Limitations
Traditional NetBackup agent and client-side encryption or agent and client-based compressed backups are unavailable for scanning using Instant Access mount points. MSDP KMS-based encryption techniques are recommended and can be configured (See the NetBackup Security and Encryption Guide.)
User archive backups are unavailable for scanning using Instant Access mount points.
For VMware: Incremental backup images without accelerator feature enabled are not supported for VMware workload.