topic Re: How do I transform HA-PAIR VMs (deployed from Ontap Select) to Stretch Metrocluster (SDS) in General Discussion

How do I transform HA-PAIR VMs (deployed from Ontap Select) to Stretch Metrocluster (SDS)

lemurien — Wed, 04 Jun 2025 09:45:48 GMT

Hi,

Il have deployed from "Ontap Select" an HA-PAIR cluster. I have PREMIUM license on both nodes.
On Ontap Select, I don't have the option to directly deploy Stretch Metrocluster.
My question is, How do I transform HA-PAIR to Strech Metrocluster ? Is there a procedure ?
Thank you for your response.

Re: How do I transform HA-PAIR VMs (deployed from Ontap Select) to Stretch Metrocluster (SDS)

elementx — Tue, 22 Aug 2023 15:25:07 GMT

The docs say you need to move one or both nodes to be farther apart:

> Two-node MetroCluster SDS is defined as a cluster for which nodes are physically separated (different rooms, different buildings, and different data centers) by more than 300m.

https://docs.netapp.com/us-en/ontap-select/concept_ha_config.html#two-node-ha-versus-two-node-stretched-ha-metrocluster-sds

You need to make sure it meets the requirements, especially network latency and such. Also, mediator service should probably be moved to a 3rd site because unlike when the HA nodes are in the same location, colocating mediator with one of the nodes could make cluster go offline during split brain situations.

https://docs.netapp.com/us-en/ontap-select/reference_plan_ots_mcc_sds.html

Re: How do I transform HA-PAIR VMs (deployed from Ontap Select) to Stretch Metrocluster (SDS)

lemurien — Wed, 23 Aug 2023 14:36:43 GMT

ok, the two architects are the same from a system configuration point of view.