First of all I need to say that our team loves proxmox 2.1. We have been reading all documents on proxmox clustering, high availability, storage design across the net as well as pve.proxmox.com. We are preparing our first cluster design consist of three Dell 1950s (with Drac 5) with an MD3000 for SAN. Each 1950 server should connect to the MD3000 through a SAS 5/e pci-e controller and locally boot through Perc5/i raid controller through local drive. We did a test install of Proxmox (updated to 2.1-14) on the first node and could not access the MD3000 SAN and gving I/O errors. I was wondering if any one in the forum has used similar configuration and had success. Thanks in advance.