VMware vSphere Distributed Resource Scheduler

VMware DRS dynamically balances computing capacity across a collection of hardware resources aggregated into logical resource pools, continuously monitoring utilization across resource pools and intelligently allocating available resources among the virtual machines based on pre-defined rules that reflect business needs and changing priorities. When a virtual machine experiences an increased load, VMware DRS automatically allocates additional resources by redistributing virtual machines among the physical servers in the resource pool.

Create DRS Cluster

Step 1: Edit Settings

Step 2: Increase migration threshold into aggressive

Create a Load Imbalance

Step 1: Run CPUBusy script on few VM

Step 2: Monitor vSphere DRS

Step 3: Check DRS Recommendations and Apply them

Step 4: Check summary again

Create DRS Rules

Step 1: Add a DRS rule

Step 2: Select type as Keep VMs Together (in same host)

Step 3: After adding the rule check DRS recommendations again and apply them

Step 4: Goto related objects in the cluster and check those VMs together or not

 

Disable a DRS Rule

Step 5: Create another DRS rule to separate VMs

Step 6: Check the related object again and check are they on different host

 

Create DRS Groups

Step 1: Add VMs

Step 2: Add host

Step 3: Assign the DRS VM group to run on DRS Hosts

Step 4: Check DRS recommendation and apply changes

Step 5: If you try to migrate any of the VM that include in a DRS VM group will fail

 

Check the summary