There are a number of physical storage mediums available in todays computing world. To name a few: hard disk, flash drive, DVD, and tape. These mediums might have different file allocation methods and size constraints. Discuss the various mediums and associated methods and constraints. Additionally, for each medium, discuss the concept of fragmentation, why it occurs, what devices are more susceptible to it, if there are file systems that are able to avoid it, and how to prevent and fix fragmented space. The minimum concepts to cover and explain in the paper are contiguous and non-contiguous, allocation table, indexing, tape allocation, disk allocation, storage allocation, partitions, volumes, fragmentation, and defragmentation. Include a comparison table for the different mediums and associated methods and constraints.