Hitachi G1500 - System Idle Mode

System idle mode
When the storage system power cables are plugged into the PDUs and the PDU breakers
are on, the storage system is in idle (basic supply only) mode. When the storage system
is in idle mode:
■
The amber Basic Supply (BS) LED on the control panel is on. AC power is applied to
the power supplies.
■
The green READY LED is o. The controller and drive chassis are not operational.
■
The fans in both the contr
oller and drive chassis ar
e running.
■
The cache backup batteries ar
e being char
ged.
■
The storage system consumes signicantly less power than it does in operating mode.
For example, a storage system that draws 100 amps while operating draws only 40 to
60 amps in idle mode, depending on the number of drives in the system. The more
drives, the more power is saved. See
Table 27 Maximum idle power per chassis (on
page 121) and Table 32 Dimension specications (on page 139) .
T
o put the stor
age system into idle mode fr
om the OFF condition:
1. Ensur
e power is available to the AC input boxes and PDUs in all racks.
2. Turn on all PDU power switches and circuit breakers.
To put the storage system into idle mode from a power on condition, perform the steps
in
Power o procedures (on page 122) .
T
o shut do
wn the stor
age system, perform the po
wer o procedures, and then turn o
all PDU circuit breakers.
Warning: V
erify the stor
age system is turned o
normally and in idle mode
befor
e turning o the PDU circuit breakers. Otherwise, turning o the PDU
circuit breakers can leave the storage system in an abnormal condition.
Table 27 Maximum idle power per chassis
Chassis Maximum idle power (VA)
Controller Chassis 0 or 1 500
SFF Drive Chassis 1,120
LFF Drive Chassis 720
FMD Drive Chassis 1,280
Normal power on/off procedures
This section provides general information about turning on and turning o the power to
the stor
age system. If further assistance is r
equir
ed,
contact customer support.
System idle mode
Chapter 6: Turning power on and o to the storage systems
Hitachi Virtual Storage Platform G1000, G1500, and VSP F1500 Hardware Guide 121