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Systems & Data Center · Intermediate

vSphere Distributed Resource Scheduler (DRS)

A vSphere cluster feature that balances VM workloads across hosts using vMotion and places VMs at power-on.

Definition

DRS automation levels are manual, partially automated and fully automated. Affinity and anti-affinity rules keep VMs together or apart, and DRS integrates with maintenance mode to evacuate hosts.

Example

An anti-affinity rule keeps two domain controller VMs on different hosts.

Exam tip

DRS requires vCenter and vMotion; it balances load, while HA handles failures.

Related terms