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 as the larger a hard drive is and the more data is placed on it, the much more likely it is for data to become corrupted. You'll find a couple of fail-safes, still often the info gets damaged silently, so neither the particular file system, nor the administrators see a thing. Because of this, a damaged file will be handled as a regular one and if the hard disk is a part of a RAID, that file will be duplicated on all other disk drives. In principle, this is for redundancy, but in practice the damage will be worse. When some file gets corrupted, it will be partially or entirely unreadable, so a text file will no longer be readable, an image file will present a random blend of colors if it opens at all and an archive shall be impossible to unpack, and you risk sacrificing your site content. Although the most commonly used server file systems feature various checks, they frequently fail to find some problem early enough or require an extensive period of time in order to check all the files and the web server will not be functional in the meantime.
No Data Corruption & Data Integrity in Shared Hosting
In case you host your websites in a shared hosting account from our company, you don't need to worry about any of your data ever getting damaged. We can ensure that because our cloud hosting platform uses the outstanding ZFS file system. The aforementioned is the only file system that uses checksums, or unique digital fingerprints, for every single file. All the information that you upload will be kept in a RAID i.e. simultaneously on a large number of SSDs. A lot of file systems synchronize the files between the different drives using this type of a setup, but there's no real warranty that a file won't be corrupted. This can happen throughout the writing process on any drive and afterwards a corrupted copy can be copied on all other drives. What makes the difference on our platform is that ZFS compares the checksums of all files on all drives in real time and if a corrupted file is found, it's replaced with a good copy with the correct checksum from some other drive. By doing this, your data will remain unharmed no matter what, even if a whole drive fails.