Migration from VMware to Proxmox: Reusing Hardware Proxmox-SAN

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veralapera

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Feb 27, 2025
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What are the best storage configurations in Proxmox to access a SAN with multiple nodes while ensuring high performance, redundancy, and simultaneous access?

How do options like ZFS over iSCSI, ZFS over NVMe/TCP, Ceph compare in terms of latency, scalability, and complexity?

The goal is to migrate infrastructures from VMware to a Proxmox environment while reusing the existing hardware and achieving performance similar to VMFS over FC.

Another point is determining the best design to replicate a Ceph cluster with local disks to another cluster using a SAN storage system.

I am documenting and evaluating options, and I have some key points clear, but I would appreciate any tips or considerations you find relevant.

Thank u so much!
 
Hi @veralapera , welcome to the forum.

This topic has been discussed extensively before, but to address your points directly:
  • ZFS/iSCSI cannot be used with an FC SAN without an intermediate host acting as a proxy, which introduces a single point of failure.
  • I am not aware of a ZFS/NVMe-TCP comparable to ZFS/iSCSI PVE plugin. If such an implementation existed, it would have the same fundamental requirements as ZFS/iSCSI.
  • Ceph is optimized for local node storage. While FC SAN can be retrofitted, it is not a native or recommended approach.
  • LVM is the primary and supported option for reusing FC SAN in Proxmox.
  • We’ve created a detailed article covering FC or iSCSI storage with LVM: Proxmox LVM Shared Storage.
  • VMFS is a specialized cluster-aware filesystem with no direct equivalent in Proxmox.
  • OCFS can serve as a VMFS alternative, but installation, configuration, and maintenance are entirely up to you.
  • Ceph data replication is best handled with Ceph’s native tools. If higher-level replication is needed, consider solutions like PBS, Veeam, Zerto, or similar.
Cheers

Blockbridge : Ultra low latency all-NVME shared storage for Proxmox - https://www.blockbridge.com/proxmox
 
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Thank you for your response! I appreciate the detailed explanation. This clarifies a lot regarding the storage options in Proxmox. Cheers!
 
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