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Nayabsk's avatar
Nayabsk
Level 6
10 years ago

Backup Exec NDMP configuration

Hi All,

I need to configure NDMP backup on my backup exec to backup my Netapp, and i have tape library, and i have been reading the NDMP document and i have come across the statemement from Backup exec Admin Doc Page No:- 1787

" To configure Backup Exec to use theNDMPoption, you must add theNDMPserver
to Backup Exec. If any storage devices are attached to the NDMP server, Backup
Exec discovers them automatically after the services are restarted, and then adds
them to the list of devices."
 

This means i need to connect my tape autoloader only to my Netapp Storage , No need to zone it to my media server ? So as soon as i add my NDMP Device and restart my Backup exec Services my Tape drive attached to my Netapp will be added to device list , Later which i can choose this device to perform backup ? Am i right to say this ? May i know how this communication happens ? 

 

Also Can help me to understand backup exec actually performs an Incremental Backup using NDMP ? My understanding from Netbackup is that we cannot have an incremental backup because NDMP backup always dumps the whole volume/qtree of netbackup on to tapes but i doesn's perform an incremental. 

 

Any Document or white Paper would be a great help.

 

 

Thanks,

Nayab

  • 1) You can choose to connect the tape library only to the NetApp or Zone it to both NetApp and Media Server locations (kind of depends on whether or not all of the data you intend to backup is on the NetApp or if some of it is on separate remote systems.

    2) It is by design that as soon a you add the Netapp (with an attached library) and restart services even though the library is only attached to the NetApp that it will also show up under the media server. As far as I know it should be still reasonably obvious how to set the target device in the job, (although I do not have such a config available to check this)

    3) The way communication happens is Backup Exec sends NDMP requests to the NetApp's NDMP Data Mover to send the data straight to the NetApp's NDMP Tape Server, once the requests are sent, apart from some control and update information all further activity is performed within the NetApp (and therefore subject to how a NetApp actions NDMP requests.)

    4) Incremental backups are possible on a NetApp but using Levels - but it is fiddly as you have set setup a different job config for each day (with a single job definition)  to set the different levels:

    Level 0 = Backup Eveything (A full)

    Level 1 = Backup all changes since Level 0 ( so either first incremental or a differential)

    Level 2 = Backup all changes since Level 1 (2nd incremental)

    Level 3 = Backup all changes since Level 2 (3rd incremental)

    For more info on Levels please review NetApp's own documentation regarding NDMP backups

     

    BTW if your Netapp holds anything other than direct user data but instead holds data containers such as  LUNs, Exchange databases or Virtual Machines, then the NDMP option is not recommended because GRT is NOT available meaning you would only be able to restore the whole of the data container and not individual data contained within it. See this blog for LAN free descriptions that partially explain this

    https://www-secure.symantec.com/connect/blogs/lan-free-including-san-backup-configurations-backup-exec

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