Fenella France, chief of preservation research and testing at the Library of Congress is trying to figure out how CDs age so that we can better understand how to save them. But it's a tricky business, in large part because manufacturers have changed their processes over the years and even CDs made by the same company in the same year and wrapped in identical packaging might have totally different lifespans. 'We're trying to predict, in terms of collections, which of the types of CDs are the discs most at risk,' says France. 'The problem is, different manufacturers have different formulations so it's quite complex in trying to figure out what exactly is happening because they've changed the formulation along the way and it's proprietary information.' There are all kinds of forces that accelerate CD aging in real time. Eventually, many discs show signs of edge rot, which happens as oxygen seeps through a disc's layers. Some CDs begin a deterioration process called bronzing, which is corrosion that worsens with exposure to various pollutants. The lasers in devices used to burn or even play a CD can also affect its longevity. 'The ubiquity of a once dominant media is again receding. Like most of the technology we leave behind, CDs are are being forgotten slowly,' concludes LaFrance. 'We stop using old formats little by little. They stop working. We stop replacing them. And, before long, they're gone.'" You can donate CDs to be tested for aging characteristics by emailing the Center for the Library's Analytical Science Samples. I haven't had much trouble ripping discs that were pressed in the 80s (and acquired from used CD stores with who knows how many previous owners), but I'm starting to get nervous about not having flac rips of most of my discs.
Ceph has seen wide adoption in OpenStack customer deployments, alongside Red Hat's existing Gluster system." Ceph looks pretty cool if you're doing serious storage: CERN has a 3 Petabyte "prototype" cluster in use now (Only tangentially related, but still interesting, is how CERN does storage in general).