Clusters, formerly known as Squeeze, is a background file compressor, which uses the new HFS-compression technology in Snow Leopard to transparently compress the folders you configure it to process.
Clusters, formerly known as Squeeze, is a background file compressor, which uses the new HFScompression technology in Snow Leopard to transparently compress the folders you configure it to process. Mac OS will read those files normally, they will just take less disk space.
File compression HFS+ compression
xfce file-archiving disk-space hfs hfs-compression