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You can deploy the NIOS appliance as a Grid member in an Infoblox Grid or independently as a Anchorbookmark698bookmark698 standalone deployment. NIOS appliances support both IPv4 and IPv6 networks and you can deploy them in either IPv4, IPv6, or dual mode (IPv4 and IPv6). Grids offer many advantages for large organizations while independent deployments can be sufficient for smaller sites. For example, if your ISP hosts one name server to respond to external DNS queries, you can deploy a single independent NIOS appliance as the other name server, as shown in Figure 6.1. Anchorbookmark699bookmark699Figure 6.1 the following figure:

Single Independent Appliance as a DNS Server

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Using primary and secondary name servers provides DNS protocol redundancy, and configuring two DHCP servers as DHCP failover peers provides DHCP protocol redundancy. However, you can only have hardware redundancy if you deploy appliances in an HA (high availability) pair. Should the active node in an HA pair fail, the passive node becomes active and begins serving data, as shown in Figure 6.2. the following figure. For more information about HA pairs, see see About HA Pairs.

Figure 6.2 Independent HA Pair

System Manager GUI

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