Data corruption is the unintended modification of a file or the loss of info which often occurs during reading or writing. The reason may be hardware or software fail, and consequently, a file can become partially or fully corrupted, so it'll no longer work as it should since its bits shall be scrambled or missing. An image file, for instance, will no longer show an authentic image, but a random combination of colors, an archive will be impossible to unpack for the reason that its content will be unreadable, etcetera. When such a problem occurs and it isn't recognized by the system or by an administrator, the data will become corrupted silently and in case this happens on a drive that's 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 become long term. Many widespread file systems either do not offer 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 matter on hosting servers where substantial volumes of data are kept.
No Data Corruption & Data Integrity in Hosting
We've resolved the problem of silent data corruption on all of our 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 the files right away by employing a checksum - a digital identifier which is unique for each file. When you upload content to your account, it'll be stored on several SSD drives and constantly synchronized between them for redundancy. ZFS regularly compares the checksum of all files and in the event that any file is detected as damaged, it's replaced instantly with a good copy from another disk. As this happens in real time, there is no risk that a bad file may remain or may be duplicated on the other SSDs. ZFS needs lots of physical memory in order to execute the real-time checks and the benefit of our cloud web hosting platform is that we work with multiple very powerful servers working together. If 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 resistant to silent data corruption because all our storage servers employ the efficient ZFS file system. What makes the aforementioned unique is that it employs checksums, or digital identifiers, in order to guarantee the integrity of each and every file. When you upload content to your account, it'll be kept on a couple of redundant drives being employed in a RAID i.e. the files shall be the same across all drives. All of the copies of a specific file will feature the same checksum on all hard disks and ZFS will compare the checksums of the duplicates in real time, and if it detects a mismatch, that will indicate that one of the copies is damaged, it will substitute that file with a good copy from one of the other disks. Even if there's an unforeseen blackout, the data on the servers will not get corrupted and there won't be any need for a time-consuming system check which other file systems perform after some failure, lengthening the time needed for the server to return online. ZFS is the only file system that can truly protect your content from silent data corruption.