Today there is support for 16GFC and 10GbE, and the next speed increases on the technology roadmap are 32GFC, and 40G Ethernet and FCoE. The host and networks interfaces are always first to move to the higher speeds with storage systems transitioning last. This chart summarizes a comparison between the speeds.
Data Rate (MBps)
32GFC is expected to be available in 2014, and it’s expected that 40GFCoE and 100GFCoE which are based on 2010 standards will be used exclusively for Inter-Switch Link cores for the near future, thereby maintaining 10GFCoE as the predominant FCoE edge connection.
We all know that the volume and size of data is growing like crazy, but in many environments today’s current interface speeds are sufficient and not being fully utilized. However, moving to a higher interface speed provides the following benefits:
Increased throughput (2-3x)
Reduced number of HBAs, NICs and switch ports required to achieve similar performance
Less cabling investment
Simplified manageability with reduced port counts
Less power consumption due to less HBAs, NICs and ports
What are your thoughts? Are current interface speeds sufficient or do we need 32GFC and 40GbE now?