The process of files being damaged as a result of some hardware or software failure is referred to as data corruption and this is one of the main problems which web hosting companies face since the larger a hard drive is and the more information is placed on it, the much more likely it is for data to become corrupted. You'll find a couple of fail-safes, yet often the info becomes corrupted silently, so neither the file system, nor the admins detect a thing. 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 particular file will be copied on all other disk drives. In theory, this is for redundancy, but in practice the damage will get even worse. The moment a given file gets corrupted, it will be partially or fully unreadable, therefore a text file will not be readable, an image file will show a random blend of colors if it opens at all and an archive will be impossible to unpack, and you risk sacrificing your site content. Although the most well-known server file systems feature various checks, they frequently fail to detect some problem early enough or require a long 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 Web Hosting
We have dealt with the matter of silent data corruption on our cloud web hosting
servers by using the hi-tech Z file system, or ZFS. The latter is better than other file systems since it is the only one out there which checks all the files instantly by using a checksum - a digital identifier which is unique for every single file. When you upload content to your account, it'll be stored on several SSD drives and regularly synced between them for redundancy. ZFS regularly analyzes the checksum of all files and when any file is detected as corrupted, it is replaced right away 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 copied on the other SSDs. ZFS requires plenty of physical memory in order to perform the real-time checks and the advantage of our cloud website hosting platform is that we work with 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 Hosting
Your semi-dedicated hosting
account will be resistant to silent data corruption as all of our storage servers employ the reliable ZFS file system. What makes the latter unique is that it employs checksums, or digital identifiers, so as to ensure the integrity of every single file. When you upload content to your account, it'll be kept on several redundant drives operating in a RAID i.e. the files will be the same across all drives. All the copies of a particular file will feature the same checksum on all drives and ZFS will compare the checksums of the copies in real time, so if it discovers a mismatch, that would indicate that one of the copies is damaged, it will swap that file with a healthy copy from one of the other drives. Even if there's an unexpected blackout, the data on the servers won't get corrupted and there won't be any need for a time-consuming system check that other file systems perform after some breakdown, prolonging the time needed for the server to return online. ZFS is the only file system that can really protect your content from silent data corruption.