Data corruption is the damage of data caused by various software or hardware fails. After a file is damaged, it will no longer function accurately, so an app will not start or will give errors, a text file could be partially or fully unreadable, an archive will be impossible to open and unpack, etc. Silent data corruption is the process of data getting harmed without any identification by the system or an administrator, which makes it a serious problem for website hosting servers as problems are very likely to occur on larger hard drives where significant volumes of info are located. When a drive is part of a RAID and the data on it is replicated on other drives for redundancy, it's likely that the damaged file will be treated as a healthy one and will be duplicated on all drives, making the damage permanent. A lot of the file systems which operate on web servers today often are not able to identify corrupted files immediately or they need time-consuming system checks through which the server is not working.
No Data Corruption & Data Integrity in Website Hosting
We've resolved the matter of silent data corruption on our website 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 in existence which checks all of the files instantly by employing 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 regularly synchronized between them for redundancy. ZFS regularly analyzes the checksum of all files and in the event that any file is detected as corrupted, it's replaced promptly 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 rest of the SSDs. ZFS requires lots 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. If you host your sites with us, your information will be undamaged no matter what.
No Data Corruption & Data Integrity in Semi-dedicated Hosting
If you acquire one of our semi-dedicated hosting packages, you won't have to be concerned about silent data corruption because we use ZFS - an advanced file system that checks all files in real time. Each time you upload a file to your website hosting account, ZFS will assign a unique digital fingerprint to it - the so-called checksum. This file will be synchronized between multiple SSD drives for redundancy, so if one drive fails, the other ones will take over. ZFS compares the checksum of all of the copies on the different drives and when it detects a damaged copy, it replaces it with a healthy one from a different drive. This happens right away, so there will be no risk for any part of your content at any time. In comparison, other file systems carry out checks only after a system malfunction, but since they do not use anything similar to the checksums that ZFS uses, they can't detect silently corrupted files, so a bad copy could be replicated on the other drives as well and you could lose important info. Since this is not the case with ZFS, we can warrant the integrity of every single file you upload no matter what.