Data corruption is the damage of info because of various software or hardware failures. The moment a file is corrupted, it will no longer work accurately, so an app will not start or shall give errors, a text file will be partially or completely unreadable, an archive file will be impossible to open and then unpack, etc. Silent data corruption is the process of data getting harmed without any acknowledgement by the system or an admin, which makes it a significant problem for website hosting servers as fails are much more likely to occur on bigger hard drives where substantial volumes of information are placed. In case a drive is part of a RAID and the info on it is duplicated on other drives for redundancy, it's very likely that the bad file will be treated as a standard one and it will be copied on all drives, making the damage permanent. A lot of the file systems that operate on web servers these days often cannot detect corrupted files instantly or they need time-consuming system checks through which the server is not operational.
No Data Corruption & Data Integrity in Cloud Web Hosting
We have tackled the matter of silent data corruption on our cloud web hosting
servers by using the advanced Z file system, or ZFS. The latter is better than other file systems since it is the only one out there that checks all the files instantly by employing a checksum - a digital identifier which is unique for every single file. When you upload content to your account, it'll be stored on several SSD drives and continually synchronized between them for redundancy. ZFS constantly examines the checksum of all files and in the event that any file is detected as corrupted, it is replaced promptly with a good copy from another disk. As this happens in real time, there's no risk that a corrupted file may remain or may be copied on the rest of the SSDs. ZFS requires lots of physical memory in order to execute the real-time checks and the advantage of our cloud website hosting platform is that we work with multiple very 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 Servers
Your semi-dedicated server
account will be shielded from silent data corruption as all of our storage servers employ the state-of-the-art ZFS file system. What makes the aforementioned unique is that it uses checksums, or digital identifiers, in order to guarantee the integrity of each file. When you upload content to your account, it will be placed on several redundant drives employed in a RAID i.e. the files will be the same on all disks. All of the copies of a given file will feature the same checksum on all hard drives and ZFS will compare the checksums of the duplicates quickly, so if it detects a mismatch, which would indicate that one of the copies is corrupted, it will replace that file with a good copy from one of the other disks. Even if there is a sudden power loss, the data on the servers won't get corrupted and there will not be any need for a time-consuming system check that other file systems perform following some failure, extending the time needed for the server to get back online. ZFS is the sole file system which can really protect your content from silent data corruption.