> Sometimes the mpxio detection doesn't work properly. You can try to whitelist
> them,

And I said:
> Thanks Richard, I was hoping I hadn't just made up my vague memory of such
> functionality.  We'll give it a try. 

That did the trick.  I added these lines to /kernel/drv/scsi_vhci.conf,
at the end of the file:

scsi-vhci-failover-override = 
    "WD      WD4001FYYG-01SL3", "f_sym";  # WD RE 4TB SAS HDD

A reboot was involved, as I wasn't able to coax the system into re-reading
the scsi_vhci.conf file using "update_drv scsi_vhci", nor by unplugging
and replugging the JBOD's SAS cables, "cfgadm -c unconfigure c49", etc.

I'm off to exercise it with filebench tomorrow....

Thanks and regards,


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