The process of files being damaged as a consequence of some hardware or software failure is called data corruption and this is one of the main problems that web hosting companies face as the larger a hard drive is and the more data is stored on it, the much more likely it is for data to get corrupted. There are a couple of fail-safes, still often the data becomes damaged silently, so neither the particular file system, nor the administrators see anything. Thus, a corrupted file will be treated as a good one and if the hard disk is part of a RAID, that file will be duplicated on all other drives. In theory, this is for redundancy, but in practice the damage will be even worse. Once a file gets damaged, it will be partially or completely unreadable, therefore a text file will no longer be readable, an image file will show a random blend of colors in case it opens at all and an archive shall be impossible to unpack, so you risk sacrificing your site content. Although the most well-known server file systems include various checks, they often fail to identify a problem early enough or require a vast amount of time to check all files and the server will not be operational in the meantime.
No Data Corruption & Data Integrity in Cloud Hosting
If you host your websites in a cloud hosting account from our company, you don't need to worry about any of your data ever getting corrupted. We can ensure that because our cloud hosting platform works with the state-of-the-art ZFS file system. The latter is the only file system that works with checksums, or unique digital fingerprints, for each and every file. All info that you upload will be saved in a RAID i.e. simultaneously on a number of SSDs. A lot of file systems synchronize the files between the different drives with this type of a setup, but there's no real warranty that a file won't be corrupted. This may happen throughout the writing process on any drive and after that a bad copy can be copied on the rest of the drives. What is different on our platform is that ZFS analyzes the checksums of all files on all of the drives instantly and when a corrupted file is located, it's substituted with a good copy with the correct checksum from some other drive. That way, your info will remain intact no matter what, even if an entire drive fails.