A powerful, easy to use Global Server Load Balancing solution


ZXTM GLB is a powerful, easy to use Global Server Load Balancing solution that provides business continuity and improved customer experience by enabling failover and load balancing across globally-distributed datacenters.

It is a DNS-based Global Server Load Balancing product that allows organizations to host business critical services from multiple locations.


Server Load Balancing

Service Load Balancing is used within a datacenter to load-balance traffic across local servers. For more details, please see Zeus' ZXTM traffic management product.


Global Server Load Balancing

Global Server Load Balancing (GSLB) systems allow an organization to host services from multiple different service points ('datacenters'). The Disaster Recovery capability of ZXTM Global Load Balancer provides failover from a primary datacenter to a secondary one if the primary were to fail.

ZXTM GLB continually tests the availability and correct operation of the services running in each datacenter. Customizable health monitors run a range of tests, and verify external connectivity.


For each service, datacenters can be chained in the order they should be used. The first datacenter in the chain is used by all clients unless a monitor indicates that it has failed. Upon failure, the service fails over to the next datacenter in the chain.

When the first datacenter recovers, ZXTM GLB will not failover back to that datacenter. It will continue to send clients to the subsequent datacenter until it is explicitly instructed to fail back to the primary. This allows an administrator to resynchronize data back to the recovered datacenter before making it live again. The benefit of an active-passive load balancing mode is that it gives a very deterministic, controllable disaster recovery solution, ideally suited for complex, stateful applications.

For stateless applications, such as simple content serving, the optional 'Automatic Failback' mode will immediately make the primary datacenter active again when it recovers.


Key Benefits of ZXTM GLB

  • Business Continuity: In the event of a catastrophic datacenter failure, ZXTM GLB will direct your users to alternative datacenters that host your services.
  • Improve Customer Experience: ZXTM GLB can load-balance your users across multiple datacenters, directing each user transparently to the datacenter that is performing the best and is geographically closest.

Advantages

  • Visualization: The real-time traffic visualization in ZXTM GLB gives an almost hypnotic view of your customer activity and datacenter health!
  • Easy to Deploy: ZXTM GLB extends your existing DNS configuration, manipulating responses to control user activity. It does not replace any existing infrastructure, and can be easily deployed or removed.
  • Flexible, without lock-in: ZXTM GLB is available in two different product versions, and in software or appliance form. It functions equally well with any vendor's server load balancer and other infrastructure.

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