GDDR brings situational awareness to Dell Technologies business continuity technology. For example, GDDR can distinguish between network outages: SRDF link drops versus real disasters. This awareness is achieved by periodic exchange of dual-direction heartbeats between the GDDR LPARs. It seems simple, but without the underlying technology (such as SRDF/A) there is no means to determine the difference between a link outage and a real disaster. This is another advantage of GDDR compared to similar products from other mainframe storage vendors.
