Data Corruption

: Hosting Terminology; Disk Space; Hepsia Control Panel; Hosted Domains; InnoDB; Integrated Ticketing System; Email Accounts; Memcached; Node.js; Subdomains; Support; Data Traffic; Varnish; VPN Traffic; Assisted Website Migration; Weekly Backup; Order

Data corruption is the accidental modification of a file or the losing of info which usually occurs during reading or writing. The reason can be hardware or software failure, and because of this, a file may become partially or completely corrupted, so it'll no longer work correctly because its bits shall be scrambled or lacking. An image file, for example, will no longer display 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 this kind of an issue occurs and it's not found by the system or by an admin, the data will be corrupted silently and when this happens on a disk drive that's a part of a RAID array where the info is synced between different drives, the corrupted file shall be reproduced on all other drives and the harm will become permanent. Numerous popular file systems either don't feature real-time checks or don't have high quality ones which will detect a problem before the damage is done, so silent data corruption is a rather common matter on internet hosting servers where large volumes of data are kept.

No Data Corruption & Data Integrity in Cloud Web Hosting

The integrity of the data which you upload to your new cloud web hosting account will be guaranteed by the ZFS file system which we make use of on our cloud platform. Most of the web hosting providers, including our firm, use multiple HDDs to store content and since the drives work in a RAID, the same info is synchronized between the drives all of the time. In case a file on a drive becomes corrupted for some reason, however, it is more than likely that it will be duplicated on the other drives because other file systems do not feature special checks for that. In contrast to them, ZFS uses a digital fingerprint, or a checksum, for every single file. In the event that a file gets corrupted, its checksum will not match what ZFS has as a record for it, so the bad copy will be replaced with a good one from another disk drive. Because this happens immediately, there is no possibility for any of your files to ever be damaged.

No Data Corruption & Data Integrity in Semi-dedicated Hosting

We've avoided any probability of files getting damaged silently since the servers where your semi-dedicated hosting account will be created use a powerful file system known as ZFS. Its main advantage over alternative file systems is that it uses a unique checksum for each and every file - a digital fingerprint which is checked in real time. As we store all content on multiple SSD drives, ZFS checks if the fingerprint of a file on one drive corresponds to the one on the rest of the drives and the one it has saved. When there is a mismatch, the damaged copy is replaced with a good one from one of the other drives and considering that this happens instantly, there is no chance that a damaged copy can remain on our web servers or that it could be copied to the other hard disks in the RAID. None of the other file systems use this kind of checks and furthermore, even during a file system check right after an unexpected power failure, none of them can discover silently corrupted files. In contrast, ZFS doesn't crash after an electrical power failure and the constant checksum monitoring makes a lenghty file system check obsolete.