The process of files being damaged owing to some hardware or software failure is called data corruption and this is one of the main problems that hosting companies face because the larger a hard disk is and the more info is stored on it, the much more likely it is for data to be corrupted. You will find a couple of fail-safes, but often the information gets damaged silently, so neither the file system, nor the administrators see a thing. Because of this, a corrupted file will be handled as a standard one and if the hard disk drive is a part of a RAID, the file will be copied on all other drives. In principle, this is for redundancy, but in practice the damage will get worse. When some file gets corrupted, it will be partly or fully unreadable, so a text file will no longer be readable, an image file will show a random mix of colors if it opens at all and an archive will be impossible to unpack, so you risk losing your site 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 period of time to check all files and the web server will not be functional in the meantime.
No Data Corruption & Data Integrity in Website Hosting
We have tackled the problem of silent data corruption on all our website hosting
servers by using the cutting-edge Z file system, or ZFS. The latter is more advanced than other file systems as it is the only one in existence which checks all files immediately by using a checksum - a digital identifier which is unique for every single file. When you upload content to your account, it will be stored on several SSD drives and continually synced between them for redundancy. ZFS constantly compares the checksum of all files and if any file is detected as corrupted, it is replaced instantly with a good copy from another disk. As this happens in real time, there's no risk that a bad file may remain or may be copied on the other SSDs. ZFS requires plenty of physical memory to carry out the real-time checks and the advantage of our cloud web hosting platform is that we employ multiple powerful servers working together. In case you host your websites with us, your information will be undamaged no matter what.
No Data Corruption & Data Integrity in Semi-dedicated Servers
You won't have to deal with any silent data corruption issues whatsoever if you get one of our semi-dedicated server
solutions as the ZFS file system that we use on our cloud hosting platform uses checksums in order to ensure that all of the files are intact all the time. A checksum is a unique digital fingerprint that is assigned to each and every file kept on a server. Because we store all content on multiple drives at the same time, the same file uses the same checksum on all of the drives and what ZFS does is that it compares the checksums between the different drives right away. In case 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 right away, avoiding any possibility of the damaged copy to be synchronized on the remaining hard drives. ZFS is the sole file system out there that uses checksums, which makes it much more dependable than other file systems that cannot identify silent data corruption and copy bad files across hard drives.