Solved

Win 2012 R2 not recognizing correct RAM

Posted on 2016-10-12
11
116 Views
Last Modified: 2016-10-13
I have built a new Hyper-V VM, win 2012R2.  I gave it 115GB of ram. In the "this pc" properties shows 113GB, but when looking at the server manager, it only shows 3.88 GB. This is wrong and I was wondering if anyone knows how to fix this?

win2012R2
0
Comment
Question by:afacts
[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
11 Comments
 
LVL 58

Expert Comment

by:Cliff Galiher
ID: 41841153
Is the host also 2012 R2? Why was 2008 selected as a tag?
0
 

Author Comment

by:afacts
ID: 41841163
yes, the host is also 2012 R2.  I selected 2008 as a tag just to give my question more visibility.
0
 
LVL 96

Assisted Solution

by:Lee W, MVP
Lee W, MVP earned 62 total points
ID: 41841164
Are you using Dynamic Memory?
0
Ransomware-A Revenue Bonanza for Service Providers

Ransomware – malware that gets on your customers’ computers, encrypts their data, and extorts a hefty ransom for the decryption keys – is a surging new threat.  The purpose of this eBook is to educate the reader about ransomware attacks.

 

Author Comment

by:afacts
ID: 41841173
No, I'm using static memory.   Since it's a SQL box, I was thinking the static memory will be better or faster than the dynamic.
0
 
LVL 17

Assisted Solution

by:John Tsioumpris
John Tsioumpris earned 62 total points
ID: 41841369
Maybe...irrelevant...but are you using a 64bit OS/VM setup installation....it seems like something  is wrong in your settings...
0
 
LVL 30

Assisted Solution

by:pgm554
pgm554 earned 62 total points
ID: 41841380
I've done that myself from time to time using  32 bit instead of 64 bit version of 2008
0
 
LVL 58

Assisted Solution

by:Cliff Galiher
Cliff Galiher earned 62 total points
ID: 41841387
There is no 32-bit version of 2012 R2. Something else is going on. Dynamic memory as my next thought too. Have both hsot and guest been fully patched AND restarted?
0
 

Author Comment

by:afacts
ID: 41841932
I'm using 64 bit.
The host has been fully updated with windows updates.  I will update the VM, I have not done
That yet.  Just for kicks to rule that out, I will
Change the ram to dynamic and see what happens.
I have already restarted the VM a few times.
0
 
LVL 34

Accepted Solution

by:
it_saige earned 252 total points
ID: 41842291
Dynamic memory does not affect this, this should be the amount of startup ram.  Since hyper-v treats memory as a shared and pooled resource, the Dynamic Memory setting allows for the host operating system to reallocate physical memory to guest operating systems on an as needed basis. - Source

Proof of concept?

Here is a guest DC that has been dynamically assiged 1520MB of ram with a startup allocation of 8GB -Capture.JPGWhile the guest OS shows this:

This PC -Capture.JPGServer Manager -Capture.JPGResource Monitor -Capture.JPG
What does the resource monitor show?

-saige-
0
 

Author Comment

by:afacts
ID: 41842661
Actually, since MS creates a dynamic disk by default, I tried converting it to fixed, but ran out of space, so I deleted the VM and am creating a new one.  This issue might be a mute point after the disk is created.

Thanks for everyone's help, I'll see what happens with the next install of the OS.
0

Featured Post

Does Powershell have you tied up in knots?

Managing Active Directory does not always have to be complicated.  If you are spending more time trying instead of doing, then it's time to look at something else. For nearly 20 years, AD admins around the world have used one tool for day-to-day AD management: Hyena. Discover why

Question has a verified solution.

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

First I will try to share a design of a Veeam Backup Infrastructure without Direct NFS Access backup. Note: Direct NFS Access backup transport mechanism is only available in Veeam v9 In above I try to design the Veeam Backup flow between i…
In this article, I am going to show you how to simulate a multi-site Lab environment on a single Hyper-V host. I use this method successfully in my own lab to simulate three fully routed global AD Sites on a Windows 10 Hyper-V host.
In this Micro Tutorial viewers will learn how to restore single file or folder from Bare Metal backup image of their system. Tutorial shows how to restore files and folders from system backup. Often it is not needed to restore entire system when onl…
This tutorial will walk an individual through the process of installing of Data Protection Manager on a server running Windows Server 2012 R2, including the prerequisites. Microsoft .Net 3.5 is required. To install this feature, go to Server Manager…

734 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