For the NX300 the only supported OS is Windows Storage Server 2008 x64 Standard. You should have no problem installing backup exec onto the NAS server running 2008 Storage server. When it comes to the actual configuration, managing, and even installing the OS, please look over the following link as it has all that information in it for you.   In connecting a tape drive, you can use a RD 1000 External Tape drive and it will connect via USB. So as far as the backups you want to do local backups and then you want to backup to the remote site so the data is accessible to both locations? If that is what you are wanting to do, it is possible but you will need 4 windows remote  agent licenses for backup exec. Then you may also need additional backup agent licenses if you will be doing any backups of exchange, SQL, or any other files that is not the standard windows files. Let us know if you have any other questions.
Dear All, I've been recently hired in an international company,my manager is going to implement a storage/backup solution using Powervault nx300 servers,PowerVault 114dx 1000 tape drives and Symantec Backup Exec.  we have : -2 sites connected via WAN link  we want : -To install one Powervault nx300 nas server , one Powervault 114dx 100 tape drive on each site with Backup exec -Each site will be backed up on the local PowerVault nx300 NAS Server , and each site will be backed up on the remote site as well (each site will back up the remote site).  I'm really unfamiliar with storage,can you help me figure out how will this work ?  What operating system should be installed on the NAS Server ? Where will I install Symantec Backup Exec ? How many licenses will I need for the os and BExec ? How can I connect the Tape-Library to the Nas Server ?  Thanks for your help. Regards
Need help on powervault Implementation