Data corruption is the damage of data due to various software or hardware failures. When a file is damaged, it will no longer function as it should, so an app will not start or will give errors, a text file could be partially or fully unreadable, an archive file will be impossible to open and then unpack, etc. Silent data corruption is the process of information getting damaged without any identification by the system or an admin, which makes it a significant problem for website hosting servers as failures are much more likely to happen on bigger hard disks where considerable volumes of info are located. When a drive is part of a RAID and the data on it is replicated on other drives for redundancy, it is very likely that the damaged file will be treated as a healthy one and will be copied on all the drives, making the harm permanent. A lot of the file systems that operate on web servers today often are not able to recognize corrupted files immediately or they need time-consuming system checks through which the server isn't working.
No Data Corruption & Data Integrity in Cloud Hosting
In case you host your sites in a cloud hosting
account with our company, you won't have to worry about your data ever getting corrupted. We can ensure that because our cloud hosting platform works with the advanced ZFS file system. The latter is the only file system which uses checksums, or unique digital fingerprints, for each and every file. Any kind of data that you upload will be saved in a RAID i.e. simultaneously on many SSDs. All of the file systems synchronize the files between the different drives using such a setup, but there's no real warranty that a file won't get corrupted. This could occur during the writing process on any drive and afterwards a corrupted copy can be copied on the rest of the drives. What makes the difference on our platform is the fact that ZFS compares the checksums of all files on all drives instantly and in the event that a corrupted file is discovered, it's swapped with a good copy with the correct checksum from another drive. In this way, your information will remain unharmed no matter what, even if an entire drive fails.
No Data Corruption & Data Integrity in Semi-dedicated Servers
We have avoided any possibility of files getting corrupted silently due to the fact that the servers where your semi-dedicated server
account will be created employ a powerful file system known as ZFS. Its key advantage over other file systems is that it uses a unique checksum for each and every file - a digital fingerprint that's checked in real time. As we save all content on multiple SSD drives, ZFS checks whether the fingerprint of a file on one drive matches the one on the other drives and the one it has saved. In the event that there's a mismatch, the corrupted copy is replaced with a good one from one of the other drives and since it happens in real time, there's no chance that a corrupted copy can remain on our website hosting servers or that it could be duplicated to the other hard drives in the RAID. None of the other file systems work with this kind of checks and furthermore, even during a file system check after a sudden blackout, none of them will detect silently corrupted files. In contrast, ZFS doesn't crash after a blackout and the constant checksum monitoring makes a time-consuming file system check unnecessary.