The process of files getting corrupted because of some hardware or software failure is called data corruption and this is one of the main problems that hosting companies face since the larger a hard disk is and the more information is kept on it, the much more likely it is for data to get corrupted. You'll find a couple of fail-safes, but often the info is corrupted silently, so neither the particular file system, nor the administrators see anything. Thus, a damaged file will be treated as a standard one and if the hard drive is a part of a RAID, that particular file will be duplicated on all other disk drives. Theoretically, this is for redundancy, but in practice the damage will be worse. Once some file gets damaged, it will be partly or entirely unreadable, which means that a text file will not be readable, an image file will display 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 widespread server file systems include various checks, they frequently fail to find some problem early enough or require a long period of time to check all of the files and the hosting server will not be functional for the time being.
No Data Corruption & Data Integrity in Semi-dedicated Servers
If you get one of our semi-dedicated server packages, you will not have to worry about silent file corruption since we use ZFS - a high level file system which checks all of the files in real time. Every time you upload a file to your hosting account, ZFS will assign a unique digital fingerprint to it - the so-called checksum. The file will be synchronized between a number of SSD drives for redundancy, so if a drive fails, the other ones will take over. ZFS compares the checksum of all of the copies on the different drives and when it detects a corrupted copy, it replaces it with a healthy one from a different drive. This is done right away, so there will be no danger for any part of your content at any time. In contrast, alternative file systems carry out checks only after a system breakdown, but since they do not use anything similar to the checksums that ZFS uses, they cannot detect silently corrupted files, so a bad copy could be replicated on the remaining disks as well and you can lose critical information. Since this is not the case with ZFS, we guarantee the integrity of every single file you upload no matter what.