keywords: emc ibm storage virtualization hardware
text: IBM unveils challenge to EMC For the second time in two weeks, IBM Corp. will unveil a product designed to challenge its archrival in the data storage business: EMC Corp. of Hopkinton. EMC dominates the market for high-end corporate storage hardware, but IBM's new ''storage virtualization quot; software could encourage defections from EMC by making it easier for companies to mix and match storage hardware from ...