Quantum SNC 4500, User Manual

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44 Troubleshooting
Each SCSI bus has its own LED to show activity on that bus. The LED blinks when I/O is occurring and is
solid when there is heavy activity.
The Fault LED lights yellow when the SNC is turned on, then immediately goes dark. Software activates
the LED if there is a system error.
Check for Problems on Attached Devices
Check the following in order to find problems on attached devices:
• LEDs
• Display panels
• Firmware levels
• Operability
Check Host Versions
Check the following to find problems on attached hosts:
• Operating system version
• Service pack version
• Host adapter version
• Host adapter firmware version
• Host adapter device driver version
• iSCSI driver version
If an update is required, perform the update. For an updated list of support SNC host platforms and host
adapters, visit
www.adic.com .
Check SNC Product Versions
For a current list of required updates, visit www.adic.com .
Table 3 LEDs on the SNC 4501
LED Appearance Meaning
Ethernet activity LEDs green, blinking I/O activity
Ethernet activity LED off no link
Ethernet speed LEDs amber on speed is 1 Gb/sec
Ethernet speed LED off speed is 1/100 Mb/sec
SCSI bus activity LED blinking I/O activity
Fault LED on, amber unit is starting up
Fault LED blinking fatal fault imminent