EMC has agreed to acquire DSSD, a Silicon Valley startup developing technology for pooling server-based flash for high-performance data access.The company will help EMC tackle challenges in making flash capacity on servers into shared storage capacity. Its chairman is Andy Bechtolsheim, a pioneer of networked computing from Sun Microsystems and numerous startups. Its CEO, former 3Par executive Bill Moore, will continue to run the DSSD business inside EMC while Bechtolsheim remains a strategic advisor.