I'm looking for some advice from the forum on when and where to use the SCSI-3 Flag.  I'm implementing a few VMax arrays and EMC has the SCSI-3 flag enabled on all my FAs.  My understanding is that it doesn't hurt the host if the flag is enabled on the FA port, so as a best practice why not enable it for hosts that require it.  It's a better use to use the port override command to set SCSI-3 to disabled for hosts that have issues with the flag being enabled.

Thoughts?

When I'm creating LUNs, I also notice there is a box in the SMC to enable SCSI-3, so my question is: Do we have to enable SCSI-3 on both the port and the LUN, or is this just another level of granularity for enabling SCSI-3.

My standard environments are SUN, VMWare, Windows, AIX, and various Linux flavors.  Oracle is common as well as various clustering techniques.

Finally, what are the most common use cases people have seen for the SCSI-3 being required.

Thanks for your input.