Data compression is the compacting of information by reducing the number of bits that are stored or transmitted. Consequently, the compressed data will require less disk space than the original one, so much more content could be stored on identical amount of space. You can find many different compression algorithms that function in different ways and with several of them just the redundant bits are erased, which means that once the info is uncompressed, there's no loss of quality. Others erase unneeded bits, but uncompressing the data following that will lead to reduced quality compared to the original. Compressing and uncompressing content requires a large amount of system resources, in particular CPU processing time, therefore every hosting platform which uses compression in real time needs to have sufficient power to support that feature. An example how info can be compressed is to replace a binary code such as 111111 with 6x1 i.e. "remembering" what number of sequential 1s or 0s there should be instead of keeping the entire code.
Data Compression in Hosting
The ZFS file system that operates on our cloud web hosting platform employs a compression algorithm named LZ4. The aforementioned is substantially faster and better than every other algorithm on the market, especially for compressing and uncompressing non-binary data i.e. web content. LZ4 even uncompresses data faster than it is read from a hard disk, which improves the overall performance of websites hosted on ZFS-based platforms. Since the algorithm compresses data quite well and it does that quickly, we are able to generate several backup copies of all the content stored in the hosting accounts on our servers on a daily basis. Both your content and its backups will require less space and since both ZFS and LZ4 work very quickly, the backup generation will not affect the performance of the web servers where your content will be kept.
Data Compression in Semi-dedicated Servers
The ZFS file system that runs on the cloud platform where your semi-dedicated server account will be created uses a powerful compression algorithm called LZ4. It's one of the best algorithms out there and certainly the best one when it comes to compressing and uncompressing web content, as its ratio is very high and it'll uncompress data much faster than the same data can be read from a hard disk drive if it were uncompressed. That way, using LZ4 will boost any Internet site that runs on a platform where this algorithm is present. This high performance requires plenty of CPU processing time, that is provided by the great number of clusters working together as part of our platform. Furthermore, LZ4 enables us to generate several backup copies of your content every day and keep them for one month as they will take a smaller amount of space than typical backups and will be created considerably quicker without loading the servers.