troubleshooting Question

VMWare VSPhere 5 HA and Available Memory

Avatar of Danstr1
Danstr1 asked on
VMware
6 Comments1 Solution547 ViewsLast Modified:
I'm relatively new to VMWare and have a question that relates to HA.  I have HA installed and configured which has been tested and working properly this far. My environment is fairly straight forward with two hosts that share storage (VSphere 5). For sake of ease, let's say that I have 4 VM's working on each of my host machines. Each of these servers has 6 GB of RAM assigned to it so the actively used RAM is 24 GB. Each of the host machines has 48 GB of RAM so there is always 24 GB of free or available RAM if HA should need to use it. I need to add a 9th VM to the mix. So now one of my hosts (host A)  has 30 GB of RAM assigned and 18 available. If either Host A or Host B were to go down, there now isn't sufficient RAM. So my question is, if there are 5 machines with 6 GB of RAM assigned each, does HA require the full 30 GB or does it take into consideration the amount of RAM the VM's are actively using. Say that each server was actively using no more than 4 GB of the allotted 6. Will HA then require only 20 GB or does it require the full 30 GB as assigned to the VM's?
ASKER CERTIFIED SOLUTION
Join our community to see this answer!
Unlock 1 Answer and 6 Comments.
Start Free Trial
Learn from the best

Network and collaborate with thousands of CTOs, CISOs, and IT Pros rooting for you and your success.

Andrew Hancock - VMware vExpert
See if this solution works for you by signing up for a 7 day free trial.
Unlock 1 Answer and 6 Comments.
Try for 7 days

”The time we save is the biggest benefit of E-E to our team. What could take multiple guys 2 hours or more each to find is accessed in around 15 minutes on Experts Exchange.

-Mike Kapnisakis, Warner Bros