I have a questions about the Vmware ESXi 4.0 memory and virtual machine memory allocation

Time                      Balloon      Active            Granted       Consumed
10/12/2011 1:44:00 PM      0      16051200      16896000      16888220
10/12/2011 1:44:20 PM      0      15882240      16896000      16888228
10/12/2011 1:44:40 PM      0      15882240      16896000      16888228
10/12/2011 1:45:00 PM      0      15882240      16896000      16888232

I have 3 virtual machines that when I look at the Virtual Macines list the "guest memory" shows a value in between  97-99 % for all 3 machines  (It shows that it's in the red)
Above is the Memory report for one of the Virtual Machines, should the value of "granted and consumed be so close in value?  The "host memory" allocated for the above virtual machine is 16718 mb.  Can someone help me pin point if I might possibly have a problem?  Thank you in advance for your help!!
lamrski
LamrskiAsked:
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Active memory is is what the VMkernel believes is currently being actively used by the VM.

This is the value to watch for capacity planning.

So Active Memory in the VMs is approx 15GB, where you've allocated 16GB, so that's why you have a memory alert.

But what are the VMs, what's the baseline, and is this usual?

What are the servers, SQL, Terminal Servers, Citrix?
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LamrskiAuthor Commented:
The VM with data listed above is our main  exchange server.   The other 2 which are giving alerts are another exchange server and our only domain controller..  I am new here, therefore I do know what the baseline should be.
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Alex--Commented:
http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1002604

... may help.

Active is the amount of memory the VM is actively using.
Granted the total amount of memory the VM has been given/assigned.

Consumed is the total amount of memory the Host is using for the VM.

By the looks of it, your VMs are running near max memory utilization.  I've seen SQL servers do that without side effects.

Are you noticing any performance issues within the VM?
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Consumed Host Memory is the amount of physical memory that has been allocated to the virtual machine.

Okay, so you've allocated out 16GB of memory to your Exchange Servers, and at present they are using a fair proportion of that memory, e.g. 15GB, I would look at the performance chart history, and see if this is just today, of has this been like it for the last week or month.

If this is regular, I would be inclined at the next maintenance Window to maybe increase the memory to the virtual machine.

But check the Exchange Server, no one is logged on interaccftively, running flash, applications, Virus Scanners etc
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Veeam Monitor for free

If you want a quick tool, to help you with wanting to know all the individual elements, then I would suggest using Veeam Monitor Free Edition

Veeam Monitor leverages Veeam Business View™ to enable performance monitoring, alerting and reporting for virtual machine groups based on criteria such as business unit, department, location, purpose, service-level agreement or any other criteria you define. This ability to perform business-centric monitoring helps to identify the business impact of a virtual infrastructure’s performance and respond accordingly. It also allows you to configure flexible alerts based on known server type characteristics and the potential business impact of an outage for more granular service-level management. You can also create targeted reports showing only the data relevant to specific business units, departments or types of server.
More features

Source
http://www.veeam.com/esxi-monitoring-free.html.


Identify memory bottlenecks and remove: Memory Performance Analysis and Monitoring

Do not worry yourself with Granted or Consumed.

Watch the Active Value.
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LamrskiAuthor Commented:
This may be a dumb question but where do I find at the "performance chart history"...I'm new to VMware as well?  Thank you for your help!!!
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Select the Virtual Machine, and click the Performance Tab, and select the charts you require
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LamrskiAuthor Commented:
I had to drop this topic  .. But I really appreciate the help
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