The process of files being corrupted due to some hardware or software failure is known as data corruption and this is among the main problems that web hosting companies face since the larger a hard drive is and the more information is stored on it, the much more likely it is for data to be corrupted. You can find different fail-safes, but often the information gets damaged silently, so neither the particular file system, nor the admins see anything. Thus, a damaged file will be handled as a standard one and if the hard drive is part of a RAID, that file will be duplicated on all other drives. Theoretically, this is done for redundancy, but in reality the damage will be even worse. When a given file gets corrupted, it will be partially or entirely unreadable, which means that a text file will no longer be readable, an image file will present a random combination of colors if it opens at all and an archive will be impossible to unpack, and you risk losing your website content. Although the most frequently used server file systems feature various checks, they quite often fail to find a problem early enough or require an extensive time period to be able to check all files and the hosting server will not be functional in the meantime.

No Data Corruption & Data Integrity in Shared Website Hosting

We've resolved the issue of silent data corruption on all our shared website 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 that checks all files right away by using a checksum - a digital identifier that's unique for each file. When you upload content to your account, it'll be stored on several SSD drives and constantly synced between them for redundancy. ZFS regularly examines the checksum of all files and if any file is detected as corrupted, it is replaced instantly with a good copy from some other disk. As this happens in real time, there's no risk that a bad file may remain or may be duplicated on the other SSDs. ZFS needs lots of physical memory in order to perform the real-time checks and the benefit of our cloud website hosting platform is that we use multiple very powerful servers working together. In case you host your websites with us, your data will be undamaged no matter what.

No Data Corruption & Data Integrity in Semi-dedicated Hosting

We've avoided any chance of files getting corrupted silently due to the fact that the servers where your semi-dedicated hosting account will be created use a powerful file system known as ZFS. Its basic advantage over alternative file systems is that it uses a unique checksum for every single file - a digital fingerprint that's checked in real time. As we keep all content on numerous SSD drives, ZFS checks if the fingerprint of a file on one drive corresponds to the one on the remaining drives and the one it has stored. In case there's a mismatch, the damaged copy is replaced with a good one from one of the other drives and since this happens right away, there is no chance that a damaged copy could remain on our web hosting servers or that it can 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 can identify silently corrupted files. In contrast, ZFS won't crash after a power failure and the continual checksum monitoring makes a lenghty file system check obsolete.