Let's take it step-by-step.  Are you following the steps in the document, Configuring NDMP Backups on Celerra? What version of DART are you on?

Have you configured your ndmp users according to the setup guide?

Is this IP address you've posted an IP address on the datamover or on the control station?  Can you ping the datamover from your backup server?

I think your IP addresses for the datamover below are the Private IP addresses for the back-end management network.  These addresses are used by the control station for management.  You don't want to point your backup at them, because they aren't accessible by your management network.  I suspect this is why you can't get a connection on port 10000 - these IP addresses are not on your network.

Can you ping your CIFS Share IPs from the backup server?  I assume yes, as they're on the same network.  Try the inquiry command on one of the CIFS share IPs. 

Hi

Yes, I am using "Configuring NDMP Backups on Celerra". I am on DART Version 6.0.40-8. I have confgured user "ndmp" with password "passowrd" as per the user guide.This is the IP Address of my Control Station. No i can not ping Data Mover from my Backup Server. Please find the IP Address i am using in my Infra:

Backup Server : 171.168.26.180

Control Station : 171.168.26.102

Data Mover_1: 128.x.x.x

Data Mover_2: 128.x.x.x (Sorry, I don't have details)

CIFS Share IPs : 171.168.26.103 & 171.168.26.105

Just to check again, your original message had:

42571:inquire: Failed to Connect to port 10000 at host '171.168.26.102'  :No connection could be made because the target machine actively refused it.

Where 171.168.26.102 is the IP of your control station.  If this fails again the CIFS share IP, something else is wrong.  One less check:

From the command line, run the command "server_log serve_2 | grep NDMP".  It should look like on the command:

[nasadmin@emc_cs01$] server_log server_2 | grep NDMP

NDMP: session refused

And post any output.

Failing that, I would recommend opening a ticket with EMC.  They can help troubleshoot the problem and find a resolution.

Hi

I have tried "inquire -n ip_address" command on CIFS share as well but result is the same.

Are you suggesting that Data Mover IP should be in 171.x.x.x series which required for NDMP connection.

I am very much new on Cellera Storage so i dont know whether i am asking intelegent question on the subject matter.

Does Backup server talk to Data Mover for NDMP connection or Control Station is responsible for NDMP.

Thanks

Hi

I do appreciate your suggestion and making me understand NDMP backup process on Celerra.

In Response to your query about network:

- There may be a network firewall between your backup server and the datamover's public IP (171.x.x.x.)

There is no FireWall between Backup Server and the DataMover. They are connected to Non- Managed isolated Switch

- The backup server's own firewall may be blocking traffic on port 10000

We have disabled the Firewall on the Backup Server

- The IP addresses may be entered incorrectly somewhere

I have checked that also

Yes , My Backup Server (171.168.26.180) can ping DataMover's CIFS Share IPs (171.x.x.x).

Yes, Celerra can also ping Networker Backup Server on 171.x.x.x Network

Hi

I got the similar response with Control Station and CIFS share IP. I will try the given command and get back to you. I can do this only on monday.

Thanks a lot for your support.

The Celerra Network server works like this:

The Control Station has IP addresses on a back-end private network (128.x.x.x) that talk directly to the Datamovers on the same IP network (128.x.x.x).  These interfaces are not accessible to your users for management or data access (NFS, CIFS, etc.)  Ignore them and don't use them.

The Control station also has IP addresses on your public network (171.x.x.x) for management.  When you configure CIFS and NFS shares on your datamovers, they can be configured with public IP addresses on your public network (171.x.x.x).  These are the interfaces you should use for CIFS (which you already are) but also for NDMP.

The NDMP backup process works like this:

The datamovers listen on port 10000 on the public interfaces on your network, 171.xxx.  When a backup application logs in using the "ndmp" account and passwords you set, it will establish a session and enable the backup process.  If the backup server cannot talk to the datamover on the public interface, no authentication takes place, so no backup session can begin.  There are lots of reason why this communication might be blocked:

- There may be a network firewall between your backup server and the datamover's public IP (171.x.x.x.)

- The backup server's own firewall may be blocking traffic on port 10000

- The IP addresses may be entered incorrectly somewhere

Here's a simple test.  Can your backup server ping the CIFS share IP addresses?  Can the Celerra ping the backup server (you can do this from the GUI or the command line)?  If the answers are "no", there's a network issue - firewall or IP address setting.

Your ndmp client (the backup server) must be able to communicate with the Data Mover (not the control station) using tcp port 10000

Also, make sure you created a 'ndmp' user on the Data Mover as Karl said (with command /nas/sbin/server_user, use md5 passwd encoding option) as well as on the backup server (the ndnp client)

Claude

Hi

Thanks a lot for your support. Now i am able to see Tape Autoloader and Drive on Netwroker Server.