Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

VM MAC COnflict

Posted on 2016-09-22
6
Medium Priority
?
859 Views
Last Modified: 2016-09-23
VM MAC COnflict

I have restored VM from Veeam to the same Vcenter, but different Datastore.
I got an alert VM MAC Conflict.

Any idea why ?

Original VM was renamed from VM1234 to VM1234-Old, the restored one kept the name VM1234
The restored one stayed powered off and the VM1234-Old was on.

I turned off the VM1234-Old and powered on VM1234

Any impact per the alert? and what is the best practice when you restore the entire VM to the same VCenter.?


Thanks
0
Comment
Question by:jskfan
  • 2
  • 2
  • 2
6 Comments
 
LVL 11

Expert Comment

by:Richardson Porto
ID: 41811539
This is the expected behaviour since the original virtual machine is still present on the inventory. See the Veeam article: https://www.veeam.com/kb1669
0
 
LVL 124

Assisted Solution

by:Andrew Hancock (VMware vExpert / EE MVE^2)
Andrew Hancock (VMware vExpert / EE MVE^2) earned 1000 total points
ID: 41811558
Because the Backup restored is the SAME e.g. CLONE!

You would have been better to use the CLONE function!

Just edit the VM Settings, edit the network interface and change MAC Address.

Or remove from Inventory, and it will ask if you've moved or copied!

And if you don't know the Answer.

See my EE Article

HOW TO: Select the right answer to "I Moved It" or "I Copied It" in VMware vSphere (ESXi)
0
 

Author Comment

by:jskfan
ID: 41812409
if the restored VM is in different Vcenter and Different Datastore than the existing VM. would this MAC Conflict alarm pop up ?

Or it also depends  on whether the VMs are on the samee ESX hosts /Clusters ?
0
Configuration Guide and Best Practices

Read the guide to learn how to orchestrate Data ONTAP, create application-consistent backups and enable fast recovery from NetApp storage snapshots. Version 9.5 also contains performance and scalability enhancements to meet the needs of the largest enterprise environments.

 
LVL 124
ID: 41812431
Not likely.

You MUST be aware of what you are restoring and to where, and if it's the SAME as an existing VM in your organisation.

Just the same as two computers with same IP Address.

We have seen in the past two physical desktop computers, with the same MAC Addresses, when purchased in bulk e.g. 250-500 at a time.
0
 
LVL 11

Accepted Solution

by:
Richardson Porto earned 1000 total points
ID: 41812439
If you restore the virtual machine on a different vCenter server it will not conflict, since the expected behavior is that MAC address must be unique even in different vCenters. About the datastore/host/cluster, it does not matter.

Anyway, you should not worry, just power on the restored virtual machine and a new MAC address will be assigned automatically.
0
 

Author Closing Comment

by:jskfan
ID: 41813049
Thank you Guys
0

Featured Post

Configuration Guide and Best Practices

Read the guide to learn how to orchestrate Data ONTAP, create application-consistent backups and enable fast recovery from NetApp storage snapshots. Version 9.5 also contains performance and scalability enhancements to meet the needs of the largest enterprise environments.

Question has a verified solution.

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

In this article, I will show you HOW TO: Perform a Physical to Virtual (P2V) Conversion the easy way from a computer backup (image).
Optimized for private cloud infrastructures and datacenters, Nano Server is minimalistic, yet super-efficient, OS for services such as Hyper-V and Hyper-V cluster. Learn how you can easily deploy Nano Server and unlock its power!
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 join ESXi hosts to Active Directory domains Open vSphere Client: Join ESXi host to AD domain: Verify ESXi computer account in AD: Configure permissions for domain user in ESXi: Test domain user login to ESXi host:

877 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