Data corruption is the unintended modification of a file or the loss of info that usually occurs during reading or writing. The reason could be hardware or software fail, and consequently, a file can become partially or fully corrupted, so it'll no longer function correctly because its bits will be scrambled or lacking. An image file, for example, will no longer present a real image, but a random combination of colors, an archive will be impossible to unpack as its content will be unreadable, etcetera. In the event that such a problem appears and it's not identified by the system or by an admin, the data will be corrupted silently and when this happens on a disk drive which is a part of a RAID array where the data is synced between various different drives, the corrupted file will be duplicated on all the other drives and the harm will be long term. A number of commonly used file systems either do not offer real-time checks or don't have high quality ones which will detect a problem before the damage is done, so silent data corruption is a very common matter on hosting servers where substantial volumes of data are stored.
No Data Corruption & Data Integrity in Shared Web Hosting
We have resolved the issue of silent data corruption on all our shared web hosting servers by using the amazing Z file system, or ZFS. The latter is superior to other file systems since it is the only one out there which checks all the files immediately by employing a checksum - a digital identifier that is unique for each and every file. When you upload content to your account, it'll be stored on several SSD drives and frequently synchronized between them for redundancy. ZFS regularly analyzes the checksum of all files and in case any file is detected as damaged, it is replaced instantly 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 other SSDs. ZFS requires a lot of physical memory in order to carry out the real-time checks and the advantage of our cloud website hosting platform is that we employ multiple powerful servers working together. If you host your sites with us, your information will be undamaged no matter what.