Dell EMC Solutions Enabler 9.2 SRDF Family CLI User Guide

Restrictions

Use the -restore option to copy data back to the R1 source devices.

Once the SRDF device pairs are created, the restore operation begins copying data to the source devices, synchronizing the dynamic SRDF device pairs listed in the device file.

• The device cannot be the source or target of a TimeFinder/Snap operation.
• Devices cannot be in the backend not ready state.
• The emulation type must be same (such as, AS/400 has specific pairing rules).
• SRDF device pairs cannot be created in an SRDF/Metro Witness group
• You cannot create pairs using the -restore option in any of these circumstances:
  • an optimizer swap is in progress on a device.
  • there are local invalid tracks on either the local or remote device.
  • an SRDF/A session is active and -exempt is not specified.
  • the SRDF group is in asynchronous mode and the devices being added are not the same SRDF type R1 or R2.
  • the SRDF group is in asynchronous mode with the SRDF links suspended and the -restore option is selected.
  • the SRDF group is enabled for SRDF consistency protection.
  • the operation involves one or more of the following unsupported devices: VCM DB, SFS, RAD, DRV, RAID-S, WORM-enabled devices, 4-way mirror, Meta member.

Example

symrdf createpair -sid 55 -file devicefile -rdfg 1 -type R1 -restore