Data corruption is the damage of data because of various software or hardware fails. When a file gets corrupted, it will no longer function as it should, so an application will not start or will give errors, a text file shall be partially or entirely unreadable, an archive will be impossible to open then unpack, etc. Silent data corruption is the process of info getting harmed without any identification by the system or an administrator, that makes it a significant problem for website hosting servers as failures are very likely to occur on larger hard disk drives where considerable volumes of information are located. When a drive is a part of a RAID and the info on it is copied on other drives for redundancy, it's likely that the bad file will be treated as a healthy one and it will be duplicated on all drives, making the harm permanent. A huge number of the file systems that run on web servers nowadays often are not able to find corrupted files right away or they need time-consuming system checks during which the server is not operational.
No Data Corruption & Data Integrity in Cloud Website Hosting
We have resolved the issue of silent data corruption on all of our cloud website hosting servers by using the leading-edge Z file system, or ZFS. The latter is better than other file systems since it is the only one in existence which checks all of the files instantly by employing a checksum - a digital identifier which is unique for every single file. When you upload content to your account, it'll be stored on several SSD drives and constantly synced between them for redundancy. ZFS constantly compares the checksum of all files and in case any file is detected as damaged, it is replaced right away 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 requires plenty of physical memory to execute the real-time checks and the benefit of our cloud hosting platform is that we use 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 have avoided any chance of files getting corrupted silently as the servers where your semi-dedicated server account will be created employ a powerful file system known as ZFS. Its basic advantage over other file systems is that it uses a unique checksum for each and every file - a digital fingerprint that's checked in real time. Since we keep all content on numerous SSD drives, ZFS checks if the fingerprint of a file on one drive corresponds to the one on the remaining 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 this happens in real time, there is no chance that a corrupted copy can remain on our web hosting servers or that it can be duplicated to the other hard disks in the RAID. None of the other file systems include such checks and what is more, even during a file system check after a sudden electrical power failure, none of them will detect silently corrupted files. In contrast, ZFS does not crash after an electrical power failure and the continual checksum monitoring makes a time-consuming file system check unnecessary.