According to the Design Guide for Cisco Unity Virtualization (May 7, 2010), iSCSI is not supported. Why is this? Is this limitation VMWare or Unity version-specific? Is iSCSI supported in VSphere 4.0 (VM 7.0) or later, or with later versions of Unity?
It's because Cisco didn't test iSCSI. Cisco's internal support policy goes something to the effect of "If the BU didn't test that exact scenario, TAC doesn't have to support it."
None of us will be able to comment in a public forum of what may or may not be added in the future. All we can do is talk to what is publiclly documented. The Unity Virtualization document specifies Fibre Channel. The best direction you can get is what Cisco is doing more recently for virtualization. All of that requires FC or FCoE as well though; no iSCSI love.
These are the paths to get to each CCX logs through CLI. They may be helpful if you are having issues accessing RTMT or downloading logs through it.
If you want to download them you have to prefix "file get " and you can add one of the options (re...