Data corruption is the unintentional change of a file or the loss of information that usually occurs during reading or writing. The reason can be hardware or software fail, and consequently, a file could become partially or completely corrupted, so it will no longer work properly as its bits shall be scrambled or missing. An image file, for instance, will no longer show an accurate image, but a random mix of colors, an archive will be impossible to unpack for the reason that its content will be unreadable, etc. If this kind of an issue occurs and it's not identified by the system or by an administrator, the data will get corrupted silently and in case this happens on a drive that's part of a RAID array where the data is synchronized between various drives, the corrupted file will be copied on all the other drives and the harm will become long term. Numerous frequently used file systems either don't have real-time checks or do not have high quality ones that will detect a problem before the damage is done, so silent data corruption is a common problem on internet hosting servers where substantial amounts of data are kept.
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 superior to other file systems because it is the only one out there which checks all files immediately by using a checksum - a digital identifier that is unique for each file. When you upload content to your account, it will be stored on several SSD drives and frequently synchronized between them for redundancy. ZFS constantly examines the checksum of all files and in the event that any file is detected as damaged, it is replaced instantly 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 rest of the SSDs. ZFS needs lots of physical memory to carry out the real-time checks and the benefit of our cloud web hosting platform is that we use multiple powerful servers working together. If you host your websites with us, your info will be intact no matter what.
No Data Corruption & Data Integrity in Semi-dedicated Servers
You will not experience any silent data corruption issues should you buy one of our semi-dedicated server
plans as the ZFS file system that we use on our cloud hosting platform uses checksums in order to make sure that all of your files are intact all of the time. 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. When it detects that a file is corrupted and its checksum is different from what it has to be, it replaces that file with a healthy copy without delay, avoiding any probability of the bad copy to be synchronized on the other hard drives. ZFS is the sole file system on the market which 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.