Power Supply Unit (Psu) Leds; Psu Leds; Psu Led States - IBM Slicestor 2584 Installation Manual

Table 4. Drawer LED states (continued)
Sideplane
OK / power Sideplane
(green) fault (amber)
On On
On X
On X
Off X
On Off
*The Activity Bar Graph is a 6-segment drive activity meter, showing activity of the SAS interface to the sideplane.
For zero activity, no segments are lit, scaling linearly until all segments are lit when the interface is transferring data
at full capacity.
X = disregard

Power supply unit (PSU) LEDs

Each PSU has its own indicators.
The following figure shows the LEDs for the power supply.
Figure 18. PSU LEDs
Table 5. PSU LED states
PSU fail
(amber) AC fail (amber
Off Off
On On
Off Off
Off Off
Flashing Flashing
On On
Off On
On On
On X
X = disregard
20
®
Slicestor 2584 Installation Guide
Logical fault Cable fault
(amber) (amber)
X X
On X
Flashing X
X On
Off Off
Power OK (green) Status
Off
Off
On
Flashing
Off
Off
Off
On
Off
Activity bar
graph (green) Status
X Drive failure has occured causing
loss of availability or redundancy
X Drive fault (Host indicated)
X Arrays in impacted state
Off Cable fault
On* Drive activity
No AC power to either PSU
PSU present but not supplying power
Main AC present, switch on; PSU is providing power
output.
AC power present, PSU in Standby mode (meaning the
other PSU is currently providing power output)
PSU firmware download
PSU alert state, usually due to critical temperature
Main AC to this PSU is missing; this PSU is now on
standby, and the other PSU is OK
GEM software lost communication with PSU
PSU failed.