Data corruption is the damage of info due to various hardware or software fails. When a file gets corrupted, it will no longer function properly, so an application will not start or will give errors, a text file will be partially or completely unreadable, an archive will be impossible to open and unpack, etc. Silent data corruption is the process of data getting damaged without any identification by the system or an administrator, that makes it a serious problem for hosting servers as failures are very likely to happen on larger hard disk drives where substantial volumes of info are placed. When a drive is part of a RAID and the data on it is copied on other drives for redundancy, it's more than likely that the bad file will be treated as a healthy one and it'll be duplicated on all of the drives, making the harm permanent. A lot of the file systems that operate on web servers these days often are unable to discover corrupted files in real time or they need time-consuming system checks through which the server isn't functioning.
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 state-of-the-art Z file system, or ZFS. The latter is better than other file systems as it is the only one on the market that checks all the files in real time by employing a checksum - a digital identifier that's unique for each and every file. When you upload content to your account, it will be stored on several SSD drives and constantly synced between them for redundancy. ZFS regularly analyzes the checksum of all files and if any file is detected as damaged, it's replaced quickly with a good copy from some other disk. As this happens in real time, there's no risk that a corrupted file may remain or may be duplicated on the rest of the SSDs. ZFS requires a lot of physical memory to execute the real-time checks and the benefit of our cloud website hosting platform is that we use multiple very powerful servers working together. If you host your websites with us, your info will be undamaged no matter what.