> -----Original Message----- > From: IBM Mainframe Discussion List On Behalf Of TISLER Zaromil > > > 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 >
Interesting. That recommendation and limitation are not repeated in this July 2005 Redbook on GDPS: <http://www.redbooks.ibm.com/abstracts/sg246374.html?Open> -jc- ---------------------------------------------------------------------- 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
