An Infoblox Grid is a group of two or more NIOS and vNIOS virtual appliances that share sections of a common, distributed, built-in database and which you configure and monitor through a single, secure point of access: the Grid Master. A Grid consists of a master and at least one member. A Grid member can be a single appliance or an HA pair. For information about the Infoblox Grid and HA pairs, refer to the Infoblox NIOS Documentation.
To create a Grid, you must first set up a Grid Master and then add members. In a Grid, you can configure vNIOS virtual appliances as Grid Masters, Grid Master candidates, and Grid members (or a reporting member), depending on the vNIOS appliance specifications. Note that some of the vNIOS for KVM and OpenStack virtual appliances are supported as Grid members only. See Table 1.1 for information about supported appliance models and their specifications.
To set up a Grid:

1. Configure the Grid Master. You can configure a single Grid Master or two vNIOS appliances as an HA Grid Master. For information, see Configuring vNIOS Appliances as Grid Masters.
2. Provision Grid members on the Grid Master. Define Grid member settings on the Grid Master before you join the members to the Grid. For information, see Provisioning vNIOS Members on the Grid Master.
3. Join members to the Grid. For information, see Configuring and Joining vNIOS Grid Members.