Home > Storage > PowerMax and VMAX > Data Protection > Dell PowerMax and VMAX All Flash: SRDF/Metro Overview and Best Practices > Movepair –exempt
HYPERMAX OS releases prior to PowerMaxOS 5978 have not allowed movepair operations into or out of an SRDF/Metro group (while suspended or active). To support movepair operations with PowerMaxOS 5978 and later, the source SRDF group and devices must be Adaptive Copy or Synchronous modes (not SRDF/A). Target SRDF/Metro group may now be Active with device pair states of Suspended, SyncInProg, ActiveActive, or ActiveBias. As with any newly added SRDF/Metro devices, R1 devices will remain host accessible and R2 will remain inaccessible to the host until these devices reach active mode.
Note: The SRDF R1/R2 ‘polarity’ of the source SRDF device pairs must match that of the target SRDF group. For example, R2 devices on one side of the link may not be moved into a group where the devices have R1 personalities. As with ‘createpair –exempt’, movepair can only be used if the active SRDF/Metro group does not contain exempt devices
The following command moves the existing SRDF pairs described in file xxx from SRDF group 10 on array 456 to the SRDF/Metro group 8:
symrdf ‑sid 456 ‑rdfg 10 ‑file xxx movepair ‑new_rdfg 8 ‑exempt
This movepair command requires and accomplishes the following:
See Appendix C: Unisphere Movepair –Exempt specific steps for a Unisphere for PowerMax example of the Movepair –Exempt operation described above.