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Face off: 10GBase-T and SFP+ Direct Attach

4/28/2011 02:56 PM EDT
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docdivakar
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re: Face off: 10GBase-T and SFP+ Direct Attach
docdivakar   6/9/2011 9:49:45 PM
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@Yogi Patel: thank you for the summary; how ever it overlooks many benefits of SFP+ ports: 1. Ethernet, by its definition and its operation, is lossy; if a packet is dropped, it is retransmitted; fiber channel, is not. So a marriage of LAN & SAN is not attractive with Base-T. It is a much needed piece of technology that is growing with virtualization. 2. The converged enhanced ethernet (CEE) is partly the answer (by re-encapsulating lossy ethernet packets to loss-less fiber channel compliant packets) to which SFP+ is the most cost-effective solution. 3. Interoperability between copper and fiber: SFP+ ports can do it while RJ45 parts do not. 4. Combining Data Center ethernet with Metro & Carrier ethernet is only possible with SFP+. I think 10Gig to desktop is best done by base-T once the power dissipation comes down. Dr. MP Divakar

David Omar
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re: Face off: 10GBase-T and SFP+ Direct Attach
David Omar   5/3/2011 12:02:35 PM
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I think this misses the main point. SFP+ direct connect cables have a place mainly where SFP+ based fibre equipment is installed. Fibre can give links of 10's of km. SFP+ direct connect cables allow the use of spare SFP+ ports locally. The main planning decision will be between fibre and Base-T, but many installations will probably find both co-existing.

Kinnar
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re: Face off: 10GBase-T and SFP+ Direct Attach
Kinnar   4/29/2011 5:46:02 PM
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After reading this article it becomes very much clear that if you want to have 10G connectivity in your server room simply buy at 10GBase-T Ethernet Card and Connect it with the capable switch, there is no need to consider the optical option if you want to have seamless operations.

Sanjib.A
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re: Face off: 10GBase-T and SFP+ Direct Attach
Sanjib.A   4/28/2011 5:32:35 PM
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Thanks for an informative article. The contents of the tables are not very readable. If the fonts in the tables are enlarged or if separate links are provided to open the tables on separate windows, that shall help!

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