list wmi namespace

Last week I published an article about how to set your host reserves in VMM Manager. I deliberately left off with a manual task. Changing the host reserves only affects new hosts added to your VMM environment. What about the ones that are already there? You had to manually change them.

Using PowerShell on a client that has VMM Manager installed on it, you can change the Host Reserves of all Hosts that are already on the system

Open PowerShell (You must do this on a client that has VMM Manager installed on it)
Type Add-PSSnapin Microsoft.SystemCenter.VirtualMachineManager and press Enter.
This adds in cmdlets that are specific to Virtual Machine Manager.
Now type Get-VMHost | Select-Object ComputerName, CPUPercentageReserve, NetworkPercentageReserve, DiskSpaceReserveMB, MaxDiskIOReservation, MemoryReservationMB and press Enter.
This will show you the current Host Reserves on each host.

We can use the 5 reservation properties to change the host reservations. For simplicity, we are only going to change the CPU and Network percentage reserves.
Get-VMHost | Set-VMHost –CPUPercentageReserve 25 –NetworkPercentageReserve 35

If we re-execute our first command, we get the following:

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How to list all the AD LDS instances on a server

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Error icon when creating a GPO Preference drive map

You may not have an error at all. Take a look at the drive mapping below. The red triangle is what threw us off. It is not an error. It is simply a color representation of the Replace option of the Action field in the properties of the drive mappings. Create action This give you a green triangle. The Create action creates a new mapped drive for users. Replace Action The Replace action gives you a red triangle. This action will delete and recreate mapped drives for users. The net result of the Replace action is to overwrite all existing settings associated with the mapped drive. If the drive mapping does not exist, then the Replace action creates a new drive mapping. Update Action The Update action will have a yellow triangle. Update will modify settings of an existing mapped drive for users. This action differs from Replace in that it only updates settings defined within the preference item. All other settings remain as configured on the ma...

Jason Yoder, MCT

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