Hello, Prashant-
A MOID (Managed Object ID) is something by which managed objects in vSphere can be identified. It makes up the "value" portion of the object's "MORef" -- its Managed Object Reference (at the API documentation pages).
Using PowerCLI, you can check an object's MOID or MORef by getting the "MoRef" property of that object. For example, to get all VMs' MOIDs (and MORefs), you could use:
## using Get-VM
Get-VM | select name,@{n="MOID"; e={$_.ExtensionData.MoRef.Value}}
## or, faster, using Get-View
Get-View -ViewType VirtualMachine -Property Name | select name,@{n="MOID"; e={$_.MoRef.Value}}
These would output something like:
Name MOID
---- ----
testVM0 vm-417
testVM1 vm-418
anotherVM vm-419
...
Probably more useful is the MORef, as it can be used to retrieve .NET View objects. For example, say you have one vSwitch in your environment named, "myVSwitch0", but did not recall on which host it resided. You can find that out by getting the virtual switch object (Get-VirtualSwitch), checking the switch's "VMHostId" property, and then using Get-View to get the .NET View object for the given host. Like:
PS C:\> Get-VirtualSwitch -Name myVSwitch0
Name NumPorts Num Ports Mtu
---- -------- ---------- ---
myVSwitch0 128 126 1500
PS C:\> (Get-VirtualSwitch -Name myVSwitch0).VMHostId
HostSystem-host-403
PS C:\> (Get-View (Get-VirtualSwitch -Name myVSwitch0).VMHostId).Name
myHost02
The first two commands are just for illustration, the last is the one that gets the VMHost name. Just a small example of MOID/MORef usage
