LED
Status
indicator
Description
Cache Active Green
The cache contains data not yet written to disk.
Off Either the cache is inactive or all data from the cache
has been preserved in non-volatile memory.
Locate Blue There is an active request to physically locate the
controller shelf.
Off There is no active request to locate the controller shelf.
Attention Amber The controller is faulty and requires operator attention,
and the faulty component is serviceable.
Off
The controller is operating normally.
Activity Blinking green The controller is active.
Ethernet Activity (right) Green The link between the Management port and the device
to which it is connected (such as an Ethernet switch) is
up.
Off
There is no link between the controller and the
connected Ethernet port.
Blinking green There is Ethernet activity.
Ethernet Link State (left) Green
Link is established.
Off
No link is established.
SAS expansion Port Link Green
Link is established.
Off
No link is established.
SAS expansion Port Link Fault
Amber
Port is degraded (one or more Phys in the port is down).
Off Port is optimal (all Phys in the port are up or all Phys in
the port are down since the LED is off if no cables are
attached).
Host Port Link Status (SFP host port, FC
or iSCSI)
Green The link is up (Fibre Channel).
If the LED is solid, the link is up, but there is no activity
(iSCSI).
If the LED is flashing, the link is up and there is activity
(iSCSI).
If the LED is off, the link is down.
Host Port Attention (SFP host port, FC or
iSCSI)
Amber The port requires operator attention.
Chapter 5. System monitoring 175
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