Figure 45 Controller Module Leds; Table 2 Host Port Link Led Status Types - Seagate Exos CORVAULT Hardware Installation And Maintenance Manual

LED Type
CACHE Cache
OK to remove
Controller ID
Hardware fault
Hardware normal

Figure 45 Controller module LEDs

Additional LEDs on the CM relate to host connectivity. Only one LED per port is active at any given time. Each
LED functions as an indicator for both host link status and host link activity.

Table 2 Host port link LED status types

LEDs Type
Ethernet port
SAS host port
Color State
On
Green Flashing
Off
On
White
Off
On
Blue
Off
On*
Amber Flashing
Off
On
Green
Flashing
Off
Color State Status
Connected and active
On
Connected and registering input or output activity
Green
Flashing
No host link detected
Off
SAS connected; all four active SAS lanes functioning at same
On
negotiated speed
Green
SAS connected; all four active SAS lanes register input or output
Flashing
activity
Off
No host link detected
SAS connected; one or more SAS lanes inactive; partial link up
On
results in lower and inconsistent speed
Amber
SAS connected; one or more SAS lanes inactive; active lanes
Flashing
register input or output activity
Off
No fault detected
Status
CM is functioning properly, no cache activity
Cache contains data and requires flush
Cache does not contain persistent data that requires flush
CM is safe to remove after successful shutdown
Active, not safe to remove CM
Controller unit identification (UID) active
Normal state, no query for UID active
CM hardware fault
Part of sequence as CM comes online
CM hardware is functioning properly
CM is functioning properly
Part of sequence as CM comes online
CM power is off
Chapter 5 Operation
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