Data corruption is the unintentional transformation of a file or the losing of info that often occurs during reading or writing. The reason may be hardware or software failure, and as a result, a file could become partially or fully corrupted, so it will no longer work properly since its bits shall be scrambled or lacking. An image file, for example, will no longer display an actual image, but a random mix of colors, an archive will be impossible to unpack as its content will be unreadable, etcetera. In the event that this kind of an issue appears and it's not found by the system or by an administrator, the data will get corrupted silently and if this happens on a drive that is part of a RAID array where the data is synced between various different drives, the corrupted file will be copied on all other drives and the harm will become permanent. A number of popular file systems either do not offer real-time checks or do not have high quality ones which will detect an issue before the damage is done, so silent data corruption is a common issue on hosting servers where large volumes of information are stored.
No Data Corruption & Data Integrity in Cloud Web Hosting
We've tackled the problem of silent data corruption on all of our cloud web hosting servers by using the amazing Z file system, or ZFS. The latter is superior to other file systems because it is the only one in existence that checks all the files immediately 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 synchronized between them for redundancy. ZFS regularly compares the checksum of all files and in the event that any file is detected as damaged, it is replaced right away with a good copy from some other disk. As this happens in real time, there's no risk that a bad file may remain or may be duplicated on the remaining SSDs. ZFS requires a lot of physical memory in order to execute the real-time checks and the advantage of our cloud hosting platform is that we work with multiple powerful servers working together. In case you host your websites with us, your info will be intact no matter what.