CPU USAGE I/O Wait MS

Looking for some advice on areas to look @.  I have the following:

If I look into the spike, I don't see much write or read latency back to disk from this vm:

latency is relatively low

but if I look @ I/O wait for that same period seems high, just trying to understand what else I might want to look into?  seems that IO wait could become an issue.  Should mention this is a 2008R2 windows box, running SQL server.  LSI logic for storage controller