Pure Fusion is a storage-as-code platform that aggregates multiple physical FlashArrays into a single logical
"fleet" or cloud-like storage pool. A fundamental rule of the Fusion architecture and registration process is that a specific physical FlashArray can only belong to one Fusion fleet at a time. This exclusivity ensures that the management plane (Fusion) has authoritative control over the resources, placement logic, and workload balancing for that array without conflict from another management entity.
When an Implementation Engineer encounters an error adding an array that is otherwise healthy and successfully connected to the Pure1 cloud (which acts as the mediator for Fusion), the most probable cause is that the array remains registered to a previous or different Fusion fleet. This often happens if an array was used in a proof-of-concept (POC), a lab environment, or a previous deployment and was not cleanly deregistered before attempting to add it to the new production fleet.
To resolve this, the engineer must verify the array's registration status in Pure1 or the Fusion control plane.
The array must be explicitly removed or deregistered from the conflicting fleet before it becomes available for claim by the new fleet. While Purity versions are important for compatibility, Fusion supports a range of versions, making "not running the latest " a less likely hard-stop error compared to the binary conflict of existing ownership. Similarly, existing workloads do not prevent an array from joining a fleet; Fusion can often import or manage existing resources depending on the configuration.
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