z/OS DFSMSdss Storage Administration
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FCTOPPRCPrimary

z/OS DFSMSdss Storage Administration
SC23-6868-01

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>>-+------------------------------------------------+----------><
   '-FCTOPPRCPrimary--+---------------------------+-'   
                      |    .-+-PresMirNone-+-.    |     
                      |    | '-PMN---------' |    |     
                      '-(--+-----------------+--)-'     
                           +-PresMirPref-----+          
                           +-PMP-------------+          
                           +-PresMirReq------+          
                           '-PMR-------------'          

FCTOPPRCPrimary specifies that if FlashCopy® is used to perform the copy operation, a Peer-toPeer Remote Copy (PPRC) primary volume is allowed to become a FlashCopy target volume. Use the following sub-keywords to specify whether the device pair is allowed to go to duplex pending state if the target volume of the FlashCopy operation is a metro mirror primary device:
PRESMIRREQ
specifies that if the target volume is a Metro Mirror primary device, the pair must not go into a duplex pending state as the result of a FlashCopy operations.
PRESMIRPREF
specifies that if the target volume is a Metro Mirror primary device, it would be preferable that the pair does not go into a duplex pending state as the result of a FlashCopy operation. However, if a Preserve Mirror operation cannot be accomplished, the FlashCopy operation is still to be performed.
PRESMIRNONE
specifies that Preserve Mirror operation is not to be done, even if all of the configuration requirements for a Preserve Mirror operation are met. If the target specified is a Metro Mirror primary device, the pair is to go into a duplex pending state while the secondary device is updated with the tracks to be copied. PRESMIRNONE is the default if you specify FCTOPPRCPrimary without a subkeyword.

Attention: When you specify FCTOPPRCPrimary or FCTOPPRCPrimary(PRESMIRNONE), the FlashCopy operation causes a PPRC primary volume to become a FlashCopy target volume. A Metro Mirror or Global Copy pair currently in full duplex state, goes into a duplex pending state when the FlashCopy relationship is established. When Metro Mirror or Global Copy completes the copy operation, the Metro Mirror or Global Copy pair goes to full duplex state. To prevent Metro Mirror or Global Copy pairs from going to duplex pending state during FlashCopy operation, you must specify FCTOPPRCPrimary(PRESMIRREQ).

Note:
  1. Using FCTOPPRCPRIMARY might require RACF® authorization.
  2. Do not specify the FCTOPPRCPrimary keyword with the PRESMIRPREF and PRESMIRREQ subkeywords, if you specify the FCSETGTOK keyword with FAILRELATION.
  3. Do not specify the FCTOPPRCPrimary keyword with the FASTREPLICATION(NONE) keyword.
  4. When FlashCopy is not used to perform the copy operation, the FCTOPPRCPrimary keyword is ignored.
  5. When FCTOPPRCPrimary is not specified or if the capability is not supported by the ESS, a PPRC primary volume is not eligible to become a FlashCopy target volume.

For more information about RACF authorization, see z/OS DFSMSdss Storage Administration.

For more information about RACF FACILITY class profiles, see z/OS Security Server RACF Security Administrator's Guide.

For more information about PPRC, Metro Mirror, Global Copy, and Global Mirror, see z/OS DFSMS Advanced Copy Services.

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