The ability to transfer in one I/O operation data from discontiguous pages in memory to contiguous blocks on disk, or data from contiguous blocks on disk to discontiguous pages in memory.; 一種傳送數(shù)據(jù)的能力,即在輸入輸出操作中將數(shù)據(jù)從存儲器中不連續(xù)的頁面上傳送到磁盤 的連續(xù)塊中,或將數(shù)據(jù)從磁盤的連續(xù)塊上傳送到存儲器中不連續(xù)頁面上。