Data corruption is the damage of data because of various software or hardware fails. When a file gets corrupted, it will no longer function as it should, so an app will not start or will give errors, a text file can be partially or entirely unreadable, an archive will be impossible to open and then unpack, etc. Silent data corruption is the process of data getting harmed without any identification by the system or an administrator, which makes it a significant problem for website hosting servers as fails are very likely to occur on larger in size hard drives where large 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 more than likely that the bad file will be treated as a healthy one and it'll be copied on all of the drives, making the harm permanent. Lots of the file systems which run on web servers nowadays often cannot recognize corrupted files immediately or they need time-consuming system checks during which the server is not functioning.

No Data Corruption & Data Integrity in Cloud Web Hosting

We've resolved the matter of silent data corruption on our cloud web hosting servers by using the modern 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 files instantly by employing a checksum - a digital identifier that is unique for each file. When you upload content to your account, it'll be stored on several SSD drives and regularly synchronized between them for redundancy. ZFS regularly analyzes the checksum of all files and in the event that any file is detected as damaged, it's replaced quickly with a good copy from some other disk. As this happens in real time, there's no risk that a damaged file may remain or may be copied on the remaining SSDs. ZFS needs plenty of physical memory in order to carry out the real-time checks and the advantage of our cloud web hosting platform is that we use multiple powerful servers working together. If you host your sites with us, your info will be undamaged no matter what.

No Data Corruption & Data Integrity in Semi-dedicated Hosting

We have avoided any probability of files getting corrupted silently as the servers where your semi-dedicated hosting account will be created use a powerful file system known as ZFS. Its basic advantage over various other file systems is that it uses a unique checksum for each and every file - a digital fingerprint that is checked in real time. As we keep all content on multiple SSD drives, ZFS checks if the fingerprint of a file on one drive corresponds to the one on the rest of the drives and the one it has saved. If there's a mismatch, the bad copy is replaced with a good one from one of the other drives and since it happens instantly, there's no chance that a damaged copy could remain on our web servers or that it can be duplicated to the other hard drives in the RAID. None of the other file systems include such checks and furthermore, even during a file system check after a sudden power failure, none of them will identify silently corrupted files. In comparison, ZFS won't crash after a power failure and the regular checksum monitoring makes a time-consuming file system check unneeded.