On macOS Sierra 10.12.3 I have a new MacBookPro connected to a Pegasus 2R4, a Pegasus3R4, and a Thunderbolt 27 inch Monitor. The Pegasus 2 is connected to the monitor and the Pegasus 3 is connected to the MacBook USB-C port. Every thing is working well when operating.
I need advice on how to shutdown easily and startup without having to open the clamshell. If I do a regular shutdown, I must open the clamshell to start the system up again. If I just put it to sleep, a problem occurs from time to time. The monitor shuts down, the 2 Pegasus units shutdown and it seems to be off, But in a few minutes the Pegasus units come back on and stay that way for 2 or 3 minutes and then shutdown again. I have observed this happening even hours later. I thought it might be the Time Macine backup so I turned that off, but still sometimes get the restart and then shutdown of the Pegasus disks right after putting to sleep. Any advice on settings to control this? Other than this behavior it all works well.