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DSDA iSCSI Disk Array Series Monitoring and Maintenance | en 27
Bosch Security Systems Installation Guide V 1 | 2008.08
7.3.2 DSA-N2B20 / DSA-N2B50
LEDs on front side, right:
If the Power LED is not lit green, the system has no power.
X Check the cables and switch the system on.
If the Fault LED is lit amber, the system is halted, or an error is indicated.
A blinking Controller LED indicates activity of the controller.
A corresponding Power LED and a Fault LED are also located on the rear side of the system.
On the rear side, next to the Ethernet ports, two fault-indicating LEDs can be found.
– NVRAM Battery LED blinking green:
NVRAM is in battery-backed standby-state (contains data not written to disk yet).
– Controller Module Status LED lit amber:
System is initializing or system fault.
7.3.3 Disk Shelves
There is a corresponding LED next to each SFP slot on the rear side of the shelf:
–LED lit green:
SFP connection.
– LED not lit:
No SFP connection. Check all cable connections and ensure all plugs are properly fitted.