Solved

Win 2012 R2 not recognizing correct RAM

Posted on 2016-10-12
11
77 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
11 Comments
 
LVL 56

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 95

Assisted Solution

by:Lee W, MVP
Lee W, MVP earned 62 total points
ID: 41841164
Are you using Dynamic Memory?
0
 

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 13

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
Backup Your Microsoft Windows Server®

Backup all your Microsoft Windows Server – on-premises, in remote locations, in private and hybrid clouds. Your entire Windows Server will be backed up in one easy step with patented, block-level disk imaging. We achieve RTOs (recovery time objectives) as low as 15 seconds.

 
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 56

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 32

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

Top 6 Sources for Identifying Threat Actor TTPs

Understanding your enemy is essential. These six sources will help you identify the most popular threat actor tactics, techniques, and procedures (TTPs).

Join & Write a Comment

I don't know if many of you have made the great mistake of using the Cisco Thin Client model with the management software VXC. If you have then you are probably more then familiar with the incredibly clunky interface, the numerous work arounds, and …
OfficeMate Freezes on login or does not load after login credentials are input.
This tutorial will walk an individual through the process of configuring their Windows Server 2012 domain controller to synchronize its time with a trusted, external resource. Use Google, Bing, or other preferred search engine to locate trusted NTP …
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…

758 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

Need Help in Real-Time?

Connect with top rated Experts

23 Experts available now in Live!

Get 1:1 Help Now