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Youness's avatar
Youness
Level 3
7 years ago

restore from replicated datadomain VTL and Storage units

hi,
we have the following setup currently:

-DD2500+NBU master server in main site+clients

-DD640+NBU Media server at DR site

-data is written to VTL and storage pools/units

- replication is done over DD, no SLP.

we wanted to test restore in DR using the Media server in DR and the data present in the DD640, that seemed to be impossible due to not having a catalog in DR,

now we are planning to make the media server in DR a standby master server, import the catalog and try to restore from VTL and storage units,

do you think the restore is feasible in this scenario?
how can the standby master server detect the replicated storage units?

thanks;

 

 

 

  • I don't want to be very critical but the proposed approach raises quite a few questions of techical nature, for example how you are planning to implement a standby master from a media, is it the same domain or different? are you going to shut down your production master when running from the standby?

    You actually can restore in DR provided the DR media server can connect to the master in production to query the catalog, any other scenario requires DR for the master server and replication of just backup images is not enough - you should also replicate the catalog or the master itself using either a compatible replication technology or building a cluster. Alternatively you can take a catalog backup and restore it to a temp VM/server with the same name as your production master. This new server should be either isolated in the network or you primary master should be shut down while you do DR restores to avoid naming conflicts.

    • Youness's avatar
      Youness
      Level 3

      hi,

      yes we are planing to turn off the master server in main site and use the same name of master server in DR site.

       

      • Mouse's avatar
        Mouse
        Moderator

        Then it's a no-brainer. You restore the catalog to a stand-by machine, "export" relevant tape in DD console (check EMC guides how to do it) and Bob's your uncle. You just need to make sure that the DD in DR is zone to the server you will be using as the media server and your NBU has that virtual robot configured and run robot inventory to update the EMM.

        All these steps are pretty well covered in Dell EMC guides.