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Difference between EMM and Media Server.

anil_kumar731
Level 4
Certified

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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Accepted Solutions

Marianne
Moderator
Moderator
Partner    VIP    Accredited Certified

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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Ashish-Sharma
Level 6
Accredited

Marianne
Moderator
Moderator
Partner    VIP    Accredited Certified

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....)

 

anil_kumar731
Level 4
Certified

Hi Marianne,

I would like to know whether EMM and media server is same or not..

Marianne
Moderator
Moderator
Partner    VIP    Accredited Certified

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
Level 6
Employee

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).