System Overview : Dell PowerVault 220S and 221S Systems Service Manual
file:///C|/Users/rishi_sood/Desktop/220s/en/sm/intro.htm[3/7/2013 12:09:13 PM]
Table 1. Front Panel Indicators
LED Indicator LED Icon Condition
Power (green)
At least one power supply is supplying power to the system.
Shelf-fault
(amber)
One of the following conditions has occurred: power-supply failure, EMM failure, cooling-module failure, over-temperature condition, split-bus module not
installed, or firmware currently being downloaded. For more information, see "
Basic Troubleshooting
."
Cluster (green)
The system is configured for cluster mode. For more information, see "
Split-Bus Module
."
Split-bus
(green)
The system is configured for split-bus mode. For more information, see "
Split-Bus Module
."
Over-
temperature
(amber)
An over-temperature condition has occurred (the system will shut down when the temperature inside the box exceeds 50°C [122°F]). For more
information, see "
Basic Troubleshooting
." For the locations of the temperature probes, see "
Temperature Probes
."
Hard-Drive Carrier LED Indicators
Each of your storage system's 14 hard-drive carriers has two LED indicators: a busy indicator and a status indicator (see
Figure 2
for location).
Table 2
shows the hard-drive LED
indicators with the associated LED icons.
Table 3
lists the flash patterns for the hard-drive status indicator.
Table 2. Hard-Drive Carrier LED Indicators
LED Indicator
LED Icon
Condition
Busy (green)
The hard drive is active on the SCSI bus.
NOTE:
This LED is controlled by the hard drive.
Status (green and amber)
See
Table 3
for flash patterns and conditions.
Table 3. Hard-Drive Carrier Status Indicator Flash Patterns
Condition
Status Indicator Pattern
Slot empty, ready for insert/remove
Off
Drive online, prepare for operation
Steady green
Drive identify
Flashes green four times per second
Prepare for removal
Flashes green twice per second at equal intervals
Drive rebuild
Flashes green twice per second at unequal intervals
Drive fail
Flashes amber four times per second
Predicted failure
Flashes green, then amber, then off, repeating this sequence every two seconds
Back-Panel Features and Indicators
Figure 3
illustrates the back-panel features for systems with redundant EMMs and redundant power supplies.
Figure 4
illustrates the back-panel features for nonredundant systems. See
Figure 5
,
Figure 6
, and
Figure 8
for more detail on the back-panel indicators.
Figure 3. Back-Panel Features (Systems With Redundant EMMs and Redundant Power Supplies)
1
unused port
2
cooling module (blowers 2 and 3)
3
power supply (PSU1)
4
power supply (PSU2)
5
cooling module (blowers 0 and 1)
6
unused port
