IBM N6270, Hardware And Service Manual

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For... Issue the command...
Clustered Data ONTAP
storage failover takeover -ofnode
target_node_name
Shutting down the node in a stand-alone system
For a node that is in a stand-alone configuration, you must perform a clean
shutdown to ensure that all data has been written to disk and disconnect the
power supplies.
Procedure
1. Enter the following commands from the system console:
If your system is configured in... Then issue this command...
7-Mode
halt
Clustered Data ONTAP
halt local
After you issue the command, wait until the system stops at the LOADER
prompt.
Attention: You must perform a clean system shutdown before replacing
system components to avoid losing unwritten data in the nonvolatile memory
(NVMEM). The NVMEM LED is located on the controller module to the right
of the network ports, marked with a battery symbol. If the NVMEM LED is
flashing, there is content in the NVMEM that has not been saved to disk. You
need to reboot the controller module and proceed from the beginning of this
procedure. If repeated attempts to cleanly shut down the controller module fail,
be aware that you might lose any data that was not saved to disk.
1
NVMEM LED
2. If you are not already grounded, properly ground yourself.
3.
Turn off the power supplies, unplug the power cords from the power source,
and remove the power cords.
Opening the system
To access components inside the controller module, you must open the system.
LNK LNK
0a 0b
0c
0d e0b
e0a
c0b
c0a
!
1
Figure 23. NVMEM LED
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IBM System Storage: N6200 Series Hardware and Service Guide