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Table 8. LEDs: ME4 Series SAS controller module
LED Description
Definition
1
Host 12 Gb SAS
1-2
Link Status/
Link Activity
Green — The port is connected and the link is up.
Amber — Partial link exists (one or more lanes down).
Blinking green or amber — Host link activity is detected.
2
OK
Green — The controller is operating normally.
Blinking green — System is booting.
Off — The controller module is not OK, or is powered off.
3
Fault
Off — The controller is operating normally.
Amber — A fault has been detected or a service action is required.
Blinking amber — Hardware-controlled power-up or a cache flush or restore error.
4
OK to remove
Off — The controller is not prepared for removal.
Blue — The controller module is prepared for removal.
5
Identify
White — The controller module is being identified.
6
Cache status
3
Green — Cache is dirty (contains unwritten data) and operation is normal.
The unwritten information can be log or debug data that remains in the cache, so a green cache
status LED does not, by itself, indicate that any user data is at risk or that any action is necessary.
Off — In a working controller, cache is clean (contains no unwritten data).
This is an occasional condition that occurs while the system is booting.
Blinking green — A CompactFlash flush or cache self-refresh is in progress, indicating cache
activity.
Table 9. Cache Status LED – power on behavior
7
Network Port Activity Status
4
Off — The Ethernet link is not established, or the link is down.
Green — The Ethernet link is up (applies to all negotiated link speeds).
8
Network Port Link Speed
4
Off — Link is up at 10/100base-T negotiated speeds.
Amber — Link is up and negotiated at 1000base-T.
9
Expansion Port Status
Green — The port is connected and the link is up.
1
-Cables must be qualified HD mini-SAS cable options.
2
-Use a qualified SFF-8644 to SFF-8644 cable option when connecting the controller to a 12Gb SAS HBA.
3
-Cache Status LED supports power on behavior and operational (cache status) behavior. See also
Table 9. Cache Status LED – power on
.
4
–When port is down, both LEDs are off. See also
5
-Once a Link Status LED is lit, it remains so, even if the controller is shut down using the ME Storage Manager or the CLI.
Storage system hardware
29