Vital Tape Data (not HSM or Beta): VTAPE tape duplexing SW100 S/390 Host W81 S/390 Host Write tape data VTAPE Definition: Primary=Volser 100000 Secondary=Volser 200000 DASD PPRC mirroring HSC Definition Volser 100000 = W81 Volser 200000 = SW100 VOLSER=200000 VOLSER=100000 Figure 8-3 The IZB tape environment after relocation to Nuremberg Change of cabling technology During this period, the infrastructure in the Nuremberg data center was also revamped and enhanced. Connectivity to remote DASD and tape devices had previously been accomplished using traditional ESCON connections. Now, IZB became one of the first clients in the world to use FICON bridge mode channels to connect CPCs with remote devices. Cross-site connections were one of the most cost-intensive elements of the design the new