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

x
?
Solved

VMware Fault Tolerance (FT) - How to maintain HA during a reboot?

Posted on 2017-11-14
5
Medium Priority
?
43 Views
Last Modified: 2017-11-14
I have setup FT on a VM in VMware 6.5. The objective was to have this server always available. However, after applying Windows updates when I reboot the server, the 'failover VM' does not seem to take over. Is this limitation of FT - that high availability is there only for unexpected hardware failure, not for software maintenance operations?

Is MS Cluster the only solution in this scenario? Thanks.

AKK
0
Comment
Question by:Akulsh
  • 3
  • 2
5 Comments
 
LVL 124

Assisted Solution

by:Andrew Hancock (VMware vExpert / EE MVE^2)
Andrew Hancock (VMware vExpert / EE MVE^2) earned 2000 total points
Your FT Primary VM is in lock step "sync" with the Secondary VM.

This is to be expected and by design. All changes to the Primary will be reflected on the Secondary, especially if their is an OS failure e.g. BSOD on the Primary, will cause a BSOD on the secondary.

It it's FT based on Host Failure. If a Host fails due to uncontrolled shutdown, service will continue, because of the secondary on another host.

It depends what service you have,
0
 
LVL 3

Assisted Solution

by:Akulsh
Akulsh earned 0 total points
This is a very serious limitation of FT, beside the other ones like inability to do backups since you cannot take snapshots.
I think I will do Network Load Balancing for this web server.
FT is much ado about nothing...
0
 
LVL 124

Accepted Solution

by:
Andrew Hancock (VMware vExpert / EE MVE^2) earned 2000 total points
Correct, you cannot do snapshots.

If you have a Web Server, or Web Farm, A Network Load Balancer would be a much better choice, if configured correctly.
0
 
LVL 3

Author Comment

by:Akulsh
Conclusion: Stay away from FT feature of VMware.
0
 
LVL 124
Depends on your requirements and selecting the correct technology to provide you desired level of service.
0

Featured Post

Visualize your virtual and backup environments

Create well-organized and polished visualizations of your virtual and backup environments when planning VMware vSphere, Microsoft Hyper-V or Veeam deployments. It helps you to gain better visibility and valuable business insights.

Join & Write a Comment

In this post we will be converting StringData saved within a text file into a hash table. This can be further used in a PowerShell script for replacing settings that are dynamic in nature from environment to environment.
IF you are either unfamiliar with rootkits, or want to know more about them, read on ....
The viewer will learn how to successfully create a multiboot device using the SARDU utility on Windows 7. Start the SARDU utility: Change the image directory to wherever you store your ISOs, this will prevent you from having 2 copies of an ISO wit…
With the advent of Windows 10, Microsoft is pushing a Get Windows 10 icon into the notification area (system tray) of qualifying computers. There are many reasons for wanting to remove this icon. This two-part Experts Exchange video Micro Tutorial s…

886 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