The process of files being corrupted as a result of some hardware or software failure is known as data corruption and this is among the main problems which hosting companies face because the larger a hard drive is and the more info is kept on it, the more likely it is for data to be corrupted. You'll find various fail-safes, yet often the information is corrupted silently, so neither the particular file system, nor the admins detect anything. Thus, a corrupted file will be treated as a regular one and if the hard drive is part of a RAID, the file will be duplicated on all other disk drives. In theory, this is for redundancy, but in reality the damage will be even worse. The moment a file gets damaged, it will be partly or fully unreadable, which means that a text file will not be readable, an image file will present a random combination of colors in case it opens at all and an archive will be impossible to unpack, so you risk losing your website content. Although the most frequently used server file systems include various checks, they often fail to detect a problem early enough or require a long period of time to be able to check all the files and the hosting server will not be operational for the time being.
No Data Corruption & Data Integrity in Cloud Hosting
We have tackled the problem of silent data corruption on all of our cloud hosting servers by using the cutting-edge Z file system, or ZFS. The latter is better than other file systems because it is the only one in existence which checks all of the files instantly by employing a checksum - a digital identifier which is unique for each file. When you upload content to your account, it'll be stored on several SSD drives and frequently synced between them for redundancy. ZFS constantly compares the checksum of all files and if any file is detected as corrupted, it's replaced quickly with a good copy from another disk. As this happens in real time, there's no risk that a damaged file may remain or may be copied on the remaining SSDs. ZFS needs lots of physical memory in order to carry out the real-time checks and the advantage of our cloud hosting platform is that we use multiple powerful servers working together. If you host your sites with us, your data will be undamaged no matter what.
No Data Corruption & Data Integrity in Semi-dedicated Servers
In case you acquire one of our semi-dedicated server packages, you won't need to be concerned about silent file corruption because we use ZFS - an advanced file system that checks all files in real time. Each time you upload a file to your website hosting account, ZFS will assign a unique digital fingerprint to it - the so-called checksum. The file will be synced between several SSD drives for redundancy, so if one drive fails, the other ones will take over. ZFS compares the checksum of all of the copies on the different drives and if it detects a damaged copy, it replaces it with a healthy one from a different drive. This is done instantly, so there will be no danger for any part of your content at any time. By comparison, other file systems carry out checks only after a system failure, but since they don't use anything similar to the checksums which ZFS uses, they won't detect silently corrupted files, so a corrupted copy could be replicated on the remaining drives as well and you could lose crucial info. Because this is not the case with ZFS, we're able to warrant the integrity of every single file you upload no matter what.