Data Domain: Using iDRAC and Serial Over Lan (SOL) on DD3300, DD6900, DD6400, DD9400, DD9900

This assumes the customer already has iDRAC configured and remotely accessible on the DD. It could also be used with a CE plugged in through micro usb cable or ethernet to iDRAC.
Newer DDs, (DD3300, DD6900, DD9400, DD9900) are integrated with the iDRAC module which allows remote troubleshooting using Serial Over Lan (SOL). It is akin to having a serial connection to the DD but remotely through iDRAC's terminal (racadm).
It may not be enabled by default and requires some changes in iDRAC and BIOS settings to work.

For all systems:

1. In the iDRAC Web interface, make sure the iDRAC user you are logged into has proper admin and SOL privileges. 
   iDRAC Settings > Users > Local Users:
   1.   
2. Make sure SOL is enabled by matching these settings, go to iDRAC Settings > Connectivity > Serial Over LAN.
   1.     

For DD3300s:
Use this KB to setup SOL on DD3300s, it has different settings from the other DDs:
Data Domain: How to access DDOS console through iDRAC on a DD3300 system

For DD6900, DD6400, DD9400, DD9900:
After verifying the settings for all systems above, you need to edit the BIOS settings using iDRAC.

1. Login to the iDRAC web GUI and go to Configuration >  BIOS Setting > Serial Communication 
   The settings will need to match these:
    
2. Click Apply after changing the Serial Communication settings and then scroll to the bottom of the page and click At Next Reboot or Apply and Reboot. The DD will need to be rebooted so iDRAC can apply the new BIOS settings. 
   
3. Reboot the DD and during boot up, you can watch the BIOS configuration job through the iDRAC virtual console. It will reboot again after applying the new BIOS settings.
4. Now SOL should be properly configured and usable by using putty/ssh to connect to the iDRAC terminal (racadm).
5. Connect to iDRAC racadm using ssh/putty with the same ip/hostname/usb connection you would use to login to the iDRAC web GUI and use the iDRAC credentials to login.
6. Then type # console com2 to open the SOL connection to the DD: 
    
7. You should now see the same output that you would normally see only on the physical serial port. If you see no output, try hitting enter.
8. SOL allows for entering single user mode remotely and other tasks that could only be accomplished with a physical serial connection before.

NOTE: Enabling SOL may disable the physical serial port on the DD. Revert settings back to default to enable the serial port:

For DD9410, DD9910:

1. In a web browser, type the iDRAC IP address specified during iDRAC configuration.
2. Login with the user name root. The default password is the system serial number on the PSNT.
3. Select Configuration > BIOS Settings > Serial Communications.
4. Verify the following values are configured, and specify any that are not set as listed:

● Serial Communication: On with Console Redirection
● Serial Port Address: COM1
● External Serial Connector: Serial Device 1
● Failsafe Baud Rate: 115200
● Remote Terminal Type: VT100/VT220
● Redirection After Boot: Enabled

5. Click Apply to save any changes.
6. Click Apply and Reboot.
7. Select Maintenance > Job Queue and verify the Configure: BIOS.Setup job is complete.
NOTE: Click Refresh to get the latest status