The process of files being damaged owing to some hardware or software failure is known as data corruption and this is one of the main problems that Internet hosting companies face because the larger a hard disk drive is and the more info is placed on it, the more likely it is for data to be corrupted. There are different fail-safes, but often the info gets corrupted silently, so neither the file system, nor the admins detect anything. Consequently, a damaged file will be treated as a regular one and if the hard drive is a part of a RAID, that file will be copied on all other disk drives. In principle, this is for redundancy, but in practice the damage will be worse. The moment a file gets damaged, it will be partly or fully unreadable, therefore a text file will no longer be readable, an image file will display a random combination of colors if it opens at all and an archive shall be impossible to unpack, so you risk losing your website content. Although the most popular server file systems feature various checks, they are likely to fail to discover a problem early enough or require a vast period of time to be able to check all files and the web server will not be operational for the time being.
No Data Corruption & Data Integrity in Hosting
In case you host your websites in a hosting account with our company, you won't have to worry about any of your data ever getting corrupted. We can guarantee that since our cloud hosting platform employs the reliable ZFS file system. The latter is the only file system that works with checksums, or unique digital fingerprints, for each and every file. All the data that you upload will be kept in a RAID i.e. simultaneously on a large number of SSD drives. All the file systems synchronize the files between the separate drives using this type of a setup, but there is no real guarantee that a file will not be corrupted. This could occur during the writing process on each drive and afterwards a bad copy can be copied on all other drives. What is different on our platform is that ZFS examines the checksums of all files on all the drives instantly and in case a corrupted file is found, it's swapped with a good copy with the correct checksum from some other drive. By doing this, your info will continue to be unharmed no matter what, even if an entire drive fails.