SQL 2012 AlwaysON Availability Groups Backup with NMM 2.4

Hi there

Wee need to backup Databases on a SQL 2012 Always On Availability Group.

With NMM 2.4, the Availability Groups from SQL 2012 are supported, but i can 't find a Dokumentation for setup the backup.

We use following Products:

Database Server:SQL2012 Enterprise Edition

OS: Windows 2008R

Hypervisor: VMWARE vSPhere 5.1

I installed the NMM 2.4 Client on the VM's and try to backup the model Database.

Save set: MSSQL:model

We configured the Networker Client with the following command:

nsrsqlsv -A Servername

Theres a error when i do the backup:

43708:(pid 2688):Start time: Fri May 03 09:55:04 2013
43621:(pid 2688):Computer Name: Servername    User Name: SYSTEM
29100:(pid 2688): Invalid SQL virtual server name servername
38563:(pid 2688): Invalid option -A
37758:(pid 2688): Usage: nsrsqlsv [ ] {path}
options: [-CGjqRTvkuHXZ] [-s server] [-N name] [-b pool] [-g group]
         [-S count] [-l level] [-m masquerade] [-U user [-P passwd]]
         [[-A virtual-server] | [-c client]] [-a device interface=data domain] [-f aes] [-w browse] [-y retention]
         [[-A virtual-server] | [-c client]] [-a De-duplication backup=yes] [-a De-duplication node= ] [-a De-duplication client name= ] [-f aes] [-w browse] [-y retention]
path:    d-path | i-path
d-path:  MSSQL: | [MSSQL:]s-path [[MSSQL:]s-path [...]]
i-path:  MSSQL$inst-name: | MSSQL$inst-name:s-path [...]
s-path:  database | database. | database.filegroup |
         database.filegroup. | database.filegroup.file
43709:(pid 2688):Stop time: Fri May 03 09:55:04 2013

srv00801.intmain.introot.bkw-fmb.ch:MSSQL:model: No full backups of this save set were found in the media database; performing a full backup
srv00801.intmain.introot.bkw-fmb.ch:MSSQL:model: retried 1 times.

Is there somewhere a step by step Dokumentation how we can configure SQL2012 Backups ?