Data corruption is the damage of data because of various hardware or software fails. When a file gets damaged, it will no longer work properly, so an application will not start or shall give errors, a text file can be partially or completely unreadable, an archive will be impossible to open and then unpack, etc. Silent data corruption is the process of info getting harmed without any acknowledgement by the system or an administrator, that makes it a serious problem for website hosting servers as failures are more likely to occur on larger hard disks where vast volumes of information are kept. If a drive is part of a RAID and the information on it is duplicated on other drives for redundancy, it is very likely that the bad file will be treated as a regular one and it will be copied on all of the drives, making the harm permanent. Lots of the file systems which run on web servers today often are unable to recognize corrupted files instantly or they need time-consuming system checks through which the server is not functioning.
No Data Corruption & Data Integrity in Cloud Website Hosting
We've resolved the matter of silent data corruption on our cloud website hosting
servers by using the state-of-the-art Z file system, or ZFS. The latter is superior to other file systems as it is the only one in existence that checks all the files right away by using a checksum - a digital identifier that's unique for each file. When you upload content to your account, it will be stored on several SSD drives and frequently synchronized between them for redundancy. ZFS regularly compares the checksum of all files and when any file is detected as corrupted, it's replaced instantly with a good copy from some other disk. As this happens in real time, there is no risk that a damaged file may remain or may be duplicated on the rest of the SSDs. ZFS needs a lot of physical memory in order to carry out the real-time checks and the benefit of our cloud web hosting platform is that we take advantage of multiple very powerful servers working together. In case you host your websites with us, your data will be undamaged no matter what.