The process of files being damaged owing to some hardware or software failure is referred to 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 kept on it, the much more likely it is for data to get corrupted. There are a couple of fail-safes, but often the information is corrupted silently, so neither the particular file system, nor the admins detect anything. As a result, a damaged file will be treated as a good one and if the hard disk is a part of a RAID, that file will be duplicated on all other disk drives. Theoretically, this is for redundancy, but in practice the damage will be even worse. Once some file gets damaged, it will be partially or fully unreadable, which means that a text file will not be readable, an image file will show a random combination of colors in case it opens at all and an archive will be impossible to unpack, so you risk sacrificing your site content. Although the most widely used server file systems feature various checks, they are likely to fail to identify a problem early enough or require a vast amount of time in order to check all files and the web hosting server will not be operational in the meantime.
No Data Corruption & Data Integrity in Cloud Hosting
We have dealt with the issue of silent data corruption on all our cloud hosting
servers by using the advanced Z file system, or ZFS. The latter is better than other file systems since it is the only one out there which checks all of the files right away by using a checksum - a digital identifier which is 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 analyzes the checksum of all files and in case any file is detected as corrupted, it's replaced promptly with a good copy from some other disk. As this happens in real time, there is no risk that a corrupted file may remain or may be duplicated on the remaining SSDs. ZFS needs a lot of physical memory in order to perform the real-time checks and the advantage of our cloud hosting platform is that we employ multiple powerful servers working together. In case you host your websites with us, your information will be intact no matter what.
No Data Corruption & Data Integrity in Semi-dedicated Hosting
You will not need to deal with any silent data corruption issues in case you obtain one of our semi-dedicated hosting
solutions since the ZFS file system that we work with on our cloud hosting platform uses checksums in order to make sure that all of your files are undamaged all the time. A checksum is a unique digital fingerprint which is assigned to each and every file kept on a server. Due to the fact that we store all content on a number of drives simultaneously, 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 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 without delay, avoiding any possibility of the bad copy to be synchronized on the remaining hard disks. ZFS is the sole file system on the market that uses checksums, which makes it far superior to other file systems that are unable to identify silent data corruption and copy bad files across hard drives.