Data corruption is the unintentional 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 because of this, a file can become partially or entirely corrupted, so it will no longer work properly as its bits will be scrambled or lost. An image file, for instance, will no longer present a real image, but a random mix of colors, an archive will be impossible to unpack since its content will be unreadable, etcetera. In case such an issue occurs and it is not identified by the system or by an administrator, the data will become corrupted silently and in case this happens on a drive which is a part of a RAID array where the data is synced between various different drives, the corrupted file shall be replicated on all the other drives and the harm will become long term. A large number of popular file systems either don't offer 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 problem on hosting servers where huge amounts of information are stored.
No Data Corruption & Data Integrity in Cloud Hosting
We've dealt with the problem of silent data corruption on all our cloud hosting
servers by using the cutting-edge Z file system, or ZFS. The latter is more advanced than other file systems as it is the only one in existence that checks all of the files immediately by using a checksum - a digital identifier that's unique for every single file. When you upload content to your account, it'll be stored on several SSD drives and frequently synced between them for redundancy. ZFS regularly analyzes the checksum of all files and in case any file is detected as corrupted, it's replaced right away with a good copy from some other disk. As this happens in real time, there is no risk that a corrupted file may remain or may be duplicated on the remaining SSDs. ZFS needs a lot of physical memory in order to perform the real-time checks and the advantage of our cloud hosting platform is that we employ multiple powerful servers working together. If you host your Internet sites with us, your information will be intact no matter what.
No Data Corruption & Data Integrity in Semi-dedicated Hosting
If you buy one of our semi-dedicated hosting
solutions, you will not have to worry about silent data corruption as we use ZFS - an advanced file system that keeps track of all of the files in real time. Whenever you upload a file to your hosting account, ZFS will assign a unique digital fingerprint to it - the so-called checksum. This file will be synced between multiple SSD drives for redundancy, so if a drive fails, the other ones will take control. ZFS compares the checksum of all copies on the different drives and if it detects a corrupted copy, it replaces it with a healthy one from a different drive. This happens right away, so there will be no threat for any part of your content at any time. By comparison, all of the other file systems perform checks only after a system breakdown, but since they do not use anything similar to the checksums that ZFS uses, they can't detect silently corrupted files, so a corrupted copy may be replicated on the rest of the drives as well and you may lose precious info. As this isn't the case with ZFS, we can guarantee the integrity of every single file you upload no matter what.