Adding/Removing modules from a datamover

I recently had an issue where a brand new datamover installed by EMC would not allow me to make it a standby for the existing datamovers.  It turns out that the hardware (specifically the number of FC and ethernet interfaces) must match PRECISELY, the number of ports and the slots the modules are installed in have to match across all datamovers.

The new datamover that was installed had an extra 4 port ethernet module installed in it.  Below is the procedure I used to remove the module, including all the commands to take it down, reconfigure it, and bring it back up successfully.  Removing the extra module solved the problem, it matched the config of the others and allowed me to configure it as a standby.

First, log in to the CLI on the control station with root priviliges.  Next, just run the commands below in order.

Turn off connecthome and emails to avoid false alarms.
 /nas/sbin/nas_connecthome -service stop
 /nas/bin/nas_emailuser -modify -enabled no
 /nas/bin/nas_emailuser -info

Copy and paste this to save, it will list the current datamover config.
 nas_server -i -a

Run this to shut the datamover down.  Run getreason to verify when it’s down.
 server_cpu server_<x> -halt now

Remove/replace the module now.

Power the datamover back on.
 /nasmcd/sbin/t2reset pwron -s <slot number>

Watch getreason for status
(Wait for it to reboot and say ‘Hardware Misconfigured’)

Once it is in a ‘misconfigured’ state, run setup_slot to configure it:
 /nasmcd/sbin/setup_slot -i 4

Run this command to view the current hardware config, verify that your change was made:
 server_sysconfig server_4 -p

Restart connecthome and email services.
 /nas/sbin/nas_connecthome -service start -clear
 /nas/sbin/nas_connecthome -i
 /nas/bin/nas_emailuser -modify -enabled yes
 /nas/bin/nas_emailuser -info

That’s it!  your datamover has been updated and reconfigured.


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