The process of files getting corrupted caused by some hardware or software failure is called data corruption and this is among the main problems that hosting companies face as the larger a hard drive is and the more info is stored on it, the much more likely it is for data to get corrupted. You'll find various fail-safes, yet often the data is corrupted silently, so neither the particular file system, nor the admins see anything. As a result, a damaged file will be handled as a standard one and if the hard disk is a part of a RAID, that particular file will be copied on all other disk drives. In principle, this is for redundancy, but in reality the damage will be worse. Once a file gets corrupted, it will be partially or fully unreadable, therefore a text file will not be readable, an image file will show 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 widespread server file systems include various checks, they are likely to fail to identify a problem early enough or require a long period of time to check all the files and the hosting server will not be functional for the time being.
No Data Corruption & Data Integrity in Cloud Hosting
We warrant the integrity of the information uploaded in each and every cloud hosting account which is made on our cloud platform as we work with the advanced ZFS file system. The aforementioned is the only one which was designed to prevent silent data corruption through a unique checksum for each and every file. We'll store your data on a large number of SSD drives that operate in a RAID, so identical files will exist on several places concurrently. ZFS checks the digital fingerprint of all of the files on all of the drives in real time and if the checksum of any file differs from what it has to be, the file system swaps that file with an undamaged copy from some other drive in the RAID. No other file system uses checksums, so it is possible for data to get silently corrupted and the bad file to be duplicated on all drives over time, but since that can never happen on a server running ZFS, you won't have to concern yourself with the integrity of your data.