What Does High Density (HAD) Mean?
“High density” in IT can be used in various ways. One way is in describing a “high-density disk.” The high-density disk is a somewhat obsolete idea in IT, since newer storage technologies have led engineers and others to use “area density” or “surface density” as a metric, rather than labeling storage media as high density.
Techopedia Explains High Density (HAD)
In the era of the floppy disk, a high-density disk was one that held more data than the average disk. Typically, a high-density 5 ¼" PC disk held just over one megabyte of data. A high-density 3 ½" disk held nearly 1.5 MB.
