Data corruption is the unintended change of a file or the losing of information which often occurs during reading or writing. The reason could be hardware or software fail, and for that reason, a file can become partially or entirely corrupted, so it'll no longer function properly as its bits will be scrambled or lost. An image file, for example, will no longer show a real image, but a random mix of colors, an archive will be impossible to unpack because its content will be unreadable, and so on. In case such an issue occurs and it's not recognized by the system or by an administrator, the data will get corrupted silently and when this happens on a drive which is part of a RAID array where the info is synchronized between different drives, the corrupted file will be duplicated on all other drives and the damage will be long term. Many commonly used file systems either don't feature real-time checks or do not have high quality ones that can detect a problem before the damage is done, so silent data corruption is a very common problem on hosting servers where huge volumes of data are kept.
No Data Corruption & Data Integrity in Hosting
We've tackled the issue of silent data corruption on all of our hosting servers by using the hi-tech Z file system, or ZFS. The latter is superior to other file systems as it is the only one in existence that checks all the files instantly by using a checksum - a digital identifier which is unique for each and every 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 compares the checksum of all files and in case any file is detected as corrupted, it is replaced immediately with a good copy from some other disk. As this happens in real time, there's no risk that a bad file may remain or may be duplicated on the remaining SSDs. ZFS requires lots of physical memory to carry out the real-time checks and the benefit of our cloud website hosting platform is that we take advantage of multiple very powerful servers working together. In case you host your websites with us, your data will be intact no matter what.
No Data Corruption & Data Integrity in Semi-dedicated Hosting
You will not experience any silent data corruption issues whatsoever if you obtain one of our semi-dedicated hosting plans because the ZFS file system that we take advantage of on our cloud hosting platform uses checksums to make sure that all files are intact all of the time. A checksum is a unique digital fingerprint which is given to each and every file saved on a server. Due to the fact that we store all content on multiple drives at the same time, the same file has the same checksum on all the drives and what ZFS does is that it compares the checksums between the different drives right away. 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 probability of the corrupted copy to be synchronized on the remaining hard drives. ZFS is the sole file system available on the market that uses checksums, which makes it much more reliable than other file systems that are unable to detect silent data corruption and duplicate bad files across drives.