Digital Storage

A while ago, my company deployed a backup service for employees' company laptops.  This got our team talking about the various methods that we each had used over the years to back up our data.  One of my colleagues had backed up his machine to SuperDisks --I'd never heard of them either-- and then stored them in a bank safe deposit box.

Since individuals routinely backup 1TB or more of data now, I thought it would be interesting to see what it would take to backup 1TB of data using various media I have used in the past 25 years or so.  Here's what I found:

Disk Type	Capacity	# to store 1TB
5.25 in"	360 KB	2,982,617
3.5 in" HD	1.44 MB	728,178
8 in"	6.2 MB	169,126
SuperDisk - LS120	120 MB	8,739
SuperDisk - LS240	240 MB	4,370
CD-ROM	650 MB	1,614
Zip Disk	750 MB	1,399
Jax Disk	1 GB	1,024
DVD (2-Layer)	9.4 GB	109