Data corruption is the damage of data because of various hardware or software fails. The moment 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 will be partially or entirely 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 administrator, which makes it a serious problem for hosting servers as problems are more likely to occur on larger in size hard disk drives where considerable volumes of information are stored. When a drive is part of a RAID and the data on it is replicated on other drives for redundancy, it's more than likely that the damaged file will be treated as a standard one and will be copied on all of the drives, making the damage permanent. Lots of the file systems which run on web servers these days often cannot identify corrupted files in real time or they need time-consuming system checks during which the server is not working.
No Data Corruption & Data Integrity in Hosting
In case you host your sites in a hosting
account from our firm, you do not need to worry about your data ever getting damaged. We can ensure that because our cloud hosting platform uses the leading-edge ZFS file system. The aforementioned is the only file system which uses checksums, or unique digital fingerprints, for each file. All of the data that you upload will be saved in a RAID i.e. simultaneously on numerous SSDs. A lot of file systems synchronize the files between the separate drives with such a setup, but there's no real guarantee that a file will not get corrupted. This could occur during the writing process on each drive and afterwards a corrupted copy may be copied on all other drives. What is different on our platform is the fact that ZFS examines the checksums of all files on all of the drives live and in case a corrupted file is identified, it's replaced with a good copy with the correct checksum from another drive. By doing this, your data will remain unharmed no matter what, even if a whole drive fails.
No Data Corruption & Data Integrity in Semi-dedicated Servers
In case you obtain one of our semi-dedicated server
solutions, you will not have to worry about silent data corruption since we use ZFS - a high level file system which checks all of the files in real time. Each time you upload a file to your account, ZFS will assign a unique digital fingerprint to it - the so-called checksum. This file will be synchronized between a number of SSD drives for redundancy, so if a drive fails, the other ones will take over. ZFS compares the checksum of all copies on the different drives and in case it detects a corrupted copy, it replaces it with a healthy one from a different drive. This happens right away, so there will be no risk for any part of your content at any time. By comparison, all of the other file systems execute checks after a system breakdown, but since they don't use anything similar to the checksums that ZFS uses, they are unable to detect silently corrupted files, so a corrupted copy may be replicated on the rest of the drives as well and you may lose crucial information. Because this isn't the case with ZFS, we guarantee the integrity of each and every file you upload no matter what.