Solved

HA VM failover question

Posted on 2013-05-13
5
243 Views
Last Modified: 2013-05-13
I have a HA setup with 4 blades (hosts) right now.

I have 1 VM (Called VM A) on one blade that uses a lot of resources.

None of the other hosts (blades) in the cluster have available resources matching what VM A uses

So my question is this, if VM A has to fail over will it still fail over to another host but run with limited resources or will it just not fail over?
0
Comment
Question by:iamuser
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
  • 2
5 Comments
 
LVL 121

Assisted Solution

by:Andrew Hancock (VMware vExpert / EE MVE^2)
Andrew Hancock (VMware vExpert / EE MVE^2) earned 500 total points
ID: 39161997
By Default it WILL NOT Fail-Over, unless you change the Cluster HA Settings, otherwise you will get an error message, stating not enough resources.

if you want to failover, but with klimited resources

Disable vSphere HA admission control.

you will receive the following error message

Insufficient resources to satisfy HA failover level on cluster

see here

http://pubs.vmware.com/vsphere-50/index.jsp?topic=%2Fcom.vmware.vsphere.avail.doc_50%2FGUID-53F6938C-96E5-4F67-9A6E-479F5A894571.html

http://www.yellow-bricks.com/2012/12/04/insufficient-resources-to-satisfy-ha-failover-level-on-cluster/
0
 

Author Comment

by:iamuser
ID: 39162008
so if i change the cluster HA settings the VM will failover but just run slower
0
 
LVL 121

Accepted Solution

by:
Andrew Hancock (VMware vExpert / EE MVE^2) earned 500 total points
ID: 39162017
Correct.

but be careful, and use common sense, if you have a VM which requires 64GB of memory, and your host only has 8GB, it will run very very slowly! (and probably fail!)

Ideally all hosts would be roughly equal!
0
 

Author Comment

by:iamuser
ID: 39162127
great thanks for the clarification
0
 
LVL 121
ID: 39162353
No problems!
0

Featured Post

Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

When converting a physical machine to a virtual machine using VMware vCenter Converter Standalone or vCenter Converter Enterprise, if an adapter type is not selected during the initial customization the resulting virtual machine may contain an IDE d…
If your vDisk VHD file gets deleted from the image store accidentally or on purpose, you won't be able to remove the vDisk from the PVS console. There is a known workaround that is solid.
Teach the user how to use configure the vCenter Server storage filters Open vSphere Web Client:  Navigate to vCenter Server Advanced Settings: Add the four vCenter Server storage filters: Review the advanced settings: Modify the values of the four v…
Teach the user how to install and configure the vCenter Orchestrator virtual appliance Open vSphere Web Client: Deploy vCenter Orchestrator virtual appliance OVA file: Verify vCenter Orchestrator virtual appliance boots successfully: Connect to the …

728 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question