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SnapMirror relationships report a Preparing relationship status

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Applies to

  • ONTAP 9
  • SnapMirror
  • SnapVault
  • Unified Replication
  • Storage Virtual Machine Disaster Recovery (SVM DR)

Issue

  • An XDP SnapMirror or SVM DR transfer takes much longer than expected
  • It appears as if transfers are very slow, with low amount of data sent to the destination
  • snapmirror show  or ActiveIQ System Manager reports a Relationship Status of  "Preparing" for a significant amount of time

ClusterA::> snapmirror show
                                                                         Progress
Source             Destination  Mirror  Relationship   Total             Last
Path         Type  Path         State   Status         Progress  Healthy Updated
-----------  ----  ------------ ------- -------------- --------- ------- --------
svmSource:volSource
             XDP   svmDest:volDest
                                Snapmirrored
                                        Preparing       98.17GB  true    01/01 12:00:00

  • Both volume and SVMDR relationships can experience long periods of Preparing status after snapmirror resync
  • The Preparing operation may run longer and appear to transfer more data than a typical update operation

 

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