There is something wrong with your backend config

You can try troubleshooting yourself using nas_storage, server_checkup and server_devconfig or open an SR to get support to take a look

With the LUNs down to 1 path it could also be a SP or port/cable failure

A screenshot isn’t enough to troubleshoot this

Most likely the storage rescan or even addition of the LUns hasn’t caused this – it merely triggered a storage check

Hi ,

check in Unisphere the host initiator logins for the storagegroup ~filestorage .

There must be two entries for every datamover .

Check also the correct FC cabeling .

regards Lutz

initially we configured 10 luns. after that customer removed this luns but not properly.so now recreate luns and add to nas but not added.after rescan storage system this error popup.

what is the proper way solve this error?what is the reason?

The proper way is to troubleshoot what exactly is wrong by looking at the data mover logs and the CLI commands

If you don’t have the experience doing that I would suggest to open a service request with EMC or your EMC partner support

Problem fixed.spa to dm fiber cable wrong.

Thanks for advice Rainer