The process of files being damaged caused by some hardware or software failure is referred to as data corruption and this is among the main problems which web hosting companies face as the larger a hard disk drive is and the more info is filed on it, the much more likely it is for data to become corrupted. You'll find different fail-safes, but often the data becomes damaged silently, so neither the particular file system, nor the admins see anything. Thus, a bad file will be handled as a good one and if the hard drive is a part of a RAID, that file will be copied on all other disk drives. Theoretically, this is for redundancy, but in practice the damage will be even worse. The moment a given file gets corrupted, it will be partly or completely unreadable, therefore a text file will not be readable, an image file will present a random mix of colors if it opens at all and an archive shall be impossible to unpack, and you risk sacrificing your content. Although the most well-known server file systems include various checks, they frequently fail to find some problem early enough or require an extensive amount of time to check all the files and the web hosting server will not be operational in the meantime.
No Data Corruption & Data Integrity in Web Hosting
We've tackled the issue of silent data corruption on our web hosting servers by using the hi-tech Z file system, or ZFS. The latter is better than other file systems since it is the only one out there that checks all of the files right away by employing a checksum - a digital identifier that is unique for every single file. When you upload content to your account, it'll be stored on several SSD drives and continually synchronized between them for redundancy. ZFS constantly analyzes the checksum of all files and when any file is detected as corrupted, it's replaced instantly with a good copy from another disk. As this happens in real time, there is no risk that a bad file may remain or may be copied on the remaining SSDs. ZFS needs a lot of physical memory to carry out the real-time checks and the advantage of our cloud web hosting platform is that we take advantage of multiple powerful servers working together. If you host your Internet sites with us, your info will be intact no matter what.