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Difference between Installed and Total memory in Windows 2008 server
We've just added memory to our windows 2008 64 bit server.
It originally had 12Gb, and we added another 16gb to make 28gb.
Windows recognize the added memory but it says:
INSTALLED MEMORY 28GB (12 GB Usable)
And in Resource Monitor it says:
Hardware reserved = 16396MB
In Use = 12154 MB
Modified = 3MB
Standby = 117MB
Free = 1MB
Available = 118MB
Cached = 119MB
Total = 12276MB
Installed = 28672 MB
My questions are:
1. Can someone please explain what this means?
2. Is the additional 16 gb being used? I know windows recognized it (hence the "Installed" is 28GB) but why is the "Total" is only 12GB?
3. We run virtual computers on this server. Assuming 1 virtual comp is using 1GB, we hope to run another 16 virtual comp. But before we do that, I wanted to confirm that all memory are recognized and used?
Thank you
It originally had 12Gb, and we added another 16gb to make 28gb.
Windows recognize the added memory but it says:
INSTALLED MEMORY 28GB (12 GB Usable)
And in Resource Monitor it says:
Hardware reserved = 16396MB
In Use = 12154 MB
Modified = 3MB
Standby = 117MB
Free = 1MB
Available = 118MB
Cached = 119MB
Total = 12276MB
Installed = 28672 MB
My questions are:
1. Can someone please explain what this means?
2. Is the additional 16 gb being used? I know windows recognized it (hence the "Installed" is 28GB) but why is the "Total" is only 12GB?
3. We run virtual computers on this server. Assuming 1 virtual comp is using 1GB, we hope to run another 16 virtual comp. But before we do that, I wanted to confirm that all memory are recognized and used?
Thank you
That might help your question.
http://www.techrepublic.com/blog/window-on-windows/investigate-memory-usage-with-windows-7-resource-monitor/3176
http://www.techrepublic.com/blog/window-on-windows/investigate-memory-usage-with-windows-7-resource-monitor/3176
What kind of server? Check the BIOS config - is memory set to mirror?
Do you have multiple CPUs or just one. Sometimes the hardware may not allow the OS to fully recognize the RAM depending on configuration and CPU (I have a client with a Dell T605 server that only has one CPU and so only supports 16 GB but adding a second CPU can allow it to support 32 GB.
Do you have multiple CPUs or just one. Sometimes the hardware may not allow the OS to fully recognize the RAM depending on configuration and CPU (I have a client with a Dell T605 server that only has one CPU and so only supports 16 GB but adding a second CPU can allow it to support 32 GB.
ASKER
Thanks for the link teomcam.
But I'm not really sure I understand why the difference between "Total" and "Installed" is so big...
But I'm not really sure I understand why the difference between "Total" and "Installed" is so big...
ASKER
Leew, its an IBM server with 2 cpu.
But I think the oS recognize the RAM, only that it's not making it available to use.
Because "Total" is 12276 MB and "Installed" is 28672MB
The physical ram size is shown correctly on the "Installed" information.
But I think the oS recognize the RAM, only that it's not making it available to use.
Because "Total" is 12276 MB and "Installed" is 28672MB
The physical ram size is shown correctly on the "Installed" information.
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ASKER
Andyalder,
So far that I know, the memory was recommended by IBM distributor because they had asked for the serial number of our server.
But in any case, what do you propose me to do? Install the cpu-z software and post the parts number?
I will try to do this on monday. Thanks
So far that I know, the memory was recommended by IBM distributor because they had asked for the serial number of our server.
But in any case, what do you propose me to do? Install the cpu-z software and post the parts number?
I will try to do this on monday. Thanks
They probably looked it up on IBM's web to see what it was supplied originally with, but that's not infallible. I can check when you post the part numbers, there may be an IBM equivalent online diagnostic to list the FRUs rather than CPU-z but that should work OK anyway.
ASKER
Andalyder,
I've looked up the information you requested.
If I don't really have to, I prefer not to install softwares on the server. So here is the infor based on visual and purchase confirmations:
1. The server:
System X 3620 M3 / 737622A
Serial: 737622A-062P812
There's another number I'm not sure of: PNSN 94Y6028 YK10LN16R0BN
Workorder number: 38CF36PM
2. The newly added memory brand is IBM: 49Y1397, 8GB, PC3L-10600 EXX RDim
I've looked up the information you requested.
If I don't really have to, I prefer not to install softwares on the server. So here is the infor based on visual and purchase confirmations:
1. The server:
System X 3620 M3 / 737622A
Serial: 737622A-062P812
There's another number I'm not sure of: PNSN 94Y6028 YK10LN16R0BN
Workorder number: 38CF36PM
2. The newly added memory brand is IBM: 49Y1397, 8GB, PC3L-10600 EXX RDim
ASKER
turns out the computer shop made an error in installation and didnt follow the slotting sequence properly.
thanks
thanks
ASKER
fixed it and hardware reserved is now only 12 MB. I guess thats fine?
ASKER
DOnt know how to check it, but I seem to recall buying the standard version.