Data corruption is the unintentional modification of a file or the losing of info which often occurs during reading or writing. The reason may be hardware or software fail, and as a result, a file can become partially or completely corrupted, so it'll no longer function as it should since its bits shall be scrambled or missing. 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 because its content will be unreadable, etcetera. If such an issue appears and it's not found by the system or by an admin, the data will be corrupted silently and in case this happens on a disk drive that's part of a RAID array where the info is synced between various different drives, the corrupted file will be duplicated on all of the other drives and the harm will be permanent. Many frequently used file systems either do not feature real-time checks or do not have high quality ones which will detect an issue before the damage is done, so silent data corruption is a common issue on web hosting servers where huge amounts of info are kept.
No Data Corruption & Data Integrity in Website Hosting
We've tackled the issue of silent data corruption on all our website hosting servers by using the cutting-edge Z file system, or ZFS. The latter is better than other file systems since it is the only one in existence which checks all files immediately by using a checksum - a digital identifier which is unique for each and every file. When you upload content to your account, it'll be stored on several SSD drives and frequently synchronized between them for redundancy. ZFS constantly analyzes the checksum of all files and when any file is detected as damaged, it is replaced promptly with a good copy from some other disk. As this happens in real time, there is no risk that a bad file may remain or may be duplicated on the rest of the SSDs. ZFS requires a lot of physical memory to carry out the real-time checks and the advantage of our cloud hosting platform is that we use multiple powerful servers working together. If you host your sites with us, your information will be intact no matter what.
No Data Corruption & Data Integrity in Semi-dedicated Hosting
In case you purchase one of our semi-dedicated hosting packages, you will not have to worry about silent file corruption as we use ZFS - an advanced file system which keeps track of all files in real time. Whenever you upload a file to your web hosting account, ZFS will assign a unique digital fingerprint to it - the so-called checksum. That file will be synchronized between several SSD drives for redundancy, so if one drive fails, the other ones will take control. ZFS compares the checksum of all of the copies on the different drives and in case it detects a damaged copy, it replaces it with a healthy one from another drive. This happens right away, so there will be no risk for any part of your content at any time. In comparison, all the other file systems execute checks only after a system failure, but since they do not use anything similar to the checksums which ZFS uses, they won't detect silently corrupted files, so a bad copy could be replicated on the other disks as well and you may lose critical info. As this is not the case with ZFS, we are able to warrant the integrity of each and every file you upload no matter what.