4 Fault LED (amber)
When this amber LED is lit, it indicates that a power supply or fan has failed or that a redundant
power supply is not turned on.
5 AC power LED (green)
When this green LED is lit, it indicates that the storage subsystem is receiving ac power.
Drive drawer LEDs
This section describes the LEDs on storage expansion enclosure drive drawers.
Table 15. Drive drawer LEDs
Number LED Normal Status Problem Status
1 Service Action Allowed
OK
Off On (Blue): The drive drawer can
be removed
The drawer Service Action
Allowed LED is also lit when a
Service Action Allowed LED on
one of the drives in the drawer is
lit.
2 Service Action Required (Fault)
Off On (Amber): A fault exists within
the drive drawer
3 - 14 Drive Activity (for drives 1 to 12
in the drawer)
Note: The associated disk drive
is indicated by a number (1 to 12)
that is displayed inside the Drive
Activity icon.
On (Green): Power is on, drive is
operating normally
Blinking (Green): Indicates drive
I/O activity
Off: No power to the drive or a
drive is not installed
Disk drive LEDs
This section describes the service LEDs on the disk drives. The drive power/drive activity LEDs are
located on the front of the drive drawer. See “Drive drawer LEDs” for more information.
dcsi0008
12
13
14
1
3
4
2
5
6
7
8
10
9
11
Drive drawer levers
Figure 56. Drive drawer LEDs
78 IBM System Storage DCS3700: Installation, User, and Maintenance Guide
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