The process of files being corrupted as a consequence of some hardware or software failure is known as data corruption and this is among the main problems which hosting companies face since the larger a hard drive is and the more data is placed on it, the much more likely it is for data to get corrupted. You can find various fail-safes, yet often the information gets damaged silently, so neither the file system, nor the administrators see anything. Thus, a bad file will be treated as a regular one and if the hard drive is a part of a RAID, that file will be copied on all other drives. Theoretically, this is for redundancy, but in reality the damage will be even worse. Once some file gets corrupted, it will be partly or fully unreadable, therefore a text file will no longer be readable, an image file will present a random mix of colors in case it opens at all and an archive shall be impossible to unpack, and you risk sacrificing your website content. Although the most popular server file systems feature various checks, they often fail to detect a problem early enough or require a long period of time in order to check all the files and the server will not be operational in the meantime.
No Data Corruption & Data Integrity in Cloud Hosting
We have resolved the problem of silent data corruption on all of our cloud hosting servers by using the modern Z file system, or ZFS. The latter is more advanced than other file systems because it is the only one on the market which checks all the files immediately 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 constantly synchronized between them for redundancy. ZFS constantly analyzes the checksum of all files and when any file is detected as corrupted, it is replaced promptly with a good copy from another disk. As this happens in real time, there's no risk that a corrupted file may remain or may be duplicated on the other SSDs. ZFS requires a lot of physical memory in order to perform the real-time checks and the benefit of our cloud web hosting platform is that we use multiple very powerful servers working together. If you host your sites with us, your data will be undamaged no matter what.