Backup of OpenVMS client fails with Status 25 when "Allow multiple data streams" is enabled in the policy.
Problem
Backup of OpenVMS client fails with Status 25 when "Allow multiple data streams" is enabled in the policy.
Error Message
Apr 25, 2019 10:37:22 AM - end Stream Discovery: Start Notify Script; elapsed time 0:00:01
Apr 25, 2019 10:37:22 AM - begin Stream Discovery: Stream Discovery
Apr 25, 2019 10:37:44 AM - end Stream Discovery: Stream Discovery; elapsed time 0:00:22
Apr 25, 2019 10:37:44 AM - begin Stream Discovery: Stop On Error
Operation Status: 0
Apr 25, 2019 10:37:44 AM - end Stream Discovery: Stop On Error; elapsed time 0:00:00
Apr 25, 2019 10:37:44 AM - begin Stream Discovery: End Notify Script
Apr 25, 2019 10:37:44 AM - Info RUNCMD (pid=12704) started
Apr 25, 2019 10:37:44 AM - Info RUNCMD (pid=12704) exiting with status: 0
Operation Status: 0
Apr 25, 2019 10:37:44 AM - end Stream Discovery: End Notify Script; elapsed time 0:00:00
Operation Status: 25
Apr 25, 2019 10:37:44 AM - end Parent Job; elapsed time 0:00:23
Operation Status: 25
cannot connect on socket (25)
Cause
OpenVMS clients are unique in that they only run BPCD to communication to Master/Media servers.
The latest releases of NetBackup use PBX and certificated connections between hosts. Therefore, there is no way a VMS client can communicate using newer methods that utilize PBX and Certificates in the latest releases of NetBackup.
When the OpenVMS policy is enabled for Multiple Data Streams, the NetBackup Master will attempt to connect to the client for Streams Discovery and fail because of the incompatible communication methods.
Solution
Disable "Allow multiple data streams" in the policy attributes
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