Recovering From Power Standby - Hitachi NAS Platform 4000 Series Hardware Reference Manual

3. For a cluster configuration, or when using an external System Management Unit
(SMU), start the SMU by depressing the red button located on the right of the unit.
Wait one minute to allow the external SMU to start.
4. Power up the server or the first node in the cluster:
a. If the power cables are not connected to the PSU, plug in the power cables.
b. If, after 10 seconds, the PSU LEDs are lit but the Power Status LED on the rear
panel is not lit, press the PWR button on the MFB to restore the power to the
system boards. Report this as a problem to Hitachi Vantara customer support.
c. If the power cables are connected to the PSU, press the PWR (power) button on
the rear of the server.
5. If you are starting a cluster, wait 5-10 seconds before powering on the next node in
the cluster.

Recovering from power standby

When the server is in a power standby state, the power supplies are powered and the
PSU LEDs are lit, but the Power Status LED on the rear panel is not lit.
The server will enter a standby power state due to any the following:
The shutdown --ship --powerdown command has been issued.
■
The PWR button was pressed when the server is running.
■
The server has shut down automatically due to an over temperature condition.
■
You can restore the server to its normal power state by either of the following
methods:
Pressing the PWR button.
■
Remove the power cables from both PSUs, wait for 10 seconds, then reconnect the
■
cables to the PSUs.
Chapter 6: Rebooting, shutting down, and powering off
Hitachi NAS Platform and Hitachi Unified Storage Series 4000 Hardware Reference
Recovering from power standby
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