Data corruption is the damage of information caused by various hardware or software failures. The moment a file gets damaged, it will no longer work accurately, so an application will not start or will give errors, a text file could be partially or completely unreadable, an archive file will be impossible to open and unpack, etc. Silent data corruption is the process of data getting harmed without any acknowledgement by the system or an administrator, which makes it a serious problem for web hosting servers as fails are more likely to occur on larger in size hard disks where substantial volumes of info are placed. When a drive is part of a RAID and the data on it is duplicated on other drives for redundancy, it's likely that the bad file will be treated as a regular one and will be copied on all the drives, making the damage permanent. A lot of the file systems which run on web servers today often cannot find corrupted files right away or they need time-consuming system checks through which the server is not working.
No Data Corruption & Data Integrity in Shared Hosting
The integrity of the data which you upload to your new shared hosting account shall be guaranteed by the ZFS file system that we make use of on our cloud platform. Most web hosting providers, like our firm, use multiple hard drives to store content and since the drives work in a RAID, the exact same data is synchronized between the drives all the time. When a file on a drive is corrupted for reasons unknown, yet, it is very likely that it will be duplicated on the other drives as alternative file systems do not offer special checks for that. Unlike them, ZFS employs a digital fingerprint, or a checksum, for every file. If a file gets damaged, its checksum will not match what ZFS has as a record for it, and the damaged copy shall be substituted with a good one from another hard disk drive. Due to the fact that this happens in real time, there is no possibility for any of your files to ever be damaged.
No Data Corruption & Data Integrity in Semi-dedicated Hosting
We have avoided any chance of files getting damaged silently since the servers where your semi-dedicated hosting account will be created take advantage of a powerful file system called ZFS. Its basic advantage over other file systems is that it uses a unique checksum for each and every file - a digital fingerprint that is checked in real time. As we save all content on a number of SSD drives, ZFS checks if the fingerprint of a file on one drive corresponds to the one on the other drives and the one it has saved. In the event that there's a mismatch, the bad copy is replaced with a good one from one of the other drives and considering that it happens instantly, there's no chance that a damaged copy could remain on our web hosting servers or that it could be duplicated to the other hard disks in the RAID. None of the other file systems use this kind of checks and in addition, even during a file system check after a sudden power failure, none of them will find silently corrupted files. In contrast, ZFS does not crash after a power loss and the constant checksum monitoring makes a lenghty file system check unnecessary.