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##### Cold Service, Replaceable by Customer

The following table identifies the components that require the server to be powered down. These components can be replaced by customers.

Cold Service (power down system and unplug power cables) | Notes
--- | ---
SATA optical drive/USB assembly | Remove any media
DDR3 DIMMs |
System battery |
I/O cards (PCIe/XAUI) |
SP |
SCC |
Internal USB |

Cold service procedures require that you shut the server down and unplug the power cables that connect the power supplies to the power source. To shut the server down, perform the following steps:

1. Log in as superuser or equivalent.

   Tip - Depending on the reason for shutting down system power, you might want to view server status or log files. You also might want to run diagnostics before you shut down the server.

2. Notify affected users that the server will be shut down.

   Refer to your Oracle Solaris system administration documentation for additional information.

3. Save any open files and quit all running programs.

   Refer to your application documentation for specific information on these processes.

4. Shut down all logical domains.

   Refer to the Oracle Solaris system administration documentation for additional information.

5. Shut down the Oracle Solaris OS.

   Refer to the Solaris system administration documentation for additional information about logical domains.

6. Switch from the system console to the `->` prompt by typing the `#.` (Hash Period) key sequence.

7. At the `->` prompt, type the `stop /SYS` command.

8. Disconnect the power cables from the power supplies.

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