A short and sweet post today. In vSphere 5.0, VMware introduced support for 16Gb FC HBAs. However these HBAs had to be throttled down to work at 8Gb. In 5.1, VMware supported these 16Gb HBAs running at 16Gb. However, an important point to note is that there was no support for full end-to-end 16Gb connectivity from host to array in vSphere 5.1. To get full bandwidth, you possible had to configure a number of 8Gb connections from the switch to the storage array.
With the release of vSphere 5.5, VMware now supports 16Gb E2E (end-to-end) Fibre Channel.
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