The process of files being damaged resulting from some hardware or software failure is called data corruption and this is among 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 become corrupted. There're a couple of fail-safes, still often the data is damaged silently, so neither the particular file system, nor the admins see a thing. As a result, a corrupted file will be handled as a good one and if the hard drive is part of a RAID, that particular file will be duplicated on all other disk drives. Theoretically, this is done for redundancy, but in reality the damage will get even worse. The moment a file gets damaged, it will be partly or completely unreadable, so a text file will no longer be readable, an image file will show a random mix of colors in case it opens at all and an archive will be impossible to unpack, and you risk sacrificing your site content. Although the most widely used server file systems feature various checks, they quite often fail to find a problem early enough or require an extensive amount of time in order to check all the files and the server will not be functional in the meantime.
No Data Corruption & Data Integrity in Shared Hosting
The integrity of the data that you upload to your new shared hosting
account shall be ensured by the ZFS file system which we use on our cloud platform. Most of the internet hosting service providers, like our firm, use multiple hard drives to keep content and because the drives work in a RAID, the exact same data is synchronized between the drives all of the time. In case a file on a drive becomes damaged for whatever reason, yet, it's very likely that it will be duplicated on the other drives since other file systems don't have special checks for that. In contrast to them, ZFS applies a digital fingerprint, or a checksum, for each file. In case a file gets damaged, its checksum will not match what ZFS has as a record for it, so the bad copy shall be swapped with a good one from a different hard disk. As this happens right away, there's no risk for any of your files to ever get corrupted.
No Data Corruption & Data Integrity in Semi-dedicated Hosting
Your semi-dedicated hosting
account will be resistant to silent data corruption because all our storage servers make use of the state-of-the-art ZFS file system. What makes the latter unique is that it employs checksums, or digital identifiers, in order to ensure the integrity of every single file. When you upload content to your account, it'll be saved on a couple of redundant drives operating in a RAID i.e. the files shall be the same on all drives. All copies of a given file will have the same checksum on all hard disks and ZFS will compare the checksums of the copies right away, so if it finds a mismatch, which will indicate that one of the copies is damaged, it will replace that file with a healthy copy from one of the other disks. Even if there is an unforeseen power loss, the data on the servers won't be corrupted and there will not be any need for a time-consuming system check that other file systems perform after some malfunction, extending the time needed for the server to go back online. ZFS is the sole file system which can really protect your content from silent data corruption.