User guide

Power On/Off procedures 5–3
Hitachi Unified Storage VM Block Module Hardware User Guide
Standby mode
When the storage system power cables are plugged into the PDUs and the
PDU breakers are ON, the storage system is in standby mode. When the
storage system is in standby mode:
• The POWER LED is amber. This indicates that AC power is applied to the
power supplies but DC power is not supplied to the rest of the system,
except as noted below.
• The READY LED is OFF. This indicates that the controller and drive boxes
are not operational.
• The fans in both the controller chassis and drive boxes are running.
• The cache destage batteries are being charged.
1 POWER LED- indicates
the power status of the
system
• Off when no AC power
is applied to the
system.
• Amber when AC
power is applied to
the system and the
system is in standby
mode
• Green when the
power switch is ON
and the system is
running (DC power
applied to the
system).
2 READY LED - indicates
the operational status of
the system
• Off when no AC
power is applied to
the system.
• Amber when AC
power is applied to
the system and the
system is booting up.
• Green when the
storage system is in
operating mode
3 MESSAGE LED
• Off when power is
off or when no
system generated
message is in the
queue.
• Amber
* ON when a system
information message
(SIM) is generated
by either of the
clusters and has
been sent to Storage
Navigator and to the
users that are set up
in Storage Navigator
to receive them
* Blinking when a
SVP failure has
occurred.
4 ALARM LED
• Off when the system
is off or when the
system is on and
operational with no
failures .
• Red when the SVP
detects a component
failure or other failure
condition in the
system
5 POWER OFF button.
Press this button to put
the system into standby
mode. Note that this
does not turn off AC
power to the power
supplies.
6 POWER ON button.
Press this button to
activate the power
supplies, apply DC power
to the system
components, and start
the system POST and
boot routines. This takes
the system out of
Standby mode
Items 7 - 9 are on the front panel of the control chassis (front bezel removed).
7 POWER swit
ch. Press
the left side to turn power
OFF and put system in
Standby mode. See
instructions before
turning power off.
8 Metal safety guard
covering most of the OFF
side of the POWER
switch. This helps to
prevent accidental power
off.
9 POWER switch. Press
the right side to turn
power ON.
Item Description Item Description Item Description