Information Technology Reference
In-Depth Information
<Info>Virtual disk information</Info>
<Disk ovf:capacity=”30” ovf:capacityAllocationUnits=”byte * 2^30” \
ovf:diskId=”vmdisk1” ovf:fileRef=”file1” \
streamOptimized” ovf:populatedSize=”2744057856” />
</DiskSection>
<NetworkSection>
<Info>The list of logical networks</Info>
<Network ovf:name=”VLAN19”>
<Description>The VLAN19 network</Description>
</Network>
</NetworkSection>
<VirtualSystem ovf:id=”core2k8r2-01”>
<Info>A virtual machine</Info>
<Name>core2k8r2-01</Name>
<OperatingSystemSection ovf:id=”1” \
vmw:
osType=”windows7Server64Guest”>
<Info>The kind of installed guest operating system</Info>
<Description>Microsoft Windows Server 2008 R2 (64-bit) \
</Description>
</OperatingSystemSection>
<VirtualHardwareSection>
<Info>Virtual hardware requirements</Info>
<System>
<vssd:ElementName>Virtual Hardware Family</vssd:ElementName>
<vssd:InstanceID>0</vssd:InstanceID>
<vssd:VirtualSystemIdentifier>core2k8r2-01
</vssd:VirtualSystemIdentifier>
<vssd:VirtualSystemType>vmx-08</vssd:VirtualSystemType>
</System>
</VirtualHardwareSection>
</VirtualSystem>
</Envelope>
The OVF specii cation allows two different formats for OVF templates, which we've dis-
cussed briel y. OVF templates can be distributed as a set of i les, like the one we exported from
vCenter Server in the previous section. In this case, it's easy to see the different components of
the OVF template, but it's a bit more complicated to distribute unless you are distributing the
OVF template as a set of i les on a web server (keep in mind that vCenter Server and VMware
ESXi can deploy VMs from an OVF template stored at a remote URL).
OVF templates can also be distributed as a single i le. This single i le has a name that ends in
.ova and is in TAR format, and the OVF specii cation has strict requirements about the place-
ment and order of components within the OVA archive. All the components that we've already
described are still present, but because everything is stored in a single i le, it's more difi cult to
