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Table 4. MD3400 and MD3420 Series SAS RAID Controller Module
Item
Component
1
16 Gbps FC IN port (4)
2
Seven segment display
sequence
3
Controller power LED
4
Controller fault LED
5
System identification LED
6
Cache active or cache offload
LED
7
Battery fault
8
Management port
9
Ethernet port (reserved)
10
SAS IN port (2)
11
USB port
12
Mini USB port
13
Password reset switch
Function
Provides host-to-controller FC connection.
Displays status or error codes for the storage array.
Lights green when controller power is on.
Turns off when controller is not powered.
Lights amber when controller fault is detected.
Turns off when controller is operating normally
Blinks blue when system identification switch push-
button on enclosure front panel is pressed.
Lights green when on-board controller memory
contains data.
If AC power fails, this LED changes to indicate Cache
Offload status. If the password reset function has
successfully changed the password, this LED flashes
on and off briefly.
NOTE: The password reset switch is not
available if your system was shipped after
September, 2015. The password reset switch
functionality was disabled starting from
controller firmware 08.20.09.60 and later
versions.
Lights amber when battery backup unit or battery has
failed.
Turns off when battery backup unit is operating
normally
Provides a 100/1000 Mbps Ethernet connection for
out-of-band management of the enclosure.
Reserved port.
Provides host-to-controller SAS connection.
Does not provide any functionality.
Reserved port.
Activating this switch resets the password.
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