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no-senders; approved; loop; banned-address; emergency; member-moderation; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="iso-8859-1" X-Content-Filtered-By: Mailman/MimeDel 3.3.10 X-Mailman-Version: 3.3.10 Precedence: list List-Id: Proxmox VE user list List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: Hello, We are evaluating the replacement of an existing VMware vSphere infrastruct= ure with Proxmox VE and would like to confirm the feasibility and support c= onsiderations of the proposed architecture. The current environment is distributed across two data centers and uses a N= etApp MetroCluster storage system. The new design would consist of: * One Proxmox VE cluster distributed across both data centers. * Approximately 12 Proxmox nodes per site. * NetApp MetroCluster providing synchronously replicated shared storage. * Fibre Channel connectivity between the Proxmox hosts and NetApp. * Two independent FC fabrics based on Brocade G720 switches. * Dual-port FC HBAs in each Proxmox host. * Linux multipath/ALUA configured on every host. * Shared LVM storage on top of the FC LUNs. * Proxmox HA enabled for the virtual machines. * Redundant Corosync links between both sites, with latency below 5 ms. * A QDevice located in a third failure domain. NetApp documentation explicitly lists MetroCluster support for Proxmox VE u= sing SAN protocols, including Fibre Channel: https://docs.netapp.com/us-en/netapp-solutions-virtualization/proxmox/proxm= ox-ontap-architecture.html#solution-architecture However, we would like to confirm the following points from the Proxmox sid= e: 1. Is a stretched Proxmox VE cluster using shared FC storage provided by= NetApp MetroCluster considered a supported and recommended configuration? 2. Is shared LVM over a multipath FC device the appropriate storage conf= iguration for this design? 3. Are there any specific multipath, ALUA or LVM configuration requireme= nts for NetApp ONTAP/MetroCluster? 4. During a MetroCluster switchover, SAN I/O may be temporarily interrup= ted. Are there any Proxmox, multipath or HA timeout parameters that should = be adjusted to tolerate this process and prevent unnecessary fencing or VM = failures? 5. In the event of a complete site failure, would Proxmox HA be able to = restart the affected VMs on the surviving site once the MetroCluster switch= over has completed and the FC LUNs are accessible again? 6. Is the proposed QDevice design sufficient to preserve quorum if commu= nication between the two data centers is lost? 7. Are there any known reference architectures, deployment guides or pro= duction experiences involving Proxmox VE and NetApp MetroCluster over Fibre= Channel? We understand that the exact server, HBA, switch, ONTAP and firmware versio= ns must also be validated through the corresponding vendor interoperability= matrices. Any recommendations or experiences with a similar architecture would be gre= atly appreciated. Best regards, Iv=E1n M=E9ndez