Chapter 7 Operation of 5U enclosures
53
12Gb/s
= SAS 4-port
12Gb/s
LED
Type
Color
State
Status
Hardware normal Green
On
CM functioning properly
Flashing
Part of sequence as CM comes online, on standby
Off
CM power is off, CM is offline, or CM has a fault condition
Hardware fault
Amber
On*
CM hardware fault
Off
CM functioning properly
Identify
Blue
On
Unit identification (UID) active
Off
Normal state, no query for UID active
OK to remove
White
On
Ready for removal, the cache is clear
Off
Do not remove the CM, cache still contains unwritten data
Cache status
Green
On
Cache contains unwritten data, CM functioning properly
Fast flash (1s on, 1s
off)
Cache is active, cache flush in progress
Slow flash (3s on, 1s
off)
Cache self-refresh in progress after cache flush
Off
Cache is clear
System is coming online
Figure 44 Controller module LEDs applicable to all variations
Additional port LEDs on the CM relate to host connectivity and network activity, depending on the controller
type.