Data corruption is the damage of info caused by various software or hardware failures. The moment a file is damaged, it will no longer work as it should, so an app will not start or will give errors, a text file can be partially or completely unreadable, an archive file will be impossible to open and then unpack, etc. Silent data corruption is the process of information getting harmed without any identification by the system or an admin, which makes it a significant problem for web hosting servers as failures are very likely to occur on bigger hard disk drives where vast volumes of info are placed. In case a drive is a part of a RAID and the info on it is copied on other drives for redundancy, it is likely that the damaged file will be treated as an undamaged one and it will be duplicated on all the drives, making the damage permanent. Lots of the file systems that operate on web servers nowadays often cannot recognize corrupted files instantly or they need time-consuming system checks during which the server is not working.
No Data Corruption & Data Integrity in Hosting
If you host your Internet sites in a hosting account from our firm, you will not have to worry about any of your data ever getting corrupted. We can ensure that because our cloud hosting platform employs the revolutionary ZFS file system. The latter is the only file system that works with checksums, or unique digital fingerprints, for each and every file. Any info that you upload will be stored in a RAID i.e. simultaneously on multiple SSD drives. All the file systems synchronize the files between the different drives using this type of a setup, but there's no real guarantee that a file will not be corrupted. This may happen throughout the writing process on any drive and after that a damaged copy can be copied on the other drives. What is different on our platform is the fact that ZFS examines the checksums of all files on all of the drives in real time and if a corrupted file is found, it is substituted with a good copy with the correct checksum from another drive. By doing this, your data will stay unharmed no matter what, even if a whole drive fails.
No Data Corruption & Data Integrity in Semi-dedicated Servers
We've avoided any probability of files getting damaged silently due to the fact that the servers where your semi-dedicated server account will be created take advantage of a powerful file system known as ZFS. Its advantage over various other file systems is that it uses a unique checksum for each and every file - a digital fingerprint that's checked in real time. As we save all content on multiple SSD drives, ZFS checks if the fingerprint of a file on one drive corresponds to the one on the rest of the drives and the one it has saved. If there's a mismatch, the damaged copy is replaced with a good one from one of the other drives and considering that it happens in real time, there's no chance that a damaged copy can remain on our hosting servers or that it could be copied to the other drives in the RAID. None of the other file systems include this type of checks and what's more, even during a file system check after a sudden blackout, none of them will discover silently corrupted files. In comparison, ZFS will not crash after a power loss and the regular checksum monitoring makes a lenghty file system check unnecessary.