Data corruption is the damage of information caused by various software or hardware fails. Once a file gets corrupted, it will no longer function properly, so an app will not start or will give errors, a text file can be partially or entirely unreadable, an archive file will be impossible to open and unpack, etc. Silent data corruption is the process of data getting harmed without any acknowledgement by the system or an admin, that makes it a serious problem for website hosting servers as fails are more likely to occur on bigger hard disk drives where vast volumes of info are kept. In case a drive is a part of a RAID and the information on it is copied on other drives for redundancy, it's likely that the damaged file will be treated as a healthy one and it will be copied on all the drives, making the harm permanent. Lots of the file systems that operate on web servers today often are unable to discover corrupted files in real time or they need time-consuming system checks during which the server is not functioning.

No Data Corruption & Data Integrity in Shared Website Hosting

We've dealt with the problem of silent data corruption on all our shared website hosting servers by using the modern Z file system, or ZFS. The latter is better than other file systems as it is the only one on the market which checks all of the files right away by using a checksum - a digital identifier that's unique for every single file. When you upload content to your account, it'll be stored on several SSD drives and constantly synchronized between them for redundancy. ZFS constantly examines the checksum of all files and when any file is detected as corrupted, it is replaced instantly with a good copy from some other disk. As this happens in real time, there is no risk that a corrupted file may remain or may be duplicated on the rest of the SSDs. ZFS needs a lot of physical memory in order to perform the real-time checks and the advantage of our cloud hosting platform is that we take advantage of multiple very powerful servers working together. If you host your Internet sites with us, your information will be intact no matter what.