Controller Leds - IBM System Storage DS3300 Installation, User's, And Maintenance Manual

Controller LEDs

This section describes the controller LEDs on the rear of the storage subsystem.
Figure 33. Controller LEDs
Battery fault (amber)
Cache active (green)
Service action allowed (OK to remove) (blue)
Service action required (fault) (amber)
Power (green)
Ethernet speed
Ethernet activity
SAS link service action (amber)
SAS link up (green)
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System Storage DS3300 Storage Subsystem: Installation, User's, and Maintenance Guide
Cache active (green)
Battery fault (amber)
When this LED is lit, it indicates that the battery fails to hold a charge and
should be replaced. The normal condition of this LED is off.
When this LED is lit, it indicates that data is in the memory cache. When
this LED is off, caching is turned off; no data is in the memory cache.
When this LED is lit, it indicates that it is safe to remove the controller from
the DS3300; no activity is taking place, and no data remains in the memory
cache. The normal condition of this LED is off.
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.
When this LED is lit, it indicates that the controller is receiving power. When
this LED is off, the controller is not receiving power.
When this LED is lit, it indicates that the Ethernet speed between the
controller and the management workstation is 100 Mbps. When this LED is
off, it indicates that the Ethernet speed is 10 Mbps.
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.
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.
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.
Service action allowed (blue)
Service action required (amber)
Power (green)
Ethernet speed
Ethernet activity
SAS link service
action (amber)
SAS link up