CMMVC1264E The command failed because the partner system is running a software version prior to 8.7.0.0.

Explanation

Storage partitions cannot be configured for high availability while the partner is running a code version older than 8.7.0.0 due to missing functionality in the older code version. Configuring high availability for a storage partition is only permitted at the time it is created while the systems are running these code versions.