A file delta merely expresses the difference between two files. 一个文件的增量仅仅表达了两个文件的不同。
There should be no allocation minimum, and growth of a provisioned volume should not have to be done in certain size increments. 产品不应该在最小需求的时候进行容量分配,但如果未能达到一定的增量也不应该增加卷的增量分配。