Dell EMC ME4 Series Owner's Manual page 28

LED Description
5 OK to remove
6 Identify
3
7 Cache status
8 Network Port Activity Status
9 Network Port Link Speed
10 Expansion Port Status
1
- iSCSI 10Gbase-T connectors must use qualified 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. See
behavior.
4
- When port is down, both LEDs are off. See
Figure 33. LEDs: ME4 Series SAS controller module
28 Storage system hardware
Definition
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.
Off — The controller is not prepared for removal.
Blue — The controller module is prepared for removal.
White — The controller module is being identified.
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.
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).
4
Off — Link is up at 10/100base-T negotiated speeds.
Amber — Link is up and negotiated at 1000base-T.
Off — The port is empty or the link is down.
Green — The port is connected and the link is up.
Table 9. Cache Status LED-power on
Table 9. Cache Status LED-power on
behavior.