Owners Manual

Table 6. ME4 Series controller modules (FC and iSCSI SFPs) LEDs (continued)
LED Description Definition
4 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.
5 OK to remove
● Off—The controller is not prepared for removal.
● Blue—The controller module is prepared for removal.
6 Identify White—The controller module is being identified.
7 Cache status
4
● 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.
8 Network Port Link Active Status
5
● Off—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
5
● Off—Link is up at 10/100 base-T negotiated speeds.
● Amber—Link is up and negotiated at 1000 base-T.
10 Expansion Port Status
● Off—The port is empty or the link is down.
● Green—The port is connected and the link is up.
1
When in FC mode, the SFPs must be qualified 8Gb or 16Gb fiber optic option. A 16 Gb/s SFP can run at 16 Gb/s, 8 Gb/s, 4
Gb/s, or auto-negotiate its link speed. An 8 Gb/s SFP can run at 8 Gb/s, 4 Gb/s, or auto-negotiate its link speed.
2
When in 10 GbE iSCSI mode, the SFPs must be a qualified 10 GbE iSCSI optic option.
3
When powering up and booting, iSCSI LEDs are on/blinking momentarily, then they switch to the mode of operation.
4
Cache Status LED supports power on behavior and operational (cache status) behavior. See also Cache Status LED – power
on behavior on page 28.
5
When port is down, both LEDs are off.
Figure 32. ME4 Series 10Gbase-T controller module LEDs
Table 7. ME4 Series 10Gbase-T controller module LEDs
LE
D
Description Definition
1 Host 10Gbase-T iSCSI
● Link Status
● Off—No link detected.
● Green—The port is connected and the link is up.
Storage system hardware 25