Error reporting communications (ERC) transfers information between host processors at the primary and secondary sites. It is a critical component of a disaster recovery effort.
You can configure ERC using channel-to-channel communications, NetView technology, or other inter-connection technologies depending on your installation requirements and standards. TrueCopy for Mainframe and VSP One Block 85 do not provide ERC between the primary and secondary sites.
- When TrueCopy for Mainframe is used for disaster recovery, ERC is required to ensure effective recovery operations.
When a pair is split due to an error condition, the primary storage system generates sense information that results in an IEA491E system console message. This information should be transferred to the secondary site using ERC for effective disaster detection and recovery.
- When TrueCopy for Mainframe is used for data migration, ERC is recommended.