The process of files being corrupted resulting from some hardware or software failure is known as data corruption and this is one of the main problems that hosting companies face since the larger a hard disk drive is and the more info is stored on it, the more likely it is for data to become corrupted. You will find different fail-safes, yet often the information becomes damaged silently, so neither the file system, nor the administrators see anything. Consequently, a bad file will be handled as a standard one and if the hard disk is part of a RAID, the file will be duplicated on all other drives. In theory, this is for redundancy, but in practice the damage will be worse. The moment a given file gets damaged, it will be partially or completely unreadable, which means that a text file will not be readable, an image file will show a random blend of colors in case it opens at all and an archive will be impossible to unpack, and you risk sacrificing your content. Although the most well-known server file systems include various checks, they are likely to fail to identify some problem early enough or require a long amount of time to be able to check all files and the web hosting server will not be operational in the meantime.
No Data Corruption & Data Integrity in Shared Website Hosting
The integrity of the data which you upload to your new shared website hosting account shall be ensured by the ZFS file system that we use on our cloud platform. Most internet hosting providers, like our company, use multiple hard disk drives to store content and since the drives work in a RAID, the exact same information is synchronized between the drives all of the time. When a file on a drive is corrupted for reasons unknown, yet, it is more than likely that it will be duplicated on the other drives as other file systems don't have special checks for this. Unlike them, ZFS employs a digital fingerprint, or a checksum, for every file. In the event that a file gets damaged, its checksum won't match what ZFS has as a record for it, and the damaged copy shall be swapped with a good one from another disk drive. Because this happens in real time, there's no risk for any of your files to ever be damaged.
No Data Corruption & Data Integrity in Semi-dedicated Hosting
We've avoided any chance of files getting corrupted silently since the servers where your semi-dedicated hosting account will be created employ a powerful file system named ZFS. Its basic advantage over various other file systems is that it uses a unique checksum for every single file - a digital fingerprint that is checked in real time. As we store all content on a number of SSD drives, ZFS checks whether the fingerprint of a file on one drive corresponds to the one on the remaining drives and the one it has stored. When there is a mismatch, the damaged copy is replaced with a healthy one from one of the other drives and because it happens right away, there's no chance that a corrupted copy can remain on our web hosting servers or that it can be copied to the other drives in the RAID. None of the other file systems work with such checks and what's more, even during a file system check following a sudden power loss, none of them can identify silently corrupted files. In comparison, ZFS won't crash after an electrical power failure and the regular checksum monitoring makes a time-consuming file system check obsolete.