# How can i create opc ua hda?

**URL:** <https://discourse.nodered.org/t/how-can-i-create-opc-ua-hda/50952>\
**Category:** General\
**Created:** [13 September 2021 09:14 UTC](https://discourse.nodered.org/t/how-can-i-create-opc-ua-hda/50952 "2021-09-13T09:14:57Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Pacolofe](https://avatars.discourse-cdn.com/v4/letter/p/77aa72/32.png) [@Pacolofe](https://discourse.nodered.org/u/Pacolofe)\
**Post date:** [13 September 2021 09:14 UTC](https://discourse.nodered.org/t/how-can-i-create-opc-ua-hda/50952/1 "2021-09-13T09:14:57Z")

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Hi, I would like to know if It's possible create a OPC UA HDA server and how.

Thanks you!!

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**Author:** ![mikakaraila](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/mikakaraila/32/37496_2.png) [@mikakaraila](https://discourse.nodered.org/u/mikakaraila)\
**Post date:** [31 October 2021 15:44 UTC](https://discourse.nodered.org/t/how-can-i-create-opc-ua-hda/50952/2 "2021-10-31T15:44:05Z")

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Instantiate node with historian, data will be in memory.

Action: "installHistorian"

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**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [30 December 2021 15:44 UTC](https://discourse.nodered.org/t/how-can-i-create-opc-ua-hda/50952/3 "2021-12-30T15:44:16Z")

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