RAID, which stands short for Redundant Array of Independent Disks, is a software or hardware storage virtualization technology that makes it possible for a system to take advantage of many hard drives as one single logical unit. In other words, all the drives are used as one and the data on all of them is identical. This type of a configuration has two key advantages over using a single drive to save data - the first is redundancy, so if one drive breaks down, the data will be accessed through the remaining ones, and the second one is better performance because the input/output, or reading/writing operations will be spread among a number of drives. You can find different RAID types in accordance with how many drives are employed, if reading and writing are both executed from all of the drives concurrently, whether data is written in blocks on one drive after another or is mirrored between drives in the same time, etcetera. Based on the exact setup, the error tolerance and the performance may vary.
RAID in Cloud Website Hosting
Any content which you upload to your new cloud website hosting account will be saved on quick SSD drives that function in RAID-Z. This setup is built to use the ZFS file system which runs on our cloud hosting platform and it adds one more level of protection for your content in addition to the real-time checksum validation that ZFS uses to guarantee the integrity of the data. With RAID-Z, the information is stored on a number of disks and at least 1 is a parity disk - whenever information is written on it, an extra bit is added, so in case any drive stops working for whatever 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 operation of our system won't be interrupted and it will continue operating flawlessly until the problematic drive is changed and the information is synced on it.
RAID in Semi-dedicated Servers
In case you host your Internet sites within a semi-dedicated server account from our firm, all the content that you upload will be saved on SSD drives which work in RAID-Z. With this kind of RAID, at least 1 of the drives is used for parity - when data is synced between the drives, an additional bit is included in it on the parity one. The reasoning behind this is to ensure the integrity of the data that is copied to a new drive in case one of the hard drives in the RAID fails because the website content being copied on the brand new disk is recalculated from the information on the standard hard drives and on the parity one. Another advantage of RAID-Z is that even in case a drive stops working, the system could switch to a different one immediately without service interruptions of any sort. RAID-Z adds one more level of protection for the content which you upload on our cloud Internet hosting platform together with the ZFS file system which uses unique checksums to verify the integrity of each and every file.
RAID in VPS Servers
All VPS server accounts that we provide are made on physical servers which take advantage of SSD drives working in RAID. At least 1 drive is employed for parity - one extra bit is added to the data duplicated on it and if a main disk breaks down, this bit makes it much simpler to recalculate the bits of the files on the failed disk drive so that the right info is recovered on the new drive added to the RAID. In the mean time, your websites will remain online since all the data will still load from at least 1 more hard drive. In the event that you add routine backups to your VPS package, a copy of the information will be stored on standard hard drives which also operate in RAID since we want to make sure that any sort of content you add will be safe and sound all of the time. Using multiple hard disks in RAID for all of the main and backup servers enables us to offer fast and reliable hosting service.