A memory resource is always contained within a <Content> section. The only property is the <rasd:AllocationUnits> tag, which signifies the amount of memory.
Example 22-11 Example memory XML<Envelope>
<References/>
<Content xsi:type="ovf:VirtualSystem_Type" id="ldg1">
<Section xsi:type="ovf:VirtualHardwareSection_Type">
<Item>
<rasd:OtherResourceType>memory</rasd:OtherResourceType>
<rasd:AllocationUnits>4G</rasd:AllocationUnits>
</Item>
</Section>
</Content>
</Envelope>