Once T120712 is completed, the newly installed disks will need to be setup into a software raid1 and have the lvm extended onto these disks for increased storage space.
Discussion on past tasks T119579 with @Smalyshev shows that we need to extend space in place and not reimage these systems at this time. Once the holidays are past and everyone on his team is back from holiday/vacation, we can then look at reimaging these one at a time (in January.)
So this task can track initial implementation, and then stall until January for reimage.