Symantec NetBackup Manual page 76

76 Planning your deployment
About Nirvanix cloud storage
to create the storage pool, it does not contain the partner key. Consequently,
that storage pool cannot accept data from NetBackup.
Unique storage pool names. Storage pool names must be unique among all
users of the Nirvanix Storage Delivery Network.
The following OpenStorage capabilities are not supported for Nirvanix storage:
Optimized duplication
Optimized synthetics
Direct to tape (by NDMP)
Disk volume spanning of backup images
Information about supported systems is available.
See the NetBackup Release Notes.