User guide

5–4 Power On/Off procedures
Hitachi Unified Storage VM Block Module Hardware User Guide
• The storage system consumes significantly less power than it does in
operating mode. For example, a storage system that draws 100 amps
while operating draws only about 70 amps in standby mode. See Table
A-4: HUS VM electrical specifications, single phase current on page A-5
and Table A-6: Power consumption, single phase current on page A-6 for
power consumption specifications.
To put the storage system into standby mode from the OFF condition:
1. Ensure that power is available to the AC input boxes and PDUs in all
racks in which the HUS VM storage system is installed.
2. Turn all PDU power switches/breakers ON.
To put the storage system into standby mode from a power on condition,
complete the steps in Power off procedures on page 5-5.
To completely power down the storage system, complete the power off
procedures in this chapter, then turn off all PDU circuit breakers.
Normal Power on/off procedures
This section provides general information about power on/off procedures for
the HUS VM storage system. If needed, call technical support for assistance.
Power on procedures
Prerequisites:
• Ensure that the storage system is in standby mode. See Standby mode
on page 5-3.
Follow this procedure exactly when powering the storage system on. Refer
to the illustration of the control panel as needed.
1. If the front bezel is installed, press the Power ON/Off button. If the front
bezel is not installed, press the right side of the rocker switch move the
POWER ON/OFF switch to the ON position.
2. Wait for the storage system to complete its power-on self-test and boot-
up processes. Depending on the storage system configuration, this may
take several minutes.
3. When the READY LED is ON, the storage system boot up operations are
complete and the storage system is ready for use.
WARNING: Make certain that the storage system is powered off normally
and in standby mode before turning off the PDU circuit breakers. Otherwise,
turning off the PDU circuit breakers can leave the storage system in an
abnormal condition.
Note: If the ALARM LED is also on, or if the READY LED is not ON after
20 minutes, contact Technical Support for assistance.