1. A method for consistency group formation, the method comprising: determining, by one or more primary storage devices, if one or more of a plurality of primary volumes associated with a current consistency group has completed sending out-of-sync (OOS) data towards one or more secondary volumes associated with the plurality of primary volumes, respectively; responsive to the one or more of a plurality of primary volumes completing sending OOS data, sending, by the one or more primary storage devices, an “EnableNextCGSidefiles” command, not associated with the current consistency group, toward the plurality of secondary volumes for execution, respectively; sending, by the one or more primary storage devices, change recording (CR) data associated with the next consistency group, toward the secondary volume and storing the CR data in the “NextCGSidefile;” determining, by the one or more primary storage devices, if the plurality of primary volumes associated with the current consistency group have completed sending out-of-sync (OOS) data towards a plurality of secondary volumes associated with the plurality of primary volumes, respectively; responsive to the plurality of primary volumes completing sending OOS data, stop sending, by the one or more primary storage devices, CR data toward the plurality of secondary volumes, respectively; sending, by the one or more primary storage devices, a “DisableNextCGSidefiles” command toward the plurality of secondary volumes for execution; and sending, by the one or more primary storage devices, a “HardenNextCGSidefiles” command toward the plurality of secondary volumes for execution.