Re: Question about Disaster Recovery Architecture Between Two Datacenters

[Andrei Boros <andrei@srr.ro>]

By SAN do you mean block storage connected via FibreChannel?

On 2026-06-18 12:38 PM, Iván Méndez Cairós wrote:
> Hello,
>
> We would like to know whether the following Disaster Recovery scenario can be implemented with Proxmox VE and what would be the recommended architecture.
>
> Our environment consists of:
>
>
>   *   A primary datacenter with more than three Proxmox VE hosts connected to a SAN storage array.
>   *   A secondary datacenter with equivalent infrastructure (Proxmox VE hosts and a storage array).
>   *   Storage replication from the primary array to the secondary array.
>   *   Both datacenters are connected through a LAN network with very low latency and sufficient bandwidth, so network performance is not a concern.
>
> Our objective is to ensure business continuity in the event of a complete failure of the primary datacenter.
>
> In such a scenario, we would like the virtual machines to be started in the secondary datacenter with as much automation as possible and with minimal manual intervention.
>
> We would appreciate your guidance regarding the following points:
>
>
>   1.  Does Proxmox VE officially support this type of architecture?
>   2.  Would you recommend a stretched cluster across both datacenters, or two independent Proxmox clusters?
>   3.  What are the requirements regarding quorum, fencing, HA, networking, and storage?
>   4.  Is it possible for Proxmox HA to automatically start the virtual machines in the secondary datacenter if the primary datacenter becomes completely unavailable?
>   5.  What are the main limitations or considerations for this design?
>   6.  What would be the recommended Proxmox architecture and best practices to achieve an automated Disaster Recovery solution in this scenario?
>
> Any recommendations, documentation, or real-world deployment examples would be greatly appreciated.
>
> Thank you very much for your assistance.
>
> Best regards,
> Iván Méndez
> Systems Administrator
>

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*ing. Andrei Boros*

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