What do the LEDs mean on a CacheFlow appliance?
There are a number of LEDs on the CacheFlow appliance that communicate system information to the user. This article describes the name and purpose of each LED and how you can use this information to diagnose problems.
There are two factors that are used to determine the LED state: the mode and the color. Both of these factors are necessary for unique identification. The three modes that describe LED activity are:
The possible LED colors are:
There are two LEDs on the front panel and one LED for each disk. The Power LED is to the left of the LCD and the System LED to the right.
Off: Powered off.
The System LED is not in use for CacheFlow appliances.
Hard Disk LED
Off: No disk.
The hard disk LED will flash green for a split second when the appliance is powered on. This flash is hardware generated and indicates the disk has power. If you are having trouble with your disk, and the disk LED does not show anything, check to make sure the disk is fully plugged in and that the SAS cable is not loose. If the problem persists, you should contact Blue Coat Technical Support.
Each network interface has two LEDs. One describes the speed and one describes the activity.
Off: 10 Mbps
Off: No link
The LCD displays relevant CacheFlow software information to the user. It is also possible to flash the LCD backlight, which can help identify the appliance within a rack. The backlight can be turned on and off and flashing can be toggled from the CLI:
CF5k#(config front-panel)backlight ?
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