Our setup here is Windows 2000 server, with TSM 4.2.1.6 connected to a Compaq 
SAN via fibre switch. We have a Modular Data Router connected to a 9236EX DLT 
library and to the SAN via fibre, this MDR takes data via the fibre and sends 
it down the SCSI cable to library.

Not sure if you need a MDR or not, depends if you have direct fibre attachment 
to the library or not. All server connected to the SAN will be able to see the 
library unless you put restriction in.