The process of files getting damaged resulting from some hardware or software failure is known as data corruption and this is one of the main problems that web hosting companies face because the larger a hard disk is and the more data is filed on it, the more likely it is for data to get corrupted. You will find several fail-safes, still often the info gets damaged silently, so neither the file system, nor the admins see a thing. As a result, a bad file will be handled as a regular one and if the HDD is a part of a RAID, that particular file will be copied on all other disk drives. In principle, this is for redundancy, but in reality the damage will get worse. Once a file gets damaged, it will be partly or entirely unreadable, which means that a text file will not be readable, an image file will display a random blend of colors if it opens at all and an archive will be impossible to unpack, and you risk losing your site content. Although the most widely used server file systems feature various checks, they frequently fail to detect some problem early enough or require an extensive period of time to be able to check all the files and the web hosting server will not be operational in the meantime.

No Data Corruption & Data Integrity in Hosting

We have tackled the problem of silent data corruption on all of our hosting servers by using the advanced Z file system, or ZFS. The latter is more advanced than other file systems since it is the only one out there which checks all the files right away by using a checksum - a digital identifier that's unique for each file. When you upload content to your account, it will be stored on several SSD drives and frequently synced between them for redundancy. ZFS regularly analyzes the checksum of all files and when any file is detected as damaged, it is replaced immediately with a good copy from some other disk. As this happens in real time, there is no risk that a bad file may remain or may be copied on the remaining SSDs. ZFS needs plenty of physical memory in order to execute the real-time checks and the benefit of our cloud hosting platform is that we employ multiple very powerful servers working together. If you host your Internet sites with us, your data will be undamaged no matter what.

No Data Corruption & Data Integrity in Semi-dedicated Servers

We have avoided any possibility of files getting damaged silently because the servers where your semi-dedicated server account will be created use a powerful file system called ZFS. Its key advantage over alternative file systems is that it uses a unique checksum for each and every file - a digital fingerprint that is checked in real time. Since we keep all content on multiple SSD drives, ZFS checks if the fingerprint of a file on one drive matches the one on the remaining drives and the one it has stored. When 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 is no chance that a corrupted copy can 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 what is more, even during a file system check after a sudden power failure, none of them will identify silently corrupted files. In contrast, ZFS does not crash after a blackout and the regular checksum monitoring makes a time-consuming file system check unneeded.