Data corruption is the damage of info due to various software or hardware failures. After a file gets damaged, it will no longer function accurately, so an application will not start or will give errors, a text file shall 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 identification by the system or an administrator, that makes it a serious problem for website hosting servers as failures are much more likely to occur on bigger hard drives where significant volumes of info are located. In case a drive is a part of a RAID and the information on it is replicated on other drives for redundancy, it is likely that the damaged file will be treated as a regular one and it will be copied on all drives, making the harm permanent. A huge number of the file systems which run on web servers these days often cannot find corrupted files immediately or they need time-consuming system checks through which the server isn't operational.
No Data Corruption & Data Integrity in Shared Web Hosting
We've resolved the problem of silent data corruption on our shared web hosting
servers by using the hi-tech Z file system, or ZFS. The latter is more advanced than other file systems as it is the only one in existence which checks all the files immediately by using a checksum - a digital identifier that's unique for each file. When you upload content to your account, it will be stored on several SSD drives and continually synchronized between them for redundancy. ZFS constantly compares the checksum of all files and in case any file is detected as damaged, it's replaced immediately with a good copy from another disk. As this happens in real time, there's no risk that a damaged file may remain or may be copied on the rest of the SSDs. ZFS requires a lot of physical memory in order to carry out the real-time checks and the advantage of our cloud website hosting platform is that we employ multiple powerful servers working together. In case you host your websites with us, your data will be undamaged no matter what.
No Data Corruption & Data Integrity in Semi-dedicated Hosting
You will not have to deal with any silent data corruption issues in case you buy one of our semi-dedicated hosting
plans due to the fact that the ZFS file system that we work with on our cloud hosting platform uses checksums to guarantee that all of your files are intact at all times. A checksum is a unique digital fingerprint that is given to each and every file stored on a server. Because we store all content on a number of drives at the same time, the same file has the same checksum on all of the drives and what ZFS does is that it compares the checksums between the different drives in real time. If it detects that a file is corrupted and its checksum is different from what it should be, it replaces that file with a healthy copy right away, avoiding any chance of the bad copy to be synchronized on the other hard drives. ZFS is the sole file system available on the market which uses checksums, which makes it much more reliable than other file systems which are not able to identify silent data corruption and copy bad files across hard drives.