RAID, which stands short for Redundant Array of Independent Disks, is a software or hardware storage virtualization technology that allows a system to take advantage of several hard drives as a single logical unit. Simply put, all drives are used as one and the information on all of them is the same. This kind of a setup has 2 key advantages over using a single drive to keep data - the first one is redundancy, so if one drive breaks down, the data will be accessible from the remaining ones, and the second is better performance as the input/output, or reading/writing operations will be distributed among a number of drives. You can find different RAID types in accordance with how many drives are used, whether reading and writing are both executed from all of the drives simultaneously, if data is written in blocks on one drive after another or is mirrored between drives in the same time, etcetera. Determined by the particular setup, the error tolerance and the performance could differ.
RAID in Website Hosting
All the content that you upload to your new website hosting account will be stored on fast SSD drives that operate in RAID-Z. This setup is built to employ 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 authentication which ZFS uses to guarantee the integrity of the data. With RAID-Z, the info is stored on several disks and at least one is a parity disk - whenever data is recorded on it, an extra bit is added, so in case any drive fails for whatever reason, the stability of the data can be verified by recalculating its bits in accordance with what is saved on the production disks and on the parity one. With RAID-Z, the operation of our system will never be interrupted and it will continue operating smoothly until the faulty drive is changed and the info is synchronized on it.
RAID in Semi-dedicated Hosting
The RAID type which we employ for the cloud hosting platform where your semi-dedicated hosting account shall be created is called RAID-Z. What is different about it is that at least one of the disks is used as a parity drive. Put simply, whenever any kind of data is duplicated on this particular drive, one more bit is included to it and if a malfunctioning disk is replaced, the information that will be cloned on it is a combination of the data on the other drives in the RAID and that on the parity one. It's done this way to make sure that your information is intact. Throughout this process, your Internet sites will be working normally since RAID-Z enables an entire drive to fail without service interruptions and it simply works by using one of the other ones as the main production drive. Using RAID-Z together with the ZFS file system which uses checksums to ensure that no data shall get silently corrupted on our servers, you'll never have to worry about the integrity of your files.
All virtual private server accounts which we offer are created on physical servers that take advantage of SSD drives functioning in RAID. At least one drive is employed for parity - one extra bit is added to the data copied on it and in case a main disk breaks down, this bit makes it easier to recalculate the bits of the files on the damaged disk drive so that the accurate info is restored on the new drive included in the RAID. Meanwhile, your websites will stay online because all the info will still load from at least 1 other hard disk. In the event that you add regular backups to your VPS package, a copy of your info will be stored on standard hard disks that also work in RAID because we want to make sure that any website content you upload will be risk-free all of the time. Working with multiple drives in RAID for all of the main and backup servers permits us to offer fast and reliable Internet hosting service.