Are there solutions available (or being developed) that support Dynamic Multi-Pathing (DMP) for access to storage...
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over IP from a server? I am concerned about the NIC card or network cable becoming a single point of failure. I am aware of solutions for FC and SCSI (e.g. Veritas Volume Manager DMP), but I have not encountered any solutions for acessing storage over Ethernet.
It only seems nature that alternate pathing support be added to the drivers for IP-based storage, but no one has done this yet. From what I've heard, those companies that are trying to raise IP to acceptable performance by embedding par of the TCPIP protocol stack into cutom NIC cards are trying to use their same drivers, so they obviously haven't addressed the problem yet.
I suspect we'll see it addressed sometime next year. I would wait for the new NIC cards to settle out anyway. You are making an infrastructure change when you go that direction, so you want to be very sure about what you have.
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