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Although the PSUs are redundant and a single PSU can provide sufficient power
to the system, it is advisable to turn both the power switches on. If only one PSU is
operating and fails, the whole system will crash.
4.3.4 Power On Status Check
Once the ES subsystem has been powered on, the status of the entire subsystem
should be checked to ensure that everything is running smoothly and that there are no
complications or malfunctions.
1. Controller module LEDs: The controller module LEDs should all flash green.
2. Drive tray LEDs: The LEDs of all the drive trays (that contain hard drives)
should be constantly lit green to indicate that the drives have successfully spun
up and are ready for I/Os.
3. LCD panel LEDs: The blue LED on the LCD panel should come on indicating
that power is being supplied to the system.
4. Firmware and RAIDWatch: The overall status of the system may be checked
using the terminal interface or the RAIDWatch GUI.
5. Audible alarm: If any errors occur during the initialization process, the onboard
alarm will sound in a hastily repeated manner.
Drive tray LEDs should normally start flashing during the initialization stage,
indicating the RAID controller unit is attempting to access the hard drives.
The subsystem has been designed to run continuously. If a hot-replaceable
component fails, the fault can be corrected online.
Power On
Figure 4- 10: Subsystem Power Switches
CAUTION!
NOTE:
Chapter 4: Connection and Operation
4-9
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