A vSphere content library administrator is attempting to unpublish the content library, but the option is grayed out as shown in the Exhibit.
Which statement identifies the reason for not being able to unpublish?
A. The content library is optimized for syncing over HTTP.
B. A synchronization operation is in progress with this content library.
C. There are active subscriptions on this content library.
D. Underlying storage for this content library is not accessible.
A
Sure i’ts the A option and not D
A
http://docs.hol.vmware.com/HOL-2017/hol-1710-sdc-6_html_en/
Sync your content quickly between vCenter Servers over HTTP
During this task, you will distribute the content between two vCenter Servers over HTTP by using Publish-Subscribe functionality of Content Libraries. First, you will do so by using a regular workflow. Second time, you will use an optimization that was created specifically to provide a better data streaming over HTTP. Finally, you will compare two runtimes of the data streaming to see the performance gain.
This optimization option comes with limitations:
Once a library is published as optimized for syncing over HTTP (streaming optimized), you cannot revert it back (unpublish) to a local library
A streaming optimized published library cannot be used to deploy VMs.
A
It says in the client when enabling this option.