Thanks to Community member Jay Munzner for sending in his very detailed BlueArc Storage ZenPack. This Monitoring ZenPack provides a number of SNMP-based templates for monitoring for BlueArc storage devices.
BlueArcServer- BlueArc Cluster template
ClusterNode- BlueArc cluster node template to monitor node specific ops (nfs, cifs, fc, etc)
ethernetCsmacd- Ethernet interface template for BlueArc with 75% utilization threshold