The framework comprises a
controller node and multiple instances of compute nodes.
Each group has sub group
controller node and gateway node, in which the sub group
controller node is controller of subgroup and gateway node is controller among subgroups.
The
controller node sends a ReadProperty request message one by one in turn to all the other ([N.sub.m] - 1) master nodes.
Pricing starts at GBP5,500 per
controller node and GBP11,000 for a minimum two-controller configuration.
The following part explains the deployment steps on one
controller node and three compute nodes:
Controller Node. The
controller node in server module includes GPC controller, Kalman state estimator, sender, and receiver as shown in Figure 5.
With a clustered network storage system the customer only has to add another
controller node, which costs far less than acquiring a whole new system, its associated software and additional maintenance charges.