Scott is correct here.  And for further information the statistics from symstat are also discussed in the array management cli guide [URL]  You have a full explanation on Page 266 on this particular output
HI,  For below command, Im trying to understand which is the active cycle, Is it Capture/Apply or Transmit/Recieve? Please help to understand  C:\>symstat -i 5 -type cycle -g WIN_HOAPPSQLDB1 -RepType rdfa SRDF/A Session Cycle Summary Information Symmetrix ID  : XXXXXXXXXXTimestamp     : 16:23:38                          Session    Cycle Time  (sec)        Cycle Size                       ----------- ------------------- -----------------------                  RA   FLGS Active               LastDevice Group Name Grp  TAS  Cycle# Min Avg Last Switch Active  Inact   Shared----------------- ---  ---- ------ --- --- ---- ------ ------- ------- -------WIN_HOAPPSQLDB1    31  1YA   42397  15  15   15      7       2       0       0 Legend for Session Flags:   T(ype)          : 1 = RDF1, 2 = RDF2  A(SYNC)         : Y = Yes, N = No  S(tatus)        : A = Active, I = Inactive, - = N/A Legend for the Attribute of Cycle Size:   RDF1: Active = Capture  Inactive = Transmit  RDF2: Active = Apply    Inactive = Receive
Need help with symstat output