Evaluating server activity for resource balancing

To balance resources, evaluate the database activity for each server on which you want to balance resources. Then compare that activity to redistributed database activity that would result from balancing resources.

The Resource Balancing view on the Server - Performance tab of the Domino® Administrator provides this information in a number of ways. First, the status of selected servers or of servers in a selected server profile displays. A red X next to the server indicates that the server is not available for resource balancing, possibly because the server is down. Hover over the red X with your mouse to see the status of the server, including the error message. The Edit Server Properties dialog box also shows associated error messages in the Status field.

For each goal specified in the Server Profile Options dialog box, Activity Trends displays the following information that you use to evaluate whether a server is a candidate for resource balancing:

• Current® -- The current value of the metric as recorded.
• Capacity -- The resource capacities of each server. Resources are balanced using either capacity or target values. By default, the capacity is the value used in determining the targets during resource balancing. You set this value by editing server properties.
• Target -- The target value that you want to meet during resource balancing. This value is based on the statistics specified as primary and secondary goals. For example, if Notes® Transactions is a goal, the value is the number of transactions. So, if a server has a target of 2000 transactions, the resource-balancing solution attempts to provide this server with 2000 transactions.
• Projected -- The calculated final value of the server's resource, if the generated solution (plan) were to be applied.
• Accuracy -- A percentage from 0 to 100 that represents how successfully the moves were made, based on the behavior criteria you specified. A low percentage is bad and a high percentage is good. Servers whose values are within the tolerance for the goal (set in server profile options) display in blue. Values that did not achieve the tolerance specified for the Goal display in red. This is not necessarily bad, sometimes it means you need to use other servers or that there is no good solution for this resource problem. In a good balance, there should be almost no red values for the primary goal, and perhaps a few ones for the secondary.

If you do not like the distribution of activity or servers based on this evaluation, you can edit the server properties to change the server role. Likewise, you can alter some of the options selected in the Server Profile Options dialog box. If you have not set server profile options, you can edit the server properties to change some of the option defaults, and then analyze again using the new server values.