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Note: HP renamed the product called now HP operations manager way too many times. Also it is very inconsistent with using abbreviations. Here we will assume that the term "HP Operations manager" and abbreviations HPOM, OMU, and OVO mean the same thing :-)
This notion was introduced in version 8. It exist in addition and separately from the old notion of Node Groups.
It allow both applying some actions to the set of nodes in a layout group as well as to present hierarchical structure of the datacenter for operators. By default, all managed nodes are presented in "flat" window (Managed Nodes Window) in the Operator GUIs.
If you have several hundred nodes it is better to structure operator view either by OS or by location. For this purpose different node hierarchies can be created all rooted at specific members of Node Hierarchy view of Admin GUI. The list of root members is available from All Node Hierarchies tab in Admin GUI.
By default only one node hierarchy exists. It is called Nodebank (or OVO Node Bank) and it represents node hierarchy for administrators, not operators.
A node hierarchy is used to configure the view that operator will see in Operator Java GUI when they open the Node Bank. A Node Hierarchy is assigned to the operator and provides an organized view of the operators managed node responsibilities. To customize a node hierarchy, use the All Node Hierarchies tab in Admin GUI.
You can have root members of layout nodes hierarchies that represent regional/geographical view, OS view, Hardware views, department view, etc. In other words you can build a node hierarchy to represent the logical organization of the nodes for the operator's console.
Each user can be assigned one and only one Node Hierarchy. To assign it to the user open user account in editing mode and
A Node Hierarchy defines “how” a user will see their assigned nodes. The assigned Node Groups in the user's responsibility matrix define “which” nodes the user sees.
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