In my first post on policy, i tried to show what policy’s influence would be like from a top-level standpoint. We see that policy can start from a localized array standpoint and “fix” performancing or hotspot issues based on key LUN migration technologies (like EMC’s FAST promises to do; Compellent already does this) while allowing business processes to continue “unharmed.” To a certain extent, the LUN migrations of yesteryear were an act of policy, if only to show the level of manual involvement required in order to manage a SAN. What I’d like to look at today is the concept of extending policy BEYOND a localized resource or array and looking at its impact in a global storage environment.
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