Redundant Array of Independent Disks, or RAID, is a method of keeping content on multiple hard drives simultaneously. A RAID can be software or hardware depending on the hard drives which are used - physical or logical ones, yet what’s common between them is that they all work as just one single unit where information is kept. The main advantage of employing a RAID is redundancy because the data on all the drives is identical all of the time, so even if a drive fails for whatever reason, the data will still be present on the remaining drives. The general performance will also improve because the reading and writing processes will be split between multiple drives, so a single one will not be overloaded. There're different types of RAIDs where the efficiency and fault tolerance can vary depending on the particular setup - whether information is written on all drives real-time or it's written on a single drive and after that mirrored on another, what amount of drives are used for the RAID, etc.
RAID in Website Hosting
All content which you upload to your new website hosting account will be held on fast SSD drives that operate in RAID-Z. This configuration is built to employ the ZFS file system which runs on our cloud Internet hosting platform and it adds one more level of protection for your site content on top of the real-time checksum verification that ZFS uses to guarantee 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 data is written on it, an additional bit is added, so in case any drive stops functioning for some reason, the integrity of the information 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 never be interrupted and it'll continue functioning efficiently until the faulty drive is changed and the information is synchronized on it.
RAID in Semi-dedicated Hosting
The data uploaded to any semi-dedicated hosting account is stored on SSD drives that work in RAID-Z. One of the drives in type of a configuration is used for parity - every time data is copied on it, an additional bit is added. In case a disk turns out to be flawed, it will be taken out of the RAID without disturbing the functioning of the websites since the data will load from the remaining drives, and when a brand new drive is added, the info that will be cloned on it will be a blend between the information on the parity disk and data saved on the other hard disks in the RAID. This is done so as to guarantee that the data that is being copied is correct, so as soon as the new drive is rebuilt, it could be integrated into the RAID as a production one. This is an additional guarantee for the integrity of your info as the ZFS file system which runs on our cloud hosting platform analyzes a special checksum of all copies of your files on the different drives to be able to avoid any possibility of silent data corruption.
RAID in VPS Hosting
The physical servers where we make virtual private server work with high-speed SSD drives which will boost the speed of your websites significantly. The hard drives operate in RAID to make sure that you won't lose any information as a result of a power loss or a hardware failure. The production servers take advantage of a variety of drives where the information is saved 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 content without loss in case a main drive fails. If you pick our backup service, your data will be stored on an individual machine which 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 all of the time. With this kind of configuration your information will always be safe because it will be available on a lot of disk drives.