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

x
?
Solved

VMware 4.0: maintenance mode vs shutdown, which in which situations?

Posted on 2014-10-03
3
Medium Priority
?
357 Views
Last Modified: 2014-10-03
I have to move a SAN to a different UPS temporarily.  I saw that sometimes people use maintenance mode and other times they simply shut everything down and power off.  Can someone explain maintenance mode and why I'd want to use it vs. just shutting down?  Thanks.
0
Comment
Question by:LB1234
  • 2
3 Comments
 
LVL 124

Accepted Solution

by:
Andrew Hancock (VMware vExpert / EE MVE^2) earned 2000 total points
ID: 40360425
Maintenance Mode when enabled on a Host ESX or ESXi server prevents a VM being powered ON that host.

It also removes it from being used in the cluster .

If we are performing SAN work we like to

1. Put Host in Maintenance Mode
2. Shutdown Host
3. Shutdown SAN.

Power up is reverse and End with Exit Maintenance Mode
0
 
LVL 1

Author Comment

by:LB1234
ID: 40360430
Thanks for the insight.  Does putting the host into maintenance mode initiate VMotioning the resident VM's to another host?    I'm assuming I shut off the VM's before entering maint. mode.
0
 
LVL 124
ID: 40360439
If you have a Cluster with HA Enabled and DRS set to Automatic....

Entering Maintenance will evacuate the host!

After All VMs are moved OFF via vMotion the Host then enters Maintenance Mode...

Another good reason to put in Maintenance Mode otherwise you would have to manually Migrate vMotion each VM.
0

Featured Post

New feature and membership benefit!

New feature! Upgrade and increase expert visibility of your issues with Priority Questions.

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).
When rebooting a vCenters 6.0 and try to connect using vSphere Client we get this issue "Invalid URL: The hostname could not parsed." When we get this error we need to do some changes in the vCenter advanced settings to fix the issue.
Teach the user how to use create log bundles for vCenter Server or ESXi hosts Open vSphere Web Client: Generate vCenter Server and ESXi host log bundle:  Open vCenter Server Appliance Web Management interface and generate log bundle: Open vCenter Se…
Teach the user how to install log collectors and how to configure ESXi 5.5 for remote logging Open console session and mount vCenter Server installer: Install vSphere Core Dump Collector: Install vSphere Syslog Collector: Open vSphere Client: Config…

963 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