The process of files being corrupted as a result of some hardware or software failure is known as data corruption and this is among the main problems which web hosting companies face because the larger a hard drive is and the more info is kept on it, the much more likely it is for data to be corrupted. You'll find several fail-safes, still often the data is corrupted silently, so neither the file system, nor the administrators see a thing. As a result, a bad file will be treated as a good one and if the HDD is part of a RAID, that particular file will be duplicated on all other drives. In theory, this is done for redundancy, but in practice the damage will be worse. When a file gets damaged, it will be partly or entirely unreadable, which means that a text file will no longer be readable, an image file will show a random blend of colors in case it opens at all and an archive shall be impossible to unpack, so you risk losing your website content. Although the most popular server file systems have various checks, they often fail to discover some problem early enough or require an extensive time period in order to check all the files and the hosting server will not be functional 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 guaranteed by the ZFS file system which we work with on our cloud platform. The vast majority of internet hosting providers, including our firm, use multiple hard drives to keep content and considering that the drives work in a RAID, exactly the same info is synchronized between the drives all the time. If a file on a drive is corrupted for whatever reason, yet, it's more than likely that it will be reproduced on the other drives because alternative file systems do not feature special checks for that. Unlike them, ZFS uses a digital fingerprint, or a checksum, for each file. In case a file gets corrupted, its checksum will not match what ZFS has as a record for it, which means that the damaged copy will be substituted with a good one from a different hard drive. Because this happens immediately, there's no possibility for any of your files to ever be corrupted.
No Data Corruption & Data Integrity in Semi-dedicated Servers
We've avoided any risk of files getting damaged silently because the servers where your semi-dedicated server account will be created take advantage of a powerful file system known as ZFS. Its key advantage over other file systems is that it uses a unique checksum for every single file - a digital fingerprint that is checked in real time. Since we save all content on a number of SSD drives, ZFS checks whether the fingerprint of a file on one drive matches the one on the rest of the drives and the one it has stored. In the event that there's a mismatch, the damaged copy is replaced with a healthy one from one of the other drives and considering that this happens instantly, there's no chance that a damaged copy can remain on our servers or that it could be copied to the other drives in the RAID. None of the other file systems work with such checks and what is more, even during a file system check following a sudden power failure, none of them will detect silently corrupted files. In contrast, ZFS doesn't crash after a power loss and the continual checksum monitoring makes a lenghty file system check unnecessary.