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  • Marianne's avatar
    Marianne
    Level 6
    12 years ago

    vmtools is a requirement for snapshots to work.
    Without vmtools, VMware backup will fail with snaphot error - 156.

    The alternative is to install NBU client in the VM.

    Requirements for VM backups are listed in NetBackup 7.5.0.x for VMware Administrator's Guide http://www.symantec.com/docs/DOC5605