Ethernet speed LED
When this LED is lit, it indicates that the Ethernet speed between the
controller and the management workstation is 1000 Mbps. When this LED
is off, it indicates that the Ethernet speed is 100 Mbps.
Ethernet activity LED
When this LED is lit, it indicates that the link is established between the
controller and the management workstation. When this LED is flashing,
there is activity between the controller and the management workstation.
When this LED is off, no link is established between the controller and the
management workstation.
SAS link service action LED (amber)
When this LED is lit, it indicates a problem with the SAS link that requires
service action. The normal condition of this LED is off.
SAS link up LED (green)
When this LED is lit, it indicates that the link is established between the
controller and a host. When this LED is flashing, it indicates activity on the
link. When this LED is off, no link is established.
Cache active LED (green)
When this LED is lit, it indicates that battery backup has been enabled and
data is in the memory cache. When this LED is flashing, cache offload is in
process. When this LED is off, caching is turned off and no data is in the
memory cache.
Fault LED (amber)
When this LED is lit, it indicates that a fault has occurred in the controller
and the controller must be replaced. The normal condition of this LED is
off.
OK to remove LED (blue)
When this LED is lit, it indicates that it is safe to remove the controller
from the DS3500; no activity is taking place, and no data remains in the
memory cache. The normal condition of this LED is off.
Battery charging LED (green)
When this LED is lit, the battery is fully charged. When this LED is
flashing, the battery is charging. When this LED is off, the battery either
failed or has been removed from the controller.
Figure 81. Controller LEDs
Chapter 4. Operating the storage subsystem and storage enclosure 91
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