We help IT Professionals succeed at work.

ESXi 5.0 Resource Pools

compdigit44
compdigit44 asked
on
803 Views
Last Modified: 2012-02-17
I have a ESXi 5.0 server with 128GB of Ram and local storage. The server has 13 VM's range from 4GB of Ram to 20GB (Please note 4 of the VM's are using 20GB). Only one VM has a 1GB reservation. I was suprised to see that my VM through a host memory alarm early today and that 90% of my host memory was in use. When I looked at the resource allocations the guest VM's memory usage was very low but the host memory usage on the at least 4 VM's was high.

I have three resource pools in place.
high - no reservation
normal - 900mb
low - 300mb

Is it possible to have to many resource pools which could cause resource problems
Comment
Watch Question

Top Expert 2010

Commented:
May I ask why you're using RPs? Do you have SLAs in place for guaranteed resource allocation to your VMs?

vSphere does a great job on its own of allocating resources where needed to VMs that may need it (in contention). Unless you have an org/departmental need to segregate resources I recommend against using RPs. You can run into issues with resources as well create an extra layer of administration overhead that may not be needed.

~coolsport00
Top Expert 2010

Commented:
And yes, if you don't understand RPs, you can run the risk of not having enough resources in a RP for your VMs to run, or run with optimal performance...
Top Expert 2010

Commented:
I recommend looking through the Res Mgmt Guide, beginning on pg. 47 for more on RPs:
http://pubs.vmware.com/vsphere-50/topic/com.vmware.ICbase/PDF/vsphere-esxi-vcenter-server-50-resource-management-guide.pdf

Author

Commented:
Thanks for the reply. The reason why I want to use RP to to allow VM that were more important to have access to resource when durning higher processing times....I created the RP's to help avoid resource problems. Which is why I'm comfused as to why my memory was so high. Once I removed two of my resource pools memory usage on the host when down.. I haven't read the PDF yet but could you give me a nut shell explaination in the mean time
Top Expert 2010
Commented:
This one is on us!
(Get your first solution completely free - no credit card required)
UNLOCK SOLUTION

Gain unlimited access to on-demand training courses with an Experts Exchange subscription.

Get Access
Why Experts Exchange?

Experts Exchange always has the answer, or at the least points me in the correct direction! It is like having another employee that is extremely experienced.

Jim Murphy
Programmer at Smart IT Solutions

When asked, what has been your best career decision?

Deciding to stick with EE.

Mohamed Asif
Technical Department Head

Being involved with EE helped me to grow personally and professionally.

Carl Webster
CTP, Sr Infrastructure Consultant
Empower Your Career
Did You Know?

We've partnered with two important charities to provide clean water and computer science education to those who need it most. READ MORE

Ask ANY Question

Connect with Certified Experts to gain insight and support on specific technology challenges including:

  • Troubleshooting
  • Research
  • Professional Opinions
Unlock the solution to this question.
Join our community and discover your potential

Experts Exchange is the only place where you can interact directly with leading experts in the technology field. Become a member today and access the collective knowledge of thousands of technology experts.

*This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

OR

Please enter a first name

Please enter a last name

8+ characters (letters, numbers, and a symbol)

By clicking, you agree to the Terms of Use and Privacy Policy.