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Dell EMC Solutions Enabler 9.2 SRDF Family CLI User Guide

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Swap SRDF pairs

The swap operation swaps the personality of both halves in an SRDF relationship. The source (R1) device becomes the target (R2) device and the target (R2) device becomes the source (R1) device.

NOTE:

The current states of the various devices involved in the SRDF swap must be considered before executing a swap action. Table 1 lists which states are legal for this operation.

Restrictions

  • A swap cannot occur if the R1 device (which becomes the R2) is currently a target for a TimeFinder/Snap or TimeFinder/Clone emulation. A device may not have two sources for data (in this case, the R1 and the emulation source). The swap cannot occur even if the emulation session has already completed copying the data.
  • Adaptive copy write pending is not available when the R1 side of the RDF pair is on an array running HYPERMAX OS. If the R2 side is on an array running HYPERMAX OS, and the mode of the R1 is adaptive copy write pending, SRDF sets the mode to adaptive copy disk.

Example

To swap the R1 designation of the associated BCV RDF1 pairs in device group prod, and refresh the data on the current R1 side:

symrdf -g Prod -bcv swap -refresh R1

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