Problem with Hyper-V based virtual machines

[rmeleiro]

First of all. let me congratulate you on the superb enhancements made to Lansweeper 4. That said, I've found a problem with all my virtual servers running on Hyper-V (both Windows 2008 and Windows 2008 R2 hosts).
The reported memory for any of those virtual machines is always 64MB (image attached). Any hint?
Regards
Rui Meleiro

[rmeleiro]

Not really (at least, that I know of). Hyper-V allows you t define *any* amount of memory, provided the host has enough to spare. Memory can be expressed by any amount, although I like to keep it in standard sizes (you may define 327MB, 1000MB, etc.) As for this machine goes, it is defined as 4096MB. Please find below the output you've asked (although somewhat inconclusive).

Regards

Rui Meleiro

BankLabel Capacity Caption CreationClassName DataWidth Description DeviceLocator FormFactor HotSwappable InstallDate InterleaveDataDepth InterleavePosition Manufacturer MemoryType Model Name OtherIdentifyingInfo PartNumber PositionInRow PoweredOn Removable Replaceable SerialNumber SKU Speed Status Tag TotalWidth TypeDetail Version
BANK0 16777216 Physical Memory Win32_PhysicalMemory 72 Physical Memory DIMM1 8 1 0 Manufacturer1 17 Physical Memory PartNum1 1 SerNum1 Physical Memory 0 64 128
BANK1 16777216 Physical Memory Win32_PhysicalMemory 72 Physical Memory DIMM2 8 1 0 Manufacturer2 17 Physical Memory PartNum2 1 SerNum2 Physical Memory 1 64 128
BANK1 16777216 Physical Memory Win32_PhysicalMemory 72 Physical Memory DIMM2 8 1 0 Manufacturer2 17 Physical Memory PartNum2 1 SerNum2 Physical Memory 2 64 128
BANK1 16777216 Physical Memory Win32_PhysicalMemory 72 Physical Memory DIMM2 8 1 0 Manufacturer2 17 Physical Memory PartNum2 1 SerNum2 Physical Memory 3 64 128

[Hemoco]

In hype-v can you see how many slots you assigned and how much ram each.
Could you post the output of "wmic class win32_physicalmemory" on this machine.

[Ponchohobono]

I'm seeing this same behavior. VMs running on Hyper-V report having 64MB of RAM. The actual Hyper-V server reports the correct amount of RAM.

[rmeleiro]

Hi
I would really appreciate some feedback on this issue.
regards
Rui Meleiro

[rmeleiro]

Neither do I, I'm sure. What I can tell you is that all Hyper-V virtual machines I have here have are reported as having a memory DataWidth of 72 (and only those). That is the only variation I'm watching on the Lansweeper tables.
Regards
Rui Meleiro

[Hemoco]

The capacity is calculated in bytes (http://msdn.microsoft.com/en-us/library/aa394347%28VS.85%29.aspx)
If you count (16777216/1024/1024) * 4 slots you get 64MB

I don't know if this is a known hyper-v problem?

[rmeleiro]

Of course.
These are for VM's named 62 and 67. VM 62 is a Windows 2008 virtual machine and VM 67 is a Windows 2008 R2. Both have virtual memory settings of 4GB each. VM 62 has one virtual processor and VM 67 4 virtual processors. Host is a Windows 2008 Enterprise machine.

Regards

Rui Meleiro
Table tblphysicalmemory

Win32_PhysicalMemoryid Computername BankLabel Capacity DataWidth DeviceLocator FormFactor InterleaveDataDepth InterleavePosition MemoryType PositionInRow Speed Tag TotalWidth TypeDetail Lastchanged
98 62 BANK0 16777216 72 DIMM1 8 1 0 17 1 NULL Physical Memory 0 64 128 2010-04-20 11:38:15.987
99 62 BANK1 16777216 72 DIMM2 8 1 0 17 1 NULL Physical Memory 1 64 128 2010-04-20 11:38:15.997
100 62 BANK1 16777216 72 DIMM2 8 1 0 17 1 NULL Physical Memory 2 64 128 2010-04-20 11:38:16.003
101 62 BANK1 16777216 72 DIMM2 8 1 0 17 1 NULL Physical Memory 3 64 128 2010-04-20 11:38:16.007
107 67 BANK0 16777216 72 DIMM1 8 1 0 17 1 NULL Physical Memory 0 64 128 2010-04-20 11:39:00.953
108 67 BANK1 16777216 72 DIMM2 8 1 0 17 1 NULL Physical Memory 1 64 128 2010-04-20 11:39:00.963
109 67 BANK1 16777216 72 DIMM2 8 1 0 17 1 NULL Physical Memory 2 64 128 2010-04-20 11:39:00.980
110 67 BANK1 16777216 72 DIMM2 8 1 0 17 1 NULL Physical Memory 3 64 128 2010-04-20 11:39:01.010

Table tblphysicalmemoryarray

Win32_PhysicalMemoryArrayid Computername Location MaxCapacity MemoryDevices MemoryErrorCorrection Tag Use Lastchanged
48 62 3 3145728 4 3 Physical Memory Array 0 3 2010-04-20 11:38:16.050
52 67 3 3145728 4 3 Physical Memory Array 0 3 2010-04-20 11:39:01.087

[Hemoco]

Could you post the output of tables tblphysicalmemory & tblphysicalmemoryarray for one of these computers please.