Dell PowerVault MD3220i Owner's Manual - Page 33
Component, Function, Controller power LED - and iscsi switch
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Item Component Function 8 SAS OUT port link/fault LED Lights green when all four links are connected. Lights amber when one to three links are disconnected. Off when all links in the port are disconnected or cable is disconnected. 9 iSCSI IN port link Lights green when ethernet connection at 1Gbps LED established. Off when there is no link. 10 Controller power LED Lights green when controller is turned on. Off when controller is not turned on. 11 iSCSI IN port activity Lights green when there is no activity on 1Gbps LED connection. Blinks green when there is Activity on 1Gbps connection. Off when 1Gbps link is down. 12 Controller fault LED Lights amber when controller fault detected. Off when controller operating normally. 13 System identification Blinks blue when system identification switch push- LED button on enclosure front panel is pressed. 14 Cache active or cache Lights green when On-board controller memory offload LED 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. 15 Battery fault Lights amber when battery backup unit or battery has failed. Off when battery backup unit is operating normally. 16 Password reset switch Activating this switch deletes the password. 17 MAC address label Provides MAC addresses of iSCSI host ports and the management port. Planning: RAID Controller Modules 33