We have been using EMC's SRDF/A for almost 12 months now using z/os 1.4 About one month ago we migrated from 1.4 to 1.7 again using SRDF without any problems. This past weekend we put two of the 1.7 LPARS into a SYSLPEX along with GRS. Now we are seeing some programs that do lots of IO running longer (SYSTEM SLOW DOWNS). We do not see any enqueue/reserves that are outstanding from a GRS point of view. Now if we stop the started task for SRDF the system returns to normal without any slow downs. Does the configuration of SRDF need to know that we are running in a SYSPLEX? Any help or direction would be appreciated. PS EMC has been contacted, but no answers have been forth coming. TIA, Rogers
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