Dell PowerVault 725N (Rackmount NAS Appliance) - Manual (Page 27)

Checking the Equipment
This section provides troubleshooting procedures for components that connect directly to the I/O panel of the system. Before performing any of these
procedures, see "
External Connections ."
Troubleshooting an Integrated NIC
Problem
l NIC cannot communicate with network.
l NIC cable is faulty.
l NIC, hub, and switch configuration settings do not respond.
Action
1. Connect a keyboard, mouse, and monitor to the NAS system.
2. Check the appropriate indicator on the NIC connector. See Figure 2 -3 .
3. If the link indicator does not light, perform the following steps:
a. Check all cable connections.
b. Try changing the auto-negotiation setting, if possible.
c. Try another connector on the switch or hub.
4. If the activity indicator does not light, the network driver files might be damaged or deleted. Check the drivers, and remove and reinstall the drivers if
applicable.
5. Ensure that the appropriate drivers are installed and the protocols are bound.
6. Ensure that the NICs, hubs, and switches on the network are all set to the same data transmission speed.
See the network equipment documentation for more information.
7. Ensure that all network cables are of the proper type and do not exceed the maximum length.
8. Run NIC diagnostics tests. See " Running the NIC Diagnostics Program ."
Troubleshooting the Serial Connector
Problem
l You cannot access the NAS system through console redirection.
Action
1. Turn off the NAS system and any device connected to the serial connector.
2. Ensure you are using a null modem serial cable.
3. Swap the cable with a working cable.
4. Turn on the client system.
5. Turn on the NAS system.
6. Use the System Setup program to ensure that console redirection is enabled. See your User's Guide for more information about using the System Setup
program.
If the problem is resolved, the interface cable must be replaced. See " Getting Help ."
Troubleshooting Hard Drives
Problem
l The hard drive fails.
Action
1. Turn off the system.
NOTE: For more information about using console redirection, see " Using Console Redirection ."
NOTE: When you turn on the system, press the power button for less than two seconds. If you press the power button for longer than 3 seconds,
the NAS system shuts down and automatically rebuilds its RAID arrays, which could impact system performance for several hours.
NOTICE: This troubleshooting procedure can destroy data stored on the hard drive. Before you proceed, back up all the hard drive files.