Hay que instalar virtio. Ver las recomendaciones por server.
https://pve.proxmox.com/wiki/Windows_2008_guest_best_practices
Luego importante. Instalar Balloon que es el que te permite ver la ram. Hay que instalar un driver y un servicio
https://pve.proxmox.com/wiki/Dynamic_Memory_Management
Importante. Para que el qemu agent vss funque, hacer esto:
- Press and hold the Windows key and press R to pull up the Run dialog. Alternatively, ifRun… is available from the Start Menu you can access it from there.
- Type dcomcnfg into the box and click OK. The Component Services window will appear.
- In the left portion of the window, expand the Component Services section and then expand the Computers section.
- Right-click on My Computer (listed in the Computers section) and select Propertiesfrom the pop-up menu.
- Click the COM Security tab. The My Computer Properties dialog will appear.
- Click the Edit Default… button in the Access Permissions section. The Access Permission dialog will appear.
- Under the Group or user names box, click the Add… button.
- Type Network Service into the box and click OK.
- Click OK on both the Access Permission and My Computer Properties dialogs to close them.
- Restart Windows.
ya que qemu arranca como network service y no puede prender al otro.