VPC Management Overview

A virtual private cluster (VPC) is a set of resources configured and provisioned for a particular application. A VPC can contain multiple reservations (where each reservation is a defined set of resources) or represents a single virtual machine. Resources might include servers, databases, networks, or specialized hardware. These resources are set aside for a specific organization or user and can only be utilized by that organization for the duration of the VPC. Once the duration of the VPC has elapsed, resources are released and can be used for other requests.

After a VPC is set up, Viewpoint allows you to change some the VPCs resources and attributes, as organization demands change. For example, a VPC is created for a duration of two months to handle some workload. However, near the end of the two months, the organization requires the VPC for an additional month. Through Viewpoint, you can request to extend the duration of the VPC, and then pay for the additional month of resources (assuming billing is enabled).

The following actions modify all resources in a VPC:

• Modify VPC user roles
• Granting VPC Access to a New User
• Modifying VPC Duration

Resources that make up a VPC are divided into reservations. Each reservation has a set of resources that are contained on a single node. For some applications, the reservation represents a single virtual machine. In Viewpoint, users modify the resources for each reservation separately, instead of modifying the resources of the entire VPC. This allows certain applications to be modified without affecting other reservations in the VPC. For example, adding more processors to a VM running a web server would not affect a unrelated VM running a different application.

The following actions will modify individual reservations inside a VPC:

• Adding a Reservation to an Existing VPC
• Adding Resources to a Reservation
• Adding Storage to a Reservation
• Cloning a Reservation
• Deleting a Reservation
• Deleting Storage from a Reservation
• Removing Resources from a Reservation

Bare metal reservations cannot be modified. If you want to modify the reservation, you must delete the reservation and create a new one with the desired resources.