vRealize Automation IaaS DEM Workers are responsible for provisioning and deprovisioning tasks that are initiated by the vRealize Automation portal. DEM Workers also communicate with certain infrastructure endpoints.

Table 1. Resource Requirements for the vRealize Automation DEM Worker per Virtual Machine

Attribute

Specification

vCPUs

2

Memory

8 GB

vNICs

1

Local drives

1

vRealize Automation functions

DEM Worker

Operating system

Microsoft Windows Server 2016

Table 2. Design Decisions on vRealize Automation IaaS DEM Worker

Decision ID

Design Decision

Design Justification

Design Implication

SDDC-CMP-010

Install three DEM Worker instances per DEM host.

Each DEM Worker can process up to 30 concurrent workflows. Beyond this limit, workflows are queued for execution. If the number of concurrent workflows is consistently above 90, you can add more DEM Workers on the DEM host.

If you add more DEM Workers, you must also provide additional resources to run them.