The process of files being damaged caused by some hardware or software failure is called data corruption and this is one of the main problems which hosting companies face as the larger a hard disk drive is and the more information is placed on it, the much more likely it is for data to be corrupted. You can find several fail-safes, still often the information gets damaged silently, so neither the particular file system, nor the administrators see anything. As a result, a damaged file will be treated as a regular one and if the hard disk drive is a part of a RAID, the file will be copied on all other disk drives. In principle, this is done for redundancy, but in practice the damage will get even worse. The moment a file gets damaged, it will be partly or fully unreadable, which means that a text file will no longer be readable, an image file will show a random mix of colors if it opens at all and an archive will be impossible to unpack, so you risk sacrificing your website content. Although the most commonly used server file systems feature various checks, they are likely to fail to detect some problem early enough or require a long time period to be able to check all the files and the server will not be operational for the time being.

No Data Corruption & Data Integrity in Shared Web Hosting

We have dealt with the issue of silent data corruption on all our shared web hosting servers by using the cutting-edge Z file system, or ZFS. The latter is more advanced than other file systems as it is the only one on the market that checks all files right away by using a checksum - a digital identifier which is unique for each and every file. When you upload content to your account, it'll be stored on several SSD drives and continually synced between them for redundancy. ZFS regularly compares the checksum of all files and if any file is detected as corrupted, it's replaced promptly with a good copy from another disk. As this happens in real time, there is no risk that a corrupted file may remain or may be duplicated on the remaining SSDs. ZFS needs lots of physical memory in order to execute the real-time checks and the advantage of our cloud website hosting platform is that we work with multiple powerful servers working together. In case you host your Internet sites with us, your information will be undamaged no matter what.

No Data Corruption & Data Integrity in Semi-dedicated Servers

We've avoided any probability of files getting corrupted silently since 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 alternative file systems is that it uses a unique checksum for each and every file - a digital fingerprint that is checked in real time. Since we keep all content on multiple SSD drives, ZFS checks if the fingerprint of a file on one drive corresponds to the one on the other drives and the one it has stored. In case there's a mismatch, the corrupted copy is replaced with a healthy one from one of the other drives and because this happens in real time, there's no chance that a damaged copy could remain on our servers or that it can be copied to the other hard disks in the RAID. None of the other file systems include this type of checks and what's more, even during a file system check after an unexpected power failure, none of them will detect silently corrupted files. In comparison, ZFS won't crash after a power loss and the constant checksum monitoring makes a time-consuming file system check unnecessary.