Compression is the process where data is stored using less disk space. The following compression algorithms are available:
gzip - standard UNIX compression.
gzip-N - selects a specific gzip level. gzip-1 provides the fastest gzip compression. gzip-9 provides the best data compression. gzip-6 is the default.
lz4 - provides better compression with lower CPU overhead
lzjb - optimized for performance while providing decent compression
zle - zero length encoding is useful for datasets with large blocks of zeros
You can choose a specific compression algorithm by setting the compression ZFS property. To use the LZ4 algorithm, use a command like the following:
$ zfs set compress=lz4 pool/fs