Data corruption is the damage of information caused by various software or hardware problems. The moment a file is damaged, it will no longer function accurately, so an app will not start or shall give errors, a text file can be partially or fully unreadable, an archive file will be impossible to open then unpack, etc. Silent data corruption is the process of data getting damaged without any acknowledgement by the system or an admin, which makes it a serious problem for web hosting servers as problems are much more likely to occur on bigger hard disk drives where large volumes of info are located. In case a drive is part of a RAID and the information on it is replicated on other drives for redundancy, it is very likely that the damaged file will be treated as a regular one and it'll be duplicated on all the drives, making the damage permanent. A lot of the file systems that run on web servers these days often are not able to identify corrupted files instantly or they need time-consuming system checks through which the server isn't working.

No Data Corruption & Data Integrity in Cloud Hosting

We've dealt with the issue of silent data corruption on our cloud hosting servers by using the leading-edge Z file system, or ZFS. The latter is better than other file systems since it is the only one on the market which checks all the files right away by employing a checksum - a digital identifier that's unique for every single file. When you upload content to your account, it will be stored on several SSD drives and constantly synced between them for redundancy. ZFS constantly compares the checksum of all files and when any file is detected as damaged, it is replaced promptly with a good copy from another disk. As this happens in real time, there is no risk that a bad file may remain or may be copied on the remaining SSDs. ZFS requires a lot of physical memory in order to perform the real-time checks and the benefit of our cloud hosting platform is that we take advantage of multiple very powerful servers working together. If you host your Internet sites with us, your information will be intact no matter what.