Definition

The physical size (P-size) of a file refers to the minimum number of whole clusters needed to store the file.

Introduction

Physical size shows how many whole clusters are used to store a file. Logical size refers to the actual size of the file. The difference between physical size and logical size is called file slack.

Related terms

Data cluster

File slack

Logical size

References

Wikipedia contributors, "Data cluster," Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/w/index.php?title=Data_cluster&oldid=784026338 (accessed November 28, 2018).