Physical nodes are contained in enclosures, hence their location in the system is presented as
enclosureX.nodeY. The system can be configured with one node size (large) that has
64 TB of raw storage. Each enclosure contains four nodes of the same size. If you buy the base
Lenovo system, it contains two enclosures, four nodes each.
Three nodes in a system are always assigned a control role and these three nodes are designated as a Control Plane. Another three nodes are assigned a worker role and they are used to run the services in your cluster. The remaining two nodes in the base system do not have any role assigned by default.
Worker nodes can also be assigned a label, which might then be used to define which service to run on a labeled node.
|Control Node||Three servers in a system are always assigned a control role and these three nodes are
designated as a Control Plane. These servers are candidates for a Platform Manager hub. They host one Control Virtual Machine.
At least two of the three control nodes must be operational for the system to work.
If Netezza Performance Server (NPS) is installed on a
system without connector nodes, one of the control nodes is the NPS host (
|Worker Node||Compute node for services other than NPS.|
|VDB Node||Compute node dedicated to NPS.
Note: Nodes in this role are monitored, but they cannot be managed by Platform Manager, hence their state is always UNMANAGED. Any hardware issues are reported as in the case of the other node types.
|Unset Node||A node with no personality assigned.|
|Connector Node (CN)||A distinct type of node that provides the ability to use fibre channel (FC) block storage for high-speed backup and restore, load, and unload for Netezza Performance Server.|
Nodes are monitored by Platform Manager, which informs you of the state that the node is in. Node state can be changed manually, or automatically by Platform Manager.
The nodes are named after their enclosure and index. The first four nodes are
second enclosure contains the next four nodes:
e2n4. The index portion of the node names are always
relative to their enclosure.
You can use the ap node command to view information about the nodes in your system, manage the node states, and assign personalities.