Have a look at knowledge base emc279637. There is a certain procedure for changing IP on a Unified system.

That is because on Unified on the IP / name service config is coordinated and you need to follow the procedure in the knowledgebase

Yes, I tried that. But from the beginning, it says to run "# /nas/sbin/clariion_mgmt -stop" but it says command not found. I'm elevated to root. So I'm stuck.

EDIT: I just noticed that it says the EMC NAS service is not started and that many commands are disabled until it starts. The CS's and SP's have been rebooted multiple times. How do I start that service?

Just to rule out the obvious, what exactly are you typing in the shell, you're not putting in the # are you ?

Syntax needs to be in the form /nas/sbin/clariion_mgmt -stop

Is the file actually there ? If you type in ls -l /nas/sbin/clar*  do you see the results like below ?

I guess he also entered the quotes (")

the hash (#) alone would just make the Shell treat the rest of the line as a comment - so no harm done :-) but no error message either

Hi ,

  looks like nas service is not started, until unless nas services running then only you can be able to execute any commands.

  You can try this path (if nas service is not running)

/nasmcd/sbin/clariion_mgmt

Yes, of course, that didn't occur to me as I replied

Palaksha, that's right. Looks like the secondary controller had taken over and was running the NAS service and won't fail back. I turned it off and rebooted CS0 before I left yesterday and I'm about to go see if it started the service on it.

Just getting back to this issue (months later; got diverted to another project). This did not work and the NAS service will not start. I know how to change the SP IP's with Clariion mgmt, but since the control station is in the old network, it fails. EMC support sent a CE here today, but took him all day to get PPP connection hooked up, and that only because I happened to have proprietary cable on hand to hook into the SP's mini-serial. Now waiting several hours for call back. Not sure what will get accomplished with PPP but...

I did notice that on the front of the data movers, they have amber alarm lights on them flashing, but no way for me to know what they indicate.

Info on the DME lights is available in the EMC VNX5300 Hardware Information Guide - I have added the snapshot here.

You can also take a look at the next couple of pages of this document (CPU fault LED info is also there).