I'm looking options for an office NAS device.

We've got about 2-3TB of data and it's critical that the data is secure.

So we are planning on having two devices, replicating the data/configuration.

So my questions are :

1. How well does the replication work?

2. What are recovery steps should you want the second replicated server to be the master? Can we just point to a secondary share for example? (\\nasprimary \\nasbackup) ??

3. How can we backup this data? Tape/Discs not an option for this size of data but we can get 2TB USB drives. Does DSS support backing up to USB drive? Can it span backups across drives?

Any other information or suggestions would be helpful!