content_image/974926.jpg
Figure 3-10 on page 95 shows the power control settings window of the Storage Management GUI. 

<img src='content_image/974926.jpg'>

In addition, the following switches in the management enclosure (ME) of a DS8900F are accessible when the ME cover is open: 

GLYPH<SM590000> Local mode jumper connector. This connector on the local remote switch card is for service use only and there is a plug to set the system in the local power control mode. 

GLYPH<SM590000> The local power on/local force power off switch (white switch) is also located on the local remote switch card in the ME. This switch can manually power on or force power off the complete system if the local remote switch card is in local power control mode. When the local/remote switch card is in remote power control mode (nothing plugged in the local mode jumper connector), the HMCs are in control of power on/power off (this is the default condition for client usage). 

GLYPH<SM590000> Powering Off the storage system with the white switch is a forcefully shutdown and includes also the procedure of moving NVS data to the flash portion of the NVDIMMs which needs to be destaged on the next system power on and boot up. 

Important:  The Local/remote power off switch (white switch) must not be used by DS8900F users. The switch can be used only under certain circumstances and as part of an action plan or problem determination that is performed by an IBM SSR. 

