Hitachi AMS 2100, Hardware Manual

Page: 180 / 306

6–4
Power On/Off procedures
Hitachi AMS 2100/2300 Storage System Hardware Guide
Figure 6-2: Base Unit Switch Panel
1 Do not change the setting because the normal operation of the subsystem may change .
To apply power to the base unit:
1. Press the right side of the Main Switch. As shown
Figure 6-2 , the power
ON side of the switch is labeled . This applies power to the control
units and to the disk drives.
2. Verify that the READY LED (green) on the base unit lights steadily after
four minutes. See Power On Self Test below for more information.
Power on self test
When the Main Switch (shown above) is set to ON, each component in the
array automatically runs a power on self test (POST). During this time, the
array Power LED is on and the Ready light is blinking. The POST takes
approximately four minutes under normal circumstances. When the POST is
complete and the unit is ready for operation, the Ready light changes from
blinking to steady ON.
Table 6-1: Base Unit Switch Panel
Item Description Item Description

Main Switch
Applies power to and removes
power from the controllers and
disk drives in the base unit and
the ENC unit and drives in any
attached expansion units.
The symbol at the left side of
the switch means Standby. (The
power supplies remain on)
The symbol at the right side of
the switch means ON.

Mode Switch
Sets the Uninterruptable Power
Supply (UPS) mode to either Local
Mode or one of three remote
modes.
1
NOTE: Uninterruptable Power
Supplies are not supported by the
AMS 2100/2300. Leave this switch
in the Local Mode (0) position.