Hi !
There is SAN but very poor so I can not share disk storage I use it only for sharing tape drives. So I can not configure NB server in HA cluster. I don't want to buy something to async. replication of file system too, but I would like to make my environment save.
I have two different domain with NB servers and two libraries. Sharing drives of second library would be used to make copy of data. NB server would write backups of clients in first library and at the same time to second library in sec. location. In case of disaster of my first location I still be able to import tapes (from first NB server) by second NB server because there are in shared libraries actually without restoring of catalog of NB server.