reource types supported by vSphere?

Hi all

I'm looking for information about the resource types and suptymes supported by vSphere

Using an example:

<ovf:Item>
        <rasd:ElementName>Harddisk 1</rasd:ElementName>
        <rasd:HostResource>ovf:/disk/lamp</rasd:HostResource>
        <rasd:InstanceID>5</rasd:InstanceID>
        <rasd:Parent>4</rasd:Parent>
        <rasd:ResourceType>17</rasd:ResourceType>
</ovf:Item>

Specifically I'm interested in the resorce types supported for storage (such as 17, disk drive or 32 storage volume)

Is it supported any other storage resource type than 17?

I'm not able to find the documents that reflects the supported resource types. Any pointer?

Thanks a lot

Regards