Since upgrading SmartClients to NVBU 10.x or 11.x, ANSI/ASF tapes previously used by HP Data Protector cannot be blanked by NetVault.
When attempting to blank such tapes the operation fails with:
Media 'I--OMN2' (XX600N5) in 'DRIVE 1:NV' is in use, cannot be blanked.
Using NVBU 9.2 all tapes can be blanked.
This issue has been confirmed as a defect in Bug 31284.
Workaround: