id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
ital-3225	Truitt, Marc	Editorial: Reflections on What We Mean by “Forever”	2009-09-01	2	.pdf	application/pdf	1752	75	59	Wood of Sun gave a presentation at the 2008 PASIG Spring Meeting in which he estimated that the cost to supply power and cooling alone to maintain a peta- byte (1,000 TB) of disk-based digital content for a mere ten years would easily exceed $1 million.1 Refining his figures downward somewhat, Wood noted a few months later at the following PASIG meeting that for a 1 TB drive, the five- year estimated power and cooling for 2008–12 could be estimated at approximately $320, or $640,000 per petabyte over ten years, still a considerable sum.2 Add to this the costs of migration—consider that a modern spinning disk is generally thought to have a use- ful lifespan of about five years, and tape may have two or three decades—and the need regular integrity-checking of digital content for “bit-rot,” and you have the stuff of a sustainability nightmare. Can we meaningfully plan for the preservation of digital content over centuries given our poor track record over just the past few decades?	cache/ital-3225.pdf	txt/ital-3225.txt