IBM System storage DS6000 Series, Attachment Manual

Page: 120 / 298

Migrating from a FICON bridge to a native FICON attachment on
zSeries hosts: Mixed configuration
This section provides a FICON mixed configuration example.
Figure 44 on page 91 shows an example of an S/390 or zSeries host system with
one FICON channel and one FICON director through a channel-path group and
FICON host adapter to the storage unit. Figure 44 on page 91 also shows an S/390
or zSeries host system with one FICON channel and one ESCON director with a
FICON bridge through a channel-path group and two ESCON adapters.
Figure 44 on page 91 shows that one FICON bridge was removed from the FICON
configuration. The FICON channel that was connected to that bridge is reconnected
to the new FICON director. The storage unit FICON adapter is connected to this
new director. The channel-path group was changed to include the new FICON path.
The channel-path group is a mixed ESCON and FICON path group. I/O operations
continue to the storage unit devices across this mixed path group. Access to the
storage unit devices is never interrupted because all the actions are nondisruptive.
Note:
1. The configuration in Figure 44 on page 91 is supported for migration
only.
2. Do not use this configuration for an extended period.
3. Migrate from a mixed channel-path group configuration to an all FICON
channel-path group configuration.
S/390 or
zSeries Host
4 4
a storage unit
1 1
3
4 4
2 2
1udnf9
Figure 43. Example of how to configure a FICON bridge from an S/390 or zSeries host
system to a storage unit
90
DS6000 Host Systems Attachment Guide