Aligning WD10EZEX drive using the WD Align tool

FWIW, I notice that the Acronis System Report includes the following line:

AZ Alignment enabled: 1

The following document suggests that support for the above was added in Version 2.0.11:
http://support.wdc.com/download/notes/Windows_WD_Align_Version_2_0_111_Release_Notes.pdf

It might be irrelevant, but I can’t find any information on this feature.