1. The percentage of resources used by the agent can vary depending on what is being monitored. Assuming a single agent is not monitoring a large number of resources, the agent footprint is minimal.
2. For the open source version - 50-100 agents (averaging 20 resources per platform). The Enterprise version has configurations for different scales, with a large scale setup supporting 2000 agents, with 40,000 metrics per minute.
3. The Enterprise version has an HA setup, involving a setup with of two Active-Active Hyperic servers.
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