nbu dedupe query

And some of your questions sent to me directly:
 

> 1....every data domain box or appliance box has a OS from where it can be operated?

Yes, Data Domains also run some unix OS (most likely a Linux variant).

> 2....If yes,then this OS has a host name which we called as storage server in NBU???

The appliance gets a hostname and a NetBackup media server name just as any other netbackup media server.

> 3...We give that name while configuring storage server??

When you boot the appliance for the first time it asks all necessary info, and it will create all storage server/disk pool configuration for you.

> 4...NetBackup Media Server Deduplication Option (master server, media server, client,
> or VMware backup host)

The 52xx appliance can be Master/Media server or Media server (and VMware backup host in either situation as well).

https://www-secure.symantec.com/connect/articles/netbackup-75-vmware-options-short-explained