The process of files being damaged owing to some hardware or software failure is called data corruption and this is among the main problems that web hosting companies face because the larger a hard disk is and the more data is kept on it, the much more likely it is for data to be corrupted. There're various fail-safes, but often the information is damaged silently, so neither the particular file system, nor the admins see anything. Consequently, a corrupted file will be treated as a regular one and if the hard disk is a part of a RAID, that file will be duplicated on all other disk drives. Theoretically, this is for redundancy, but in practice the damage will get even worse. When a given file gets corrupted, it will be partially or entirely unreadable, therefore a text file will no longer be readable, an image file will present a random blend of colors if it opens at all and an archive shall be impossible to unpack, and you risk losing your site content. Although the most popular server file systems have various checks, they quite often fail to discover a problem early enough or require a long period of time in order to check all the files and the web server will not be operational for the time being.
No Data Corruption & Data Integrity in Shared Hosting
The integrity of the data that you upload to your new shared hosting account will be ensured by the ZFS file system which we work with on our cloud platform. The majority of web hosting service providers, including our firm, use multiple hard disks to store content and considering that the drives work in a RAID, the same information is synchronized between the drives all the time. In case a file on a drive becomes damaged for whatever reason, yet, it is likely that it will be copied on the other drives since alternative file systems don't have special checks for that. In contrast to them, ZFS applies a digital fingerprint, or a checksum, for every file. In the event that a file gets damaged, its checksum will not match what ZFS has as a record for it, and the bad copy shall be substituted with a good one from a different disk drive. Due to the fact that this happens instantly, there is no possibility for any of your files to ever get damaged.
No Data Corruption & Data Integrity in Semi-dedicated Hosting
We have avoided any probability of files getting damaged silently because the servers where your semi-dedicated hosting account will be created use a powerful file system named ZFS. Its advantage over various other file systems is that it uses a unique checksum for every single file - a digital fingerprint which is checked in real time. As we store all content on a number of SSD drives, ZFS checks if the fingerprint of a file on one drive corresponds to the one on the rest of the drives and the one it has saved. In case there is a mismatch, the bad copy is replaced with a good one from one of the other drives and since it happens in real time, there is no chance that a corrupted copy could remain on our web hosting servers or that it could be duplicated to the other hard drives in the RAID. None of the other file systems employ this type of checks and what's more, even during a file system check right after an unexpected blackout, none of them will find silently corrupted files. In comparison, ZFS won't crash after a power loss and the constant checksum monitoring makes a lenghty file system check obsolete.