I use esxi6.0 as our hosts. For years I have had the different Window's VM servers backing up to iscsi targets (via wbadmin). The Iscsi initiator on the Window VM has its own backup drive on the iscsi target (its main drives are all on DAS on the esxi host). It has worked great (and its free)...
After upgrading to esxi 6.0, the Adaptec disk monitoring no longer works. I tried removing and reinstalling both arc-cim-provider and arcconf . The esxcli software vib list commands are shown below.
esxcli software vib list | grep aacraid
scsi-aacraid...