> It depends on what you call CF mirroring: System Managed Coupling Facility Structure Duplexing is supported now. This requires direct links between the CF's and these links seem to be limited to 5 km to prevent unacceptable delays.
According to "System-Managed CF Structure Duplexing", page 32 GM13-0103-05 (June 2004) <URL: http://www-03.ibm.com/servers/eserver/zseries/library/techpapers/pdf/gm13010 3.pdf > "Recommendation: In a GDPS/PPRC multi-site configuration, do not duplex CF structure data between coupling facilities located in different sites; rather, if desired, duplex the structures between two coupling facilities located at the same site. CF structure data is not preserved in GDPS site failover situations, regardless of CF Duplexing." There is no newer information on "Coupling Facility and the Parallel Sysplex" <URL: http://www-03.ibm.com/servers/eserver/zseries/pso/coupling.html > Regards, Zaromil ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
