The process of files getting corrupted owing to some hardware or software failure is known as data corruption and this is among the main problems which Internet hosting companies face as the larger a hard disk drive is and the more data is filed on it, the more likely it is for data to become corrupted. You will find different fail-safes, yet often the information gets damaged silently, so neither the file system, nor the administrators see anything. Consequently, a corrupted file will be treated as a good one and if the HDD is a part of a RAID, that particular file will be duplicated on all other disk drives. In theory, this is done for redundancy, but in reality the damage will get worse. When a file gets corrupted, it will be partly or completely unreadable, so a text file will no longer be readable, an image file will present a random combination of colors in case it opens at all and an archive will be impossible to unpack, so you risk sacrificing your website content. Although the most commonly used server file systems include various checks, they quite often fail to discover a problem early enough or require a long period of time to check all the files and the web server will not be operational for the time being.
No Data Corruption & Data Integrity in Cloud Hosting
We've resolved the matter of silent data corruption on all of our cloud hosting servers by using the modern Z file system, or ZFS. The latter is superior to other file systems because it is the only one on the market which checks all of the files in real time 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 regularly synchronized between them for redundancy. ZFS regularly analyzes the checksum of all files and if any file is detected as damaged, it is replaced quickly with a good copy from some other disk. As this happens in real time, there is no risk that a damaged file may remain or may be duplicated on the remaining SSDs. ZFS needs lots of physical memory in order to perform the real-time checks and the advantage of our cloud hosting platform is that we employ multiple very powerful servers working together. In case you host your Internet sites with us, your info will be undamaged no matter what.