?
Solved

HA VM failover question

Posted on 2013-05-13
5
Medium Priority
?
244 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 123

Assisted Solution

by:Andrew Hancock (VMware vExpert / EE MVE^2)
Andrew Hancock (VMware vExpert / EE MVE^2) earned 2000 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 123

Accepted Solution

by:
Andrew Hancock (VMware vExpert / EE MVE^2) earned 2000 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 123
ID: 39162353
No problems!
0

Featured Post

Portable, direct connect server access

The ATEN CV211 connects a laptop directly to any server allowing you instant access to perform data maintenance and local operations, for quick troubleshooting, updating, service and repair.

Question has a verified solution.

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

If we need to check who deleted a Virtual Machine from our vCenter. Looking this task in logs can be painful and spend lot of time, so the best way to check this is in the vCenter DB. Just connect to vCenter DB(default DB should be VCDB and using…
In this article, I will show you HOW TO: Perform a Physical to Virtual (P2V) Conversion the easy way from a computer backup (image).
Advanced tutorial on how to run the esxtop command to capture a batch file in csv format in order to export the file and use it for performance analysis. He demonstrates how to download the file using a vSphere web client (or vSphere client) and exp…
This tutorial will walk an individual through the steps necessary to enable the VMware\Hyper-V licensed feature of Backup Exec 2012. In addition, how to add a VMware server and configure a backup job. The first step is to acquire the necessary licen…
Suggested Courses

762 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