not lose any information as a result of a power loss or a hardware malfunction. The production servers work with a variety of drives where the data is stored and one disk is used for parity i.e. one bit is added to all information copied on it, that makes it easier to recover the content without loss if a main drive fails. If you use our backup service, the information will be saved 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 ensure that we will have a backup of your website content all of the time. With this kind of configuration your data will always be safe since it will be available on many disk drives.