StoreEver LTO SAS half height tape drives user guide

compressible will always limit the speed at which the drive can write/read data. You will
achieve no more than native rates with uncompressible data.
Examples of files that compress well are plain text files, spreadsheets; those that compress
poorly are those that are either compressed as part of their format (such as, JPEG photographic
files) or stored as compressed (such as, .ZIP files or .gz/.Z files on UNIX platforms).
Performance Assessment Tools 47