Data corruption is the damage of information due to various hardware or software failures. Once a file gets corrupted, it will no longer function accurately, so an app will not start or will give errors, a text file will be partially or completely unreadable, an archive will be impossible to open then unpack, etc. Silent data corruption is the process of information getting damaged without any identification by the system or an administrator, which makes it a significant problem for website hosting servers as failures are much more likely to occur on bigger hard disk drives where significant volumes of info are placed. In case a drive is a part of a RAID and the info on it is replicated on other drives for redundancy, it is likely that the damaged file will be treated as a standard one and it'll be duplicated on all of the drives, making the damage permanent. Lots of the file systems that operate on web servers these days often cannot find corrupted files instantly or they need time-consuming system checks through which the server isn't functioning.

No Data Corruption & Data Integrity in Semi-dedicated Servers

You won't need to deal with any silent data corruption issues if you buy one of our semi-dedicated server plans because the ZFS file system that we take advantage of on our cloud hosting platform uses checksums to ensure that all the files are undamaged all of the time. A checksum is a unique digital fingerprint which is assigned to each and every file kept on a server. Since we store all content on a number of drives at the same time, the same file uses the same checksum on all drives and what ZFS does is that it compares the checksums between the different drives right away. In the event that it detects that a file is corrupted and its checksum is different from what it should be, it replaces that file with a healthy copy without delay, avoiding any possibility of the damaged copy to be synchronized on the rest of the hard drives. ZFS is the sole file system out there which uses checksums, which makes it far superior to other file systems that cannot detect silent data corruption and duplicate bad files across hard drives.