
Table 7 O perational I/O module status indicators
Upper Power Lower
Descriptions
Off
On
Off
• I/O Module is op
erational
On
Flashing, then On
On
• Top port—Fibre Channel drive enclosure signal detected.
• Power—Flashes for about 90 seconds af ter initial power application,
then remains constant.
• Bot tom port—Fibre Channel drive enclosure signal detected.
On On On
• Top port—Fibre Channel drive enclosure signal detected.
• Power—Present.
• Bot tom port—Fibre Channel drive enclosure signal detected.
Flashing Flashing Flashing
• When the l
ocate function is active, all three indicators flash
simultan
eously. The Locate function overrides all other indicator
function
s. Therefore, an error could be detected while the Locate
functio
nisactiveandnotbeindicateduntiltheLocateaction
termina
tes.
Table 8 N
on -opera tional I/O m odule status indicators
Upper Power Lower
Descriptions
On On
Off
• Top port—Fibre Channel drive enclosure signal detected.
• Power—Present.
• Bottom por t—No Fibre Channel drive enclosure signal detected.
Check transceiver and fiber cable connections.
NOTE:
This status applies to configurations with and without FC loop
switches.
Off
On On
• Top port—No Fibre Channel drive enclosure signal detected. Check
transceiver and fiber cable connections.
• Power—Present.
• Bottom port—Fibre Channel drive enclosure signal detected .
Flashing
On On
• To
p p ort—EMU detected possible transceiver problem. Check
tr
ansceiver and fiber cable connections.
• P
ower—Present.
• B
ottom port—Fibre Channel drive enclosure signal detected .
On On
Flashing
• Top port—Fibre Channel drive enclosure signal detected.
• Power—Present.
• Bottom port—EMU detected possible transceiver problem. Check
transceiver and fiber cable connections.
NOTE:
The EMU will not flash the lower indicator on its own. It will flash
only in response to a locate comma nd. You can flash each of the
lights independently during a locate action.
Off Off Off
• No I/O module power.
• I/O module is nonoperational.
• Check power supplies. If power supplies are operational, r eplace
I/O module.
48
Enterprise Virtual Array hardware components
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