Data corruption is the damage of info due to various software or hardware problems. Once a file gets corrupted, 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 entirely unreadable, an archive file will be impossible to open and then unpack, etc. Silent data corruption is the process of info getting damaged without any identification by the system or an admin, that makes it a significant problem for web hosting servers as failures are more likely to happen on larger hard disks where substantial volumes of info are placed. When a drive is part of a RAID and the information on it is copied on other drives for redundancy, it's more than likely that the damaged file will be treated as a good one and it will be copied on all drives, making the damage permanent. Lots of the file systems that run on web servers these days often are not able to discover corrupted files immediately or they need time-consuming system checks through which the server isn't operational.

No Data Corruption & Data Integrity in Shared Hosting

We have resolved the issue of silent data corruption on all our shared hosting servers by using the leading-edge Z file system, or ZFS. The latter is superior to other file systems because it is the only one out there which checks all of the files in real time by employing a checksum - a digital identifier which is unique for each and every file. When you upload content to your account, it will be stored on several SSD drives and continually synchronized between them for redundancy. ZFS constantly examines the checksum of all files and if any file is detected as corrupted, it is replaced immediately with a good copy from another disk. As this happens in real time, there's no risk that a damaged file may remain or may be duplicated on the remaining SSDs. ZFS requires lots of physical memory in order to carry out the real-time checks and the benefit of our cloud hosting platform is that we employ multiple very powerful servers working together. In case you host your sites with us, your data will be undamaged no matter what.

No Data Corruption & Data Integrity in Semi-dedicated Hosting

Your semi-dedicated hosting account will be shielded from silent data corruption because all of our storage servers make use of the effective ZFS file system. What makes the latter unique is that it uses checksums, or digital identifiers, to guarantee the integrity of every single file. When you upload content to your account, it'll be stored on several redundant drives being employed in a RAID i.e. the files will be the same across all drives. All copies of a given file will have the same checksum on all hard disks and ZFS will compare the checksums of the duplicates quickly, so if it registers a mismatch, that will indicate that one of the copies is corrupted, it will substitute that file with a healthy copy from one of the other disks. Even if there is an unexpected power failure, the data on the servers won't be corrupted and there will not be any need for a time-consuming system check that other file systems perform after some failure, prolonging the time needed for the server to go back online. ZFS is the sole file system that can really protect your content from silent data corruption.