The process of files getting damaged as a consequence of some hardware or software failure is called data corruption and this is among the main problems that web hosting companies face as the larger a hard disk is and the more data is stored on it, the more likely it is for data to become corrupted. You will find several fail-safes, yet often the data is corrupted silently, so neither the file system, nor the administrators notice a thing. Because of this, a bad file will be treated as a standard one and if the hard disk is part of a RAID, the file will be duplicated on all other disk drives. Theoretically, this is for redundancy, but in reality the damage will get worse. The moment a given file gets damaged, it will be partially or entirely unreadable, so 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 shall be impossible to unpack, and you risk losing your content. Although the most frequently used server file systems include various checks, they frequently fail to find a problem early enough or require a long time period to be able to check all of the files and the web server will not be functional in the meantime.
No Data Corruption & Data Integrity in Cloud Hosting
The integrity of the data which you upload to your new cloud hosting account will be guaranteed by the ZFS file system which we use on our cloud platform. The majority of hosting suppliers, including our company, use multiple hard disks to keep content and since the drives work in a RAID, identical information is synchronized between the drives at all times. In case a file on a drive gets damaged for whatever reason, however, it's more than likely that it will be copied on the other drives because other file systems don't feature special checks for this. In contrast to them, ZFS uses a digital fingerprint, or a checksum, for each file. If a file gets damaged, its checksum will not match what ZFS has as a record for it, which means that the bad copy will be swapped with a good one from another drive. Since this happens in real time, there is no possibility for any of your files to ever be corrupted.