150,000 Cloud VMs Help Solve Mysteries of Universe at CERN

To read this article by Jon Brodkin on wired.co.uk, click on:
150,000 cloud VMs to help solve mysteries of Universe at Cern
Cern has block storage set aside to go along with OpenStack VM instances, but the bulk storage where it has most of its physics data is managed by a Cern-built system called Castor. This includes 95PB of data on tape for long-term storage, in addition to disk storage. Cern experiments produce a petabyte of data a second, which is filtered down to about 25GB per second to make it more manageable.