Rear View; Power-Supply-With-Fan Unit - 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 44 and "Replacing a hot-swap hard disk drive"
on page 45. For more information about the LEDs, see "Front view" on page 29.

Rear view

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

Power-supply-with-fan unit

The following illustration shows the LEDs, controls, and connectors on the
power-supply-with-fan unit.
Figure 27. DS300 and DS400 power-supply-with-fan unit LEDs, controls, and connectors
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IBM TotalStorage DS300 and DS400: Hardware Installation and User's Guide
Table 2. Rear view LEDs (continued)
Symbol Description
Storage
subsystem fault
No label Hard disk drive
activity
No label Hard disk drive
status
AC power
connector
Color Indication
Amber When this LED is lit, it indicates that the
storage subsystem has a fault, such as in
a power-supply-with-fan unit or hard disk
drive. When this LED is flashing, it
indicates that an illegal hardware
configuration is detected.
Note: If the fault LED is lit continuously
(not flashing), there is a problem with the
storage subsystem. Use the ServeRAID
Manager program to diagnose and repair
the problem. For more information, see
the Problem Determination Guide.
Green Each hard disk drive has an activity LED.
When this LED is flashing, it indicates
that the drive is in use.
Amber Each hard disk drive has a status LED.
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.
Power OK LED
Fault LED
AC power
switch