Ds400 Storage Subsystem Rear View; Power Supply Controls And Leds - IBM TotalStorage DS300 Hardware Installation And User's Manual

For information about installing and replacing hard disk drives, see "Installing a
hot-swap hard disk drive" on page 60 and "Replacing a hot-swap hard disk drive"
on page 61.

DS400 storage subsystem rear view

The following sections show the LEDs, controls, and connectors on the components
at the rear of the DS400 storage subsystem.

Power supply controls and LEDs

The following illustration shows the LEDs, controls, and connectors on the power
supply.
Figure 40. DS400 power supply LEDs, controls, and connectors
Power cord connector
AC power on/off switch
Power OK LED (green)
Fault LED (amber)
46
Hardware Installation and User's Guide
Table 5. Front view LEDs (continued)
Symbol Description
No label Hard disk drive
activity
No label Hard disk drive
status
AC power
connector
Connect the power cord to this connector.
Use this switch to turn the power supply on and off.
When this LED is lit, it indicates that the power supply is turned on.
When this LED is lit, there is a fault with either the power supply or a fan.
Color Indication
Green When this LED is flashing, it indicates
that the drive is in use. Each hard disk
drive has an activity LED.
Amber When this LED is lit, it indicates that the
drive has failed. When this LED is
flashing slowly (one flash per second), it
indicates that the drive is being rebuilt.
When the LED is flashing rapidly (three
flashes per second), it indicates that the
RAID controller is identifying the drive.
Each hard disk drive has a status LED.
Power OK LED
Fault LED
AC power
switch