# communication between otrhanc servers

**URL:** https://discourse.orthanc-server.org/t/communication-between-otrhanc-servers/3540
**Category:** General
**Created:** [May 24, 2023, 8:25am UTC](https://discourse.orthanc-server.org/t/communication-between-otrhanc-servers/3540 "2023-05-24T08:25:27Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![Spahi](https://discourse.orthanc-server.org/letter_avatar_proxy/v4/letter/s/35a633/32.png) [@Spahi](https://discourse.orthanc-server.org/u/Spahi)
#### Post date: [May 24, 2023, 8:25am UTC](https://discourse.orthanc-server.org/t/communication-between-otrhanc-servers/3540/1 "2023-05-24T08:25:28Z")

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So far I have used several conquest dgate servers. I would switch to Orthanc for various reasons. Without changing the structure, how can I make it so that if I query one server, all my other servers images are available (which is why multiple servers are better, because I can put old images on slower storage)  
I set this with the “VirtualServerFor” parameter for conquest.  
I can’t find such an option for Orthanc. “DicomModalities” is set up for the other server.

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### Author: ![alainmazy](https://discourse.orthanc-server.org/user_avatar/discourse.orthanc-server.org/alainmazy/32/1576_2.png) [@alainmazy](https://discourse.orthanc-server.org/u/alainmazy)
#### Post date: [May 25, 2023, 6:55am UTC](https://discourse.orthanc-server.org/t/communication-between-otrhanc-servers/3540/2 "2023-05-25T06:55:08Z")

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Hi Peter,

Right now, there are no such built-in feature in Orthanc.

It is actually possible to implement it through a [python plugin](https://book.orthanc-server.com/plugins/python.html#handling-dicom-scp-requests-new-in-3-2) but I don’t think there’s a reference implementation already available.

Best regards,

Alain