Data corruption is the accidental change of a file or the losing of info that usually occurs during reading or writing. The reason may be hardware or software failure, and as a consequence, a file can become partially or completely corrupted, so it'll no longer function as it should as its bits will be scrambled or missing. 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 for the reason that its content will be unreadable, etc. If this kind of a problem appears and it isn't noticed by the system or by an administrator, the data will get corrupted silently and in case this happens on a disk drive that is part of a RAID array where the data is synced between various drives, the corrupted file will be copied on all the other drives and the damage will be long term. A number of commonly used file systems either don't have real-time checks or don't have good ones which can detect an issue before the damage is done, so silent data corruption is a common matter on hosting servers where substantial volumes of info are stored.
No Data Corruption & Data Integrity in Shared Web Hosting
We've dealt with the problem of silent data corruption on all our shared web hosting servers by using the amazing Z file system, or ZFS. The latter is more advanced than other file systems as it is the only one out there that checks all of the files right away 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 corrupted, it's replaced promptly with a good copy from another disk. As this happens in real time, there is no risk that a damaged file may remain or may be copied on the other SSDs. ZFS requires plenty of physical memory to execute the real-time checks and the benefit of our cloud web hosting platform is that we work with multiple powerful servers working together. In case you host your sites with us, your information will be undamaged no matter what.
No Data Corruption & Data Integrity in Semi-dedicated Servers
Your semi-dedicated server account will be protected against silent data corruption since all of our storage servers employ the effective ZFS file system. What makes the latter unique is that it uses checksums, or digital identifiers, in order to verify the integrity of each and every file. When you upload content to your account, it'll be stored on a couple of redundant drives working in a RAID i.e. the files shall be the same on all disk drives. All the copies of a particular file will feature the same checksum on all hard disks and ZFS will compare the checksums of the duplicates quickly, so if it detects a mismatch, that will indicate that one of the copies is damaged, it'll swap that file with a healthy copy from one of the other drives. Even if there's a sudden blackout, the data on the servers will not become corrupted and there will not be any need for a time-consuming system check which other file systems perform following some malfunction, extending the time needed for the server to get back online. ZFS is the sole file system that can truly protect your content from silent data corruption.