When a pair is split due to a failure, the primary system reports SCI and unit check status and sense bytes with F/M = FB. In response to the F/M=FB sense bytes, the IEA491E system console message is generated (if supported by the host). The following is an example of an IEA491E message:
IEA491E DSLFC0,PPRC SUSPENDED, SECONDARY NOT READY, INTERVENTION_REQUIRED,(PRI)SER=0113-90797,CCA=00 (SEC)SER=0113-90217,CCA=
If the host supports GDPS and the FREEZE option is enabled, the IEA494I system console message with extended long busy (which was generated in response to the SCI) triggers the CGROUP (FREEZE/RUN) command.