Data corruption is the damage of info due to various hardware or software problems. After a file gets corrupted, it will no longer function correctly, so an app will not start or shall give errors, a text file will be partially or fully unreadable, an archive file will be impossible to open and unpack, etc. Silent data corruption is the process of data getting damaged without any acknowledgement by the system or an administrator, which makes it a significant problem for web hosting servers as failures are very likely to happen on bigger hard drives where vast volumes of info are kept. If a drive is part of a RAID and the information on it is copied on other drives for redundancy, it's very likely that the bad file will be treated as a healthy one and will be copied on all drives, making the harm permanent. A lot of the file systems which run on web servers today often are unable to locate corrupted files right away or they need time-consuming system checks through which the server is not operational.
No Data Corruption & Data Integrity in Web Hosting
In case you host your sites in a web hosting
account from our company, you don't need to worry about your data ever getting damaged. We can ensure that due to the fact that our cloud hosting platform employs the reliable ZFS file system. The aforementioned is the only file system that works with checksums, or unique digital fingerprints, for each and every file. Any kind of data that you upload will be kept in a RAID i.e. simultaneously on many SSD drives. All file systems synchronize the files between the separate drives using such a setup, but there's no real warranty that a file will not be corrupted. This can occur during the writing process on any drive and after that a damaged copy may be copied on the other drives. What is different on our platform is that ZFS examines the checksums of all files on all drives live and in case a corrupted file is discovered, it's replaced with a good copy with the correct checksum from some other drive. That way, your information will continue to be unharmed no matter what, even if a whole drive fails.
No Data Corruption & Data Integrity in Semi-dedicated Hosting
We have avoided any probability of files getting damaged silently because the servers where your semi-dedicated hosting
account will be created work with a powerful file system called ZFS. Its key advantage over alternative file systems is that it uses a unique checksum for each file - a digital fingerprint that is checked in real time. Since we keep all content on a number of SSD drives, ZFS checks whether the fingerprint of a file on one drive corresponds to the one on the remaining drives and the one it has stored. If there is a mismatch, the corrupted copy is replaced with a healthy one from one of the other drives and since it happens right away, there's no chance that a corrupted copy can remain on our website hosting servers or that it can be copied to the other drives in the RAID. None of the other file systems work with such checks and in addition, even during a file system check right after a sudden blackout, none of them can find silently corrupted files. In comparison, ZFS will not crash after an electrical power failure and the continual checksum monitoring makes a lenghty file system check obsolete.