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anil_kumar731's avatar
anil_kumar731
Level 4
12 years ago

Difference between EMM and Media Server.

Hi,

 

      I am new to netbackup and want to clear some doubts regarding media server and EMM.

and what is difference between relational database and emm database?

Kindly provide an explanation.

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  • Marianne's avatar
    Marianne
    12 years ago

    EMM and master server is the same.

    Master server can be just that: Master/EMM server, but can also be configured as a Media server.

    Media servers can be configured on separate server(s) where devices are attached.
    Media servers have no databases.
    All config for media servers exist in EMM database on the master server. 

    See Figure 1 on p.6 of 'Getting Started' Guide.

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  • Marianne's avatar
    Marianne
    Level 6
    12 years ago

    See the NetBackup Getting Started Guide for description of the various NBU components.  

    The Master server is also the EMM server. It can be a different server, but in all my years working with NBU, I have never seen anyone installing EMM on a separate server.

    Components of the Relational database is described in Chapter 18 of :


    NetBackup Administrator's Guide for UNIX and Linux, Volume I

    NetBackup Administrator's Guide for Windows, Volume I

    under the topic:

     

    About the NetBackup relational database
    Extract:
     
    Generally, the implementation of Sybase SQL Anywhere in the NetBackup catalog
    is transparent. NetBackup installs Sybase SQL Anywhere during the master server
    installation as a private, non-shared server for the NetBackup database (NBDB).
    NBDB contains the NetBackup Authorization database, the Enterprise Media 
    Manager (EMM) data, as well as other NetBackup data that NetBackup services
    use.
    The same installation of Sybase SQL Anywhere is used for the optionally-licensed
    product, Bare Metal Restore (BMR) and its associated database (BMRDB). The BMR
    database is created during the BMR installation process.
    By default, the NetBackup relational database (NBDB) is installed on the master
    server. The master server is also the default location for the Enterprise Media
    Manager (EMM) server. Since EMM is the primary user of NBDB, the NetBackup
    database always resides on the same computer as the Enterprise Media Manager.
     
    (See manual for more....)

     

  • Marianne's avatar
    Marianne
    Level 6
    12 years ago

    EMM and master server is the same.

    Master server can be just that: Master/EMM server, but can also be configured as a Media server.

    Media servers can be configured on separate server(s) where devices are attached.
    Media servers have no databases.
    All config for media servers exist in EMM database on the master server. 

    See Figure 1 on p.6 of 'Getting Started' Guide.

  • revarooo's avatar
    revarooo
    Level 6
    12 years ago

    No. EMM database contains tables of database information.

    Media server is a server that performs a backup to tape or disk.

     

    Of course the EMM server may also be acting as a Media server too (if configured).