Being using ZFS since it's out and using Solaris/OpenSolaris/OmniOS for my centralized storage server for a few years. The storage server provides VMware datastore through NFS mainly, some iSCSI (used to do FC) for specific applications, then NFS/SMB for other servers and workstations at home...
This is a continuation of previous discussion here:
NFSv3 vs NFSv4 vs iSCSI for ESXI datastores
OK, so there is good news and bad news about connectx-3 and iser on esxi.
First the bad news.
The bad news is, there are issues with flow control which might or might not be able to be resolved...
Just noticed this on Mellanox site today - iSer driver for VMWare 6.5.
There is a new tab called 'iSer Download'.
Seem there's support for ConnectX-3 Eth drivers as well.