The Cisco GSS 4490 Global Site Selector is a critical component of any business resilience strategy to optimize multisite deployments that involve globally distributed data centers. The Cisco GSS 4490 networking product globally load balances distributed data centers, and is the cornerstone of multisite disaster recovery plans in deployments of market-leading Cisco content switches.The Cisco GSS 4490 allows businesses to deploy global Internet and intranet applications with the confidence that Web application users will be quickly rerouted to a standby data center if a primary data center outage or overload occurs. The Cisco GSS 4490 traffic-management process continuously monitors the load and health of the SLBs within each data center. This information is used in conjunction with customer-controlled load-balancing algorithms to enable the Cisco GSS 4490 to select a data center that is available and not overloaded within user-definable load conditions - in real time.By offloading the DNS server resolution process from traditional DNS servers, the Cisco GSS 4490 can optimize global site selection, boost DNS responsiveness, assure data center availability, and increase the scalability of Websites and data centers. The Cisco GSS 4490 is a critical component for enterprises and service providers deploying globally distributed data centers, or installing disaster recovery systems for Web-based applications.