vSphere Web Client User Label Conversion
A vSphere 5.0/5.1 storage profile can reference user labels displayed in the vSphere Web Client. Users can associate a datastore with a user label. When you upgrade to vSphere 5.5, any existing 5.0/5.1 user labels will be converted into datastore tags.
A converted policy profile contains one subprofile for each label referenced by the original vSphere 5.0/5.1 profile.
The following figure shows the conversion of a vSphere 5.0/5.1 profile that references a system label “Vendor1Gold” and a user label “MyDatastores”. When you upgrade to vSphere 5.5, the system converts the profile into Storage Policy API elements.
 
Converted Legacy Requirement Profile