Data corruption is the damage of information caused by various hardware or software failures. The moment a file gets damaged, it will no longer work properly, so an application will not start or shall give errors, a text file will be partially or fully unreadable, an archive will be impossible to open and then unpack, etc. Silent data corruption is the process of info getting damaged without any acknowledgement by the system or an admin, which makes it a significant problem for web hosting servers as failures are more likely to happen on larger hard drives where vast volumes of info are kept. If a drive is part of a RAID and the info on it is replicated on other drives for redundancy, it's very likely that the damaged file will be treated as a regular one and it'll be duplicated on all drives, making the damage permanent. A lot of the file systems that run on web servers these days often cannot detect corrupted files right away or they need time-consuming system checks during which the server is not functioning.
No Data Corruption & Data Integrity in Website Hosting
We guarantee the integrity of the information uploaded in every single website hosting
account that is created on our cloud platform since we employ the advanced ZFS file system. The aforementioned is the only one which was designed to avert silent data corruption thanks to a unique checksum for each file. We will store your information on multiple SSD drives which 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 the drives in real time and in case the checksum of any file is different from what it needs to be, the file system swaps that file with a healthy version from another drive from the RAID. There's no other file system which uses checksums, so it is possible for data to get silently corrupted and the bad file to be duplicated on all drives with time, but since this can never happen on a server running ZFS, you don't have to worry about the integrity of your info.