IBM System Storage Subsystem DS5020 - Manual (Page 133)

Table 13. Front LEDs and controls
LED Normal Status Problem Status
Drive Activity LED On (not blinking) - No data is
being processed
Blinking - Data is being
processed
Off
Drive Fault LED Off
Blinking - Drive, volume, or
storage array locate function
On (not blinking)
Global Locate On only when you activate
the locate function in the DS
Storage Manger Subsystem
Management window menu.
The normal state is off. N/A
Global Summary Fault Off On
Global Power On Off
Link Rate Switch Set to the 4 Gbps position. N/A
Battery unit LEDs
This section describes the primary LEDs on the storage subsystem battery units.
Drive
activity
LED Drive
fault
LED Global
locate
LED Global
summary
fault
LED Global
power
LED Link
rate
switch
Figure 67. Front LEDs and controls
Chapter 4. Operating the storage subsystem 103