Data corruption is the unintentional modification of a file or the losing of info which often occurs during reading or writing. The reason can be hardware or software malfunction, and consequently, a file could become partially or entirely corrupted, so it'll no longer function properly since its bits shall be scrambled or lost. An image file, for instance, will no longer present a true image, but a random mix of colors, an archive will be impossible to unpack for the reason that its content will be unreadable, etc. In case this kind of an issue occurs and it's not noticed by the system or by an admin, the data will get corrupted silently and if this happens on a drive that's a part of a RAID array where the info is synced between different drives, the corrupted file will be replicated on all other drives and the harm will be long term. Many widely used file systems either do not have real-time checks or don't have good ones that will detect an issue before the damage is done, so silent data corruption is a rather common matter on web hosting servers where substantial volumes of info are stored.

No Data Corruption & Data Integrity in Web Hosting

The integrity of the data which you upload to your new web hosting account shall be guaranteed by the ZFS file system which we use on our cloud platform. Most internet hosting service providers, including our company, use multiple hard disk drives to keep content and because the drives work in a RAID, the same information is synchronized between the drives at all times. If a file on a drive is damaged for reasons unknown, however, it is likely that it will be reproduced on the other drives because alternative file systems do not offer special checks for this. In contrast to them, ZFS uses a digital fingerprint, or a checksum, for each file. In case a file gets damaged, its checksum will not match what ZFS has as a record for it, and the damaged copy will be swapped with a good one from another disk drive. Due to the fact that this happens instantly, there's no risk for any of your files to ever be damaged.

No Data Corruption & Data Integrity in Semi-dedicated Servers

We've avoided any possibility of files getting damaged silently due to the fact that the servers where your semi-dedicated server account will be created take advantage of a powerful file system called ZFS. Its main advantage over other file systems is that it uses a unique checksum for every single file - a digital fingerprint which is checked in real time. Since we store all content on a number of SSD drives, ZFS checks if the fingerprint of a file on one drive matches the one on the remaining drives and the one it has stored. When there's a mismatch, the bad copy is replaced with a healthy one from one of the other drives and because this happens instantly, there's no chance that a damaged copy can remain on our hosting servers or that it could be duplicated to the other hard disks in the RAID. None of the other file systems use this type of checks and furthermore, even during a file system check following an unexpected power loss, none of them can detect silently corrupted files. In comparison, ZFS won't crash after a power loss and the constant checksum monitoring makes a time-consuming file system check obsolete.