Redundant Array of Independent Disks, or RAID, is a way of saving content on several hard drives at the same time. A RAID can be software or hardware based on the hard drives which are used - physical or logical ones, but what’s common between them is that they all operate as just a single unit where your information is stored. The main advantage of using a RAID is redundancy since the info on all of the drives is identical at all times, so even in case one of the drives fails for whatever reason, the info will still be present on the other drives. The overall performance is enhanced as well because the reading and writing processes can be split between multiple drives, so a single one won't be overloaded. There are different sorts of RAIDs where the performance and fault tolerance may differ depending on the specific setup - whether data is written on all of the drives in real time or it's written on a single drive and then mirrored on another, what amount of drives are used for the RAID, etcetera.
RAID in Website Hosting
All content that you upload to your new website hosting account will be held on fast SSD drives that operate in RAID-Z. This setup is built to use the ZFS file system which runs on our cloud Internet hosting platform and it adds one more level of security for your site content in addition to the real-time checksum validation that ZFS uses to ensure the integrity of the data. With RAID-Z, the info is stored on several disks and at least one of them is a parity disk - whenever info is written on it, an extra bit is added, so if any drive fails for whatever reason, the stability of the info can be verified by recalculating its bits based on what is saved on the production drives and on the parity one. With RAID-Z, the functioning of our system won't be interrupted and it will continue operating flawlessly until the malfunctioning drive is changed and the info is synchronized on it.
RAID in Semi-dedicated Hosting
If you host your websites within a semi-dedicated hosting account from our firm, all the content that you upload will be held on SSD drives that work in RAID-Z. With this kind of RAID, at least 1 of the disks is employed for parity - when data is synced between the hard drives, an extra bit is added to it on the parity one. The purpose behind this is to ensure the integrity of the data that is copied to a brand new drive in the event that one of the disks in the RAID stops functioning because the content being copied on the new disk is recalculated from the info on the standard hard drives and on the parity one. Another advantage of RAID-Z is the fact that even in the event that a disk drive stops working, the system can switch to another one instantly without service interruptions of any sort. RAID-Z adds an extra level of security for the content which you upload on our cloud hosting platform in addition to the ZFS file system that uses unique checksums as a way to authenticate the integrity of every single file.
RAID in VPS Hosting
The physical servers where we make virtual private server employ quick SSD drives which will increase the speed of your Internet sites significantly. The drives function in RAID to ensure that you will not lose any info due to a power loss or a hardware failure. The production servers take advantage of multiple drives where the information is saved and one disk is used for parity i.e. one bit is added to all the data copied on it, that makes it much easier to recover the site content without any loss in case a main drive stops working. If you choose our backup service, your information will be stored on an individual machine that uses standard hard-disk drives and even though there's no parity one in this case, they are also in a RAID to guarantee that we will have a backup of your content at all times. With this particular configuration your information will always be safe because it will be available on multiple drives.