BS2000 volumes which are connected to a /390 server are operated on configured volumes with FBA track format via one or more Fibre Channel-HBAs (Host Bus Adapters). They are always connected to the storage system via an FC switch.
On /390 servers the Fibre Channel connection is implemented over channel type IBF (MODE=FCP), see the "System Installation" manual [6].
BS2000 volumes connected to a /390 server via a channel must be configured on storage system (1), switch (2) and BS2000 (3) levels (the level numbers as used in figure 4 are in parentheses). The figure shows the various levels, taking ETERNUS CONFIG as an example. The WWN of the Fibre Channel port (WWPN) of the storage system must be set for the channel at generation.
CAUTION!
If configuration changes are made on the storage system which change the assignment of the logical volumes to the storage system's FC adapter, no devices of any VM may be assigned when operating with VM2000.
Figure 4: Configuration of the units on /390 servers for ETERNUS DX/AF