Hitachi TrueCopy for IBM z/OS User and Reference Guide (T5211-96001, June 2007)

TrueCopy for z/OS Usage Scenarios 7-3
Hitachi Universal Storage Platform V TrueCopy for IBM z/OS User’s Guide
3. Establish file and database recovery procedures. These procedures should
already be established for recovering volumes which become inaccessible due
to control unit failure.
4. Install and configure error reporting communications (ERC) between the main
and remote sites. ERC is essential if you use the M-VOL fence level setting of
Status or Never for any TCz pairs.
5. Configure the primary host system to use the IEA494I message as a trigger
for automation rather than the IEA491E message. The IEA491E message is
reported to only one host, whereas the IEA494I message is reported to all
attached MVS hosts each time the M-VOL pair status changes.