Data corruption is the damage of data because of various software or hardware failures. When a file gets corrupted, it will no longer function correctly, so an application will not start or shall give errors, a text file could be partially or entirely unreadable, an archive will be impossible to open then unpack, etc. Silent data corruption is the process of info getting damaged without any identification by the system or an admin, that makes it a serious problem for hosting servers as fails are very likely to occur on larger in size hard drives where considerable volumes of information are placed. In case a drive is a part of a RAID and the data on it is copied on other drives for redundancy, it is more than likely that the bad file will be treated as an undamaged one and will be copied on all the drives, making the harm permanent. A lot of the file systems that operate on web servers today often are unable to identify corrupted files instantly or they need time-consuming system checks during which the server is not functioning.

No Data Corruption & Data Integrity in Cloud Hosting

We've tackled the issue of silent data corruption on our cloud hosting servers by using the leading-edge Z file system, or ZFS. The latter is superior to other file systems since it is the only one on the market that checks all the files right away by using a checksum - a digital identifier which is unique for each file. When you upload content to your account, it will be stored on several SSD drives and constantly synced between them for redundancy. ZFS constantly analyzes the checksum of all files and if any file is detected as corrupted, it's replaced quickly 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 copied on the remaining SSDs. ZFS requires a lot of physical memory to carry out the real-time checks and the advantage of our cloud website hosting platform is that we work with multiple very powerful servers working together. If you host your Internet sites with us, your data will be intact no matter what.

No Data Corruption & Data Integrity in Semi-dedicated Servers

We have avoided any risk of files getting damaged silently since the servers where your semi-dedicated server account will be created employ a powerful file system called ZFS. Its main advantage over other 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 a number of SSD drives, ZFS checks whether the fingerprint of a file on one drive corresponds to the one on the other drives and the one it has stored. When there is a mismatch, the corrupted copy is replaced with a good one from one of the other drives and because it happens in real time, there's no chance that a damaged copy could remain on our web hosting servers or that it can be copied to the other hard disks in the RAID. None of the other file systems include this kind of checks and what's more, even during a file system check following an unexpected power loss, none of them will identify silently corrupted files. In comparison, ZFS won't crash after an electrical power failure and the continual checksum monitoring makes a lenghty file system check unnecessary.