Data corruption is the accidental change of a file or the loss of information which often occurs during reading or writing. The reason could be hardware or software malfunction, and because of this, a file can become partially or fully corrupted, so it'll no longer function correctly since its bits shall be scrambled or lost. An image file, for example, will no longer present an actual image, but a random mix of colors, an archive will be impossible to unpack as its content will be unreadable, etc. In the event that this kind of an issue occurs and it's not noticed by the system or by an administrator, the data will get corrupted silently and if this happens on a disk drive which is part of a RAID array where the info is synchronized between various drives, the corrupted file will be reproduced on all of the other drives and the damage will be long term. A large number of widely used file systems either don't offer real-time checks or don't have high quality ones which can detect a problem before the damage is done, so silent data corruption is a very common issue on internet hosting servers where substantial amounts of info are kept.
No Data Corruption & Data Integrity in Shared Website Hosting
We have dealt with the issue of silent data corruption on all our shared website hosting servers by using the leading-edge Z file system, or ZFS. The latter is more advanced than other file systems because it is the only one in existence that checks all the files immediately by using a checksum - a digital identifier that is unique for each file. When you upload content to your account, it'll be stored on several SSD drives and constantly synchronized between them for redundancy. ZFS constantly examines the checksum of all files and in case any file is detected as damaged, it's replaced quickly with a good copy from another disk. As this happens in real time, there is no risk that a corrupted file may remain or may be duplicated on the rest of the SSDs. ZFS needs lots of physical memory in order to carry out the real-time checks and the advantage of our cloud hosting platform is that we take advantage of multiple very powerful servers working together. In case you host your websites with us, your information will be undamaged no matter what.