The process of files getting damaged due to some hardware or software failure is called data corruption and this is among the main problems which hosting companies face as the larger a hard drive is and the more data is kept on it, the much more likely it is for data to become corrupted. There are various fail-safes, but often the information is corrupted silently, so neither the file system, nor the admins see anything. Thus, a damaged file will be treated as a regular one and if the HDD is part of a RAID, the file will be duplicated on all other drives. In theory, this is for redundancy, but in reality the damage will be even worse. When a given file gets corrupted, it will be partly or completely unreadable, which means that a text file will no longer be readable, an image file will display a random mix of colors if it opens at all and an archive will be impossible to unpack, so you risk losing your content. Although the most popular server file systems have various checks, they frequently fail to discover a problem early enough or require a long period of time to check all files and the server will not be functional in the meantime.
No Data Corruption & Data Integrity in Cloud Hosting
We've tackled the issue of silent data corruption on our cloud hosting
servers by using the hi-tech Z file system, or ZFS. The latter is superior to other file systems as it is the only one on the market that checks all of the files immediately 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 regularly synchronized between them for redundancy. ZFS regularly examines the checksum of all files and in case any file is detected as corrupted, it's replaced immediately with a good copy from some other 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 needs a lot of physical memory to perform the real-time checks and the advantage of our cloud website hosting platform is that we take advantage of multiple powerful servers working together. If you host your Internet sites with us, your data 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 of our storage servers make use of the efficient ZFS file system. What makes the latter unique is that it uses checksums, or digital identifiers, to verify the integrity of every single file. When you upload content to your account, it'll be saved on several redundant drives employed in a RAID i.e. the files shall be the same across all disk drives. All copies of a specific file will have the same checksum on all hard drives and ZFS will compare the checksums of the duplicates right away, and if it detects a mismatch, which will indicate that one of the copies is damaged, it will substitute that file with a healthy copy from one of the other disks. Even if there is an unexpected blackout, the data on the servers won't get corrupted and there won't be any need for a time-consuming system check that other file systems perform following some failure, lengthening the time needed for the server to go back online. ZFS is the file system that can really protect your content from silent data corruption.