Shutdown / Power-up VNX5400

Hi, with the mydocs portal no longer working I'm not sure where to look for what I need. We have two VNX5400s, with one replicating file and mirroring LUNs to the other. We want to shutdown the secondary temporarily so I need to know the correct procedure to do so without breaking anything.

I can see that the file replication can be "stopped" in Unisphere which presumably can then be restarted once the VNX is back online, but I'm not sure what to do about the mirrors.

We're on the latest code so I assume that doing a "Power Off" from the GUI will completely shut down the SPs. See here for a note stating that a complete power down capability was due Q3 2014.

What is the correct power-up procedure?

Thanks.