Admin Tips
- Virtualization Tips & Tricks
  - Virtualized Management
    - VMware VirtualCenter Tips
      - Resource Optimization
        DRS and resource pools relation

Section(s): General, High Availability, Resource Optimization
Published on Aug 07, 2008.
Last Modified on Jul 29, 2008.
Last Modified by Vincent Vlieghe.
Rated 3 out of 5 based on 1 votes.

DRS and resource pools: beware of maintenance!

It is possible that it becomes necessary to disable the DRS (Distributed Resource Scheduler) feature on an ESX cluster. A typical scenario would be maintenance on your ESX hosts./VirtualCenter. This avoids that virtual machines will VMotion to another host. You must be very careful: when disabling (unchecking) DRS as a cluster option in VirtualCenter all resource pools for that cluster will be deleted. Just set DRS to manual to avoid this and set DRS back to fully automated after the maintenance period is over

About Vincent Vlieghe

Vincent Vlieghe is a Technology Consultant for a company called Xylos. He has a number of certifications including MCSE, CCA, HP AIS, VCP and Softgrid CP. His main focus is on virtualization, Server Based Computing, Operating Systems and hardware/storage. In addition to his consultancy job, Vincent is also a trainer. You can find his blog at http://virtrix.blogspot.com/.