A Pan-Asian Power Utility required modernisation of SAN deployed Exchange 2010, which suffered from significant storage based performance issues. Exchange 2010 was upgraded to Exchange 2013, in an Active-Active datacentre deployment aligned to Microsoft Exchange Preferred Architecture. Physical servers were deployed with JBOD storage, thus creating a granular HA and DR model aligned to best practices. The engagement included, design, implementation and upgrade, creating operations and administration documentation, integration into SCOM as well as patch management guidance.