NDMP functionality question

[Merk, Kim-Hendrik]

Hello,

I am trying to implement Bareos with NDMP backups, we have a SAN network where the Bareos server, our NAS and a Tape library are all connected.

My question is, is it possible to tell the NAS to write directly to a Tape drive while the Bareos server independently controls the tape robot to move the tapes?

 

I have not found anything like this in the official documentation and do not have enough background knowledge of which options can be combined to make this work.

 

Thank you very much

 

Kim-Hendrik

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[Andreas Rogge]

Am 25.03.26 um 10:44 schrieb 'Merk, Kim-Hendrik' via bareos-users:

> My question is, is it possible to tell the NAS to write directly to a
> Tape drive while the Bareos server independently controls the tape robot
> to move the tapes?

That's what Bareos calls the NDMP_NATIVE mode.
See
https://docs.bareos.org/TasksAndConcepts/NdmpBackupsWithBareos.html#ndmp-native

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[Merk, Kim-Hendrik]

Thanks for the quick response, I have already used this as the basis of the implementation.
I can see an example where the tape Robot control is passed to the NAS storage.
We want to control the tape agent directly to facilitate Catalog backups and Windows server backups on the same tape drive.
I could not see something like this in the documentation.

Kind Regards
Kim-Hendrik

-----Ursprüngliche Nachricht-----
Von: bareos...@googlegroups.com <bareos...@googlegroups.com> Im Auftrag von Andreas Rogge
Gesendet: Mittwoch, 25. März 2026 11:17
An: bareos...@googlegroups.com
Betreff: Re: [bareos-users] NDMP functionality question

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[Andreas Rogge]

Am 25.03.26 um 12:00 schrieb 'Merk, Kim-Hendrik' via bareos-users:

> I can see an example where the tape Robot control is passed to the NAS storage.
> We want to control the tape agent directly to facilitate Catalog backups and Windows server backups on the same tape drive.

You cannot share a tape drive between a Bareos SD and an NDMP Filer
doing NDMP_NATIVE. You will need a partitionable library for that and
configure one partition to be used by Bareos and another one for NDMP
(another tape library would work too, of course).

While it might be possible to implement sharing on the Bareos end, I
don't know if the NDMP end is able to share a drive at all.

Best Regards,
Andreas

[Merk, Kim-Hendrik]

We have 3 Drives in the Library and would dedicate one to the Catalog backups (and the Windows Clients) and the other two to the NDMP Filer.
We are just unsure how the robot control would work. If we can just talk to the robot on both paths (Bareos --NDMP-> NDMP Filer --SAN -> tape robot and Bareos --SAN-> tape robot), or if there is some special consideration needed on the Bareos end.

Thank you

Kim-Hendrik

-----Ursprüngliche Nachricht-----
Von: bareos...@googlegroups.com <bareos...@googlegroups.com> Im Auftrag von Andreas Rogge

Gesendet: Mittwoch, 25. März 2026 14:26

An: bareos...@googlegroups.com
Betreff: Re: [bareos-users] NDMP functionality question

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[Andreas Rogge]

Am 25.03.26 um 14:36 schrieb 'Merk, Kim-Hendrik' via bareos-users:

> We have 3 Drives in the Library and would dedicate one to the Catalog backups (and the Windows Clients) and the other two to the NDMP Filer.
> We are just unsure how the robot control would work. If we can just talk to the robot on both paths (Bareos --NDMP-> NDMP Filer --SAN -> tape robot and Bareos --SAN-> tape robot), or if there is some special consideration needed on the Bareos end.

For that you'd partition the library which leaves you basically with two
libraries. One will be accessed via the Bareos SD, the other one through
the NDMP system.