# LINSTOR on Two Nodes?

**URL:** <https://forums.linbit.com/t/linstor-on-two-nodes/211>\
**Category:** LINSTOR\
**Created:** [August 1, 2024, 8:41pm UTC](https://forums.linbit.com/t/linstor-on-two-nodes/211 "2024-08-01T20:41:09Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![fx991](https://yyz1.discourse-cdn.com/flex003/user_avatar/forums.linbit.com/fx991/32/61_2.png) [@fx991](https://forums.linbit.com/u/fx991)\
**Post date:** [August 1, 2024, 8:41pm UTC](https://forums.linbit.com/t/linstor-on-two-nodes/211/1 "2024-08-01T20:41:10Z")

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Hi,

I’m giving LINSTOR a try and want to install it. How many nodes are required at least? I did not find an answer to that questions in the documentation.

Does a two node system suffice? Or do I need at least a third (maybe diskless) node for linstor to work?

For testing I’d like to use an existing 2 Node Proxmox VE-Cluster (with quorum device).

Regards,  
Jack

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**Author:** ![kermat](https://yyz1.discourse-cdn.com/flex003/user_avatar/forums.linbit.com/kermat/32/21_2.png) [@kermat](https://forums.linbit.com/u/kermat)\
**Post date:** [August 1, 2024, 9:13pm UTC](https://forums.linbit.com/t/linstor-on-two-nodes/211/2 "2024-08-01T21:13:14Z")

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TLDR: You can use your two existing Proxmox VE nodes to test LINSTOR.

Technically, only one node is required for LINSTOR to be able to provision volumes. A `combined` type LINSTOR controller + satellite could be used as a storage plugin for Proxmox VE.

You would need three nodes to enable quorum based rules for the replicated DRBD devices.

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**Author:** ![forbin](https://avatars.discourse-cdn.com/v4/letter/f/5e9695/32.png) [@forbin](https://forums.linbit.com/u/forbin)\
**Post date:** [August 4, 2024, 1:51am UTC](https://forums.linbit.com/t/linstor-on-two-nodes/211/3 "2024-08-04T01:51:14Z")

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The following 2-node setup works fine for testing, but it won’t provide quorum. You can add a diskless tiebreaker node for that.

Node A: Linstor Controller + Linstor Satellite  
Node B: Linstor Satellite

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**Author:** ![linbiteh2025](https://avatars.discourse-cdn.com/v4/letter/l/b4bc9f/32.png) [@linbiteh2025](https://forums.linbit.com/u/linbiteh2025)\
**Post date:** [April 26, 2025, 5:46pm UTC](https://forums.linbit.com/t/linstor-on-two-nodes/211/4 "2025-04-26T17:46:25Z")

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Could you do something like below to setup a two node cluster that has storage? I am looking at doing something similar where I have two nodes that have 10g direct links plus a single 1g adapter and storage that I would use and a 3rd node that doesn’t have storage and would just house the controller. Would that prevent the split brain and have quorum based rules for replicated DRBD devices, or do I need quorum based rules if I just do a replica of 2?

NodeA: Linstor Satellite  
NodeB: Linstor Satellite  
NodeC: Linstor Controller

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**Author:** ![candlerb](https://avatars.discourse-cdn.com/v4/letter/c/c5a1d2/32.png) [@candlerb](https://forums.linbit.com/u/candlerb)\
**Post date:** [May 10, 2025, 5:55pm UTC](https://forums.linbit.com/t/linstor-on-two-nodes/211/5 "2025-05-10T17:55:38Z")

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I believe you need to make NodeC be a Linstor Satellite too - so it’s a “combined” node - although it doesn’t need to provide any storage (simply don’t create any storage pools on NodeC)

For resource groups with a replica count of 2, Linstor will automatically create a third diskless drbd resource to avoid split-brain.