Remote Copy volumes and synchronization

To reduce the impact of synchronization on the performance of the storage systems, Remote Copy manages the number of virtual volumes that synchronize at the same time. For example, if Remote Copy is in the process of resynchronizing virtual volumes in an asynchronous periodic mode volume group, some of the first volumes complete synchronization before some of the last volumes start synchronizing.

To view resynchronizations, monitor the SyncStatus column of the showrcopy command output.

showrcopy

Group Information

Name         Target         Status   Role       Mode     Options
syncGroup1   Target_System2 Started  Primary    Sync
  LocalVV      ID   RemoteVV     ID   SyncStatus    LastSyncTime
  VV1          201  VV1           92  Syncing (0%)  NA
  VV2          202  VV2           93  Syncing (0%)  NA

showrcopy

Group Information

Name         Target         Status   Role       Mode     Options
syncGroup1   Target_System2 Started  Primary    Sync
  LocalVV      ID   RemoteVV     ID   SyncStatus    LastSyncTime
  VV1           201 VV1            92 Syncing (60%) NA
  VV2           202 VV2            93 Syncing (60%) NA

showrcopy

Group Information

Name         Target         Status   Role       Mode     Options
syncGroup1   Target_System2 Started  Primary    Sync
  LocalVV      ID   RemoteVV     ID   SyncStatus    LastSyncTime
  VV1           201 VV1            92 Synced        NA
  VV2           202 VV2            93 Synced        NA