Shared Tape drives
In Our environment , we have one master server acting as media server also and two san media server and another sepaertae media server ( B).
Master servers and Media Servers : Windows 2008 R2 64bit
San Media Server : Linux OS
And one IBM L3 library drive with 12 drives and all the 12 drives are shared for Master server and San media servers.
And only two drives for Server B and if i need to use the two drives sexplicitely for the server B i need zoning change or i can down aother paths except B paths alone for the drives.