Dell EMC ME4 Series - Page 28

LED Description Denition
Blinking green — System is booting.
O — The controller module is not OK, or is powered o.
4 Fault
O — 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 ush or restore error.
5 OK to remove
O — The controller is not prepared for removal.
Blue — The controller module is prepared for removal.
6 Identify White — The controller module is being identied.
7 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.
O — 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 ush or cache self-refresh is in progress, indicating cache
activity.
8 Network Port Activity Status
4
O — The Ethernet link is not established, or the link is down.
Green — The Ethernet link is up (applies to all negotiated link speeds).
9 Network Port Link Speed
4
O — Link is up at 10/100base-T negotiated speeds.
Amber — Link is up and negotiated at 1000base-T.
10 Expansion Port Status
O — The port is empty or the link is down.
Green — The port is connected and the link is up.
1
- 10Gbase-T connectors must use qualied cabling options.
2
-When powering up and booting, iSCSI LEDs will be on/blinking momentarily, then they will switch to the mode of operation.
3
- Cache Status LED supports power on behavior and operational (cache status) behavior.
4
- When port is down, both LEDs are o. See also Table 9. Cache Status LED – power on behavior
Figure 33. LEDs: ME4 Series SAS controller module
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Storage system hardware