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Status Under review
Workspace Storage Fusion
Created by Guest
Created on Mar 4, 2026

RELATED IDEAS

MetroDR and RegionalDR combination

Be able to have a "local" MetroDR pair that also replicates asynchronously to a third cluster using RegionalDR.

This is not available today, as Ramen only supports peering two clusters. Anything that involves more than two clusters is not supported.

We now have a couple of customers that actually need this though.

So far we have advertised clusterHA + RegionalDR as an alternative, but some customers actually need the cluster separation that MetroDR provides in addition to the RegionalDR insurance.

Idea priority Medium
  • Guest
    Mar 4, 2026

    This request is a refresh of SPFUS-I-34 that has existed since Apr 27, 2023. Clients around the globe are asking for Metro DR + Regional DR. The description in this idea is a good start but needs more detail to reflect the technical requirements of what the storage cluster is doing versus the application cluster(s) in this metro + regional topology.

    IBM development has documented at lest four potential topologies As of today, we believe topology 1 is available - HCI-1 & HCI-2 are stretched across a metro distance with an added arbiter in metro distance, both storage and application share a single cluster.

    The desire is to start with a replica of how ECE worked (Topology 3) where the storage cluster is stretched across HCI-1 + HCI-2 + arbiter and application clusters are independent, non-hosted clusters on HCI-1 or HCI-2.

    Recently, clients have been demanding Metro DR w/Hosted Clusters (Topology 2) where the storage cluster is stretched like Topology 3 but the application clusters are hosted clusters.

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