The process of files being damaged because of some hardware or software failure is referred to as data corruption and this is one of the main problems that Internet hosting companies face since the larger a hard drive is and the more info is filed on it, the much more likely it is for data to get corrupted. You can find a couple of fail-safes, but often the information becomes damaged silently, so neither the file system, nor the administrators see a thing. Thus, a damaged file will be handled as a good one and if the hard drive is a part of a RAID, that file will be duplicated on all other drives. In theory, this is for redundancy, but in reality the damage will get worse. Once a given file gets corrupted, it will be partially or fully unreadable, so a text file will no longer be readable, an image file will present a random mix of colors in case it opens at all and an archive shall be impossible to unpack, so you risk sacrificing your content. Although the most well-known server file systems include various checks, they frequently fail to discover some problem early enough or require an extensive amount of time to check all of the files and the web server will not be functional for the time being.
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 leading-edge Z file system, or ZFS. The latter is better than other file systems since it is the only one in existence that checks all files right away by using a checksum - a digital identifier which is unique for each file. When you upload content to your account, it will be stored on several SSD drives and constantly synchronized between them for redundancy. ZFS regularly examines the checksum of all files and in case any file is detected as damaged, it's 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 rest of the SSDs. ZFS needs plenty of physical memory to perform the real-time checks and the advantage of our cloud web hosting platform is that we employ multiple very powerful servers working together. If you host your websites with us, your information will be intact no matter what.
No Data Corruption & Data Integrity in Semi-dedicated Servers
You won't need to deal with any kind of silent data corruption issues whatsoever should you obtain one of our semi-dedicated server
plans since the ZFS file system that we work with on our cloud hosting platform uses checksums to guarantee that all files are undamaged at all times. 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 multiple drives at the same time, the same file has 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 has to be, it replaces that file with a healthy copy without delay, avoiding any possibility of the damaged copy to be synchronized on the other hard disks. ZFS is the only file system out there that uses checksums, which makes it far superior to other file systems which cannot identify silent data corruption and copy bad files across hard drives.