Would you please give your opinion on storage over IP, and why you think it will or won't work? Additionally, would you mind sharing your thoughts about the best way to do TCP/IP offload, specifically for network storage applications? I tend to think that offloading the entire stack in software is the better solution, rather than doing basic dataplane offload using an ASIC.
Will it work? Sure it will. But I firmly believe that as iSCSI matures, FC SANs generally will be relegated to a niche.
Don't know how much space I have for your second question, but I'll give it a try. I had a chat with my fellow Floridians at DataCore Software and discussed your question. Here was their view:
"On IP offload, the software approach should better leverage existing hardware, so it's likely to have early traction. Once mature, and the many legacy SCSI issues have been addressed, then the ASIC route will make more sense. As with many of these projections, commercial reasons rather than technical ones will drive the adoption of SCSI over IP."
I agree with DataCore up to a point. Frankly, however, I see HBAs enabled with TCP stack offload chips already being prepared by numerous manufacturers. This is old technology really. I remember writing white papers for Cisco around a similar approach used to offload IBM mainframe IP stack processing (the mainframe IP stack software was terrible in those days) to a router blade in the 1992 timeframe. Doing stack offload in silicon is much more efficient and less prone to failure than software approaches.
Hope it helps.
Dig deeper on SAN management
Related Q&A from Jon William Toigo
Sub-LUN tiering can help with performance in some environments, but according to analyst Jon Toigo, it can also get complicated with growing capacity.continue reading
Expert Jon Toigo explains why Hadoop and big data are frequently used together, but argues that Hadoop has a number of downfalls.continue reading
Storage expert Jon Toigo explains how VMware is the market leader, and why virtualization growth statistics seem more impactful than they truly are.continue reading
Have a question for an expert?
Please add a title for your question
Get answers from a TechTarget expert on whatever's puzzling you.