Quantum QXS G2 Series, Hardware Installation And Maintenance Manual

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System Overview 47
If the controller has failed or does not start, is the Cache Status LED on/blinking?
12Gb/s Expansion IOM
If optional expansion chassis have been cabled to add storage, the supported chassis are configured
with dual expansion IOMs.
Figure 49 provides an illustration of the expansion IOM and LEDs for the 2U12, 2U24, and 5U84
chassis.
Figure 49
Expansion IOM LEDs
Table 5 Controller Failure/Single-Controller Operational
Answer Action
No, the Cache LED status is off, and the controller does
not boot.
If the problem persists, replace the controller module.
No, the Cache Status LED is off, and the controller
boots.
The system has flushed data to disks. If the problem
persists, replace the controller module.
Yes, at a strobe 1:10 rate - 1 Hz, and the controller does
not boot.
You may need to replace the controller module.
Yes, at a strobe 1:10 rate - 1 Hz, and the controller
boots.
The system is flushing data to CompactFlash. If the
problem persists, replace the controller module.
Yes, at a blink 1:1 rate - 2 Hz, and the controller does
not boot.
You may need to replace the controller module.
Yes, at a blink 1:1 rate - 1 Hz, and the controller boots. The system is in self-refresh mode. If the problem
persists, replace the controller module.
4
6
2
1
5
3
LED
Description Definition
1
Identity Blue — The IOM is being identified.
2 Fault Off — The IOM is operating normally.
Amber — A fault has been detected or a service action is
required.
3 OK Green — The expansion module is operating normally.
Blinking green — System is booting.
Off — The expansion module is powered off.
4 HD mini-SAS connector LEDs
(A/B/C)
See Table 6 for Activity (Green) and Fault (Amber) LED states.