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Dell EMC Solutions Enabler 9.2 SRDF Family CLI User Guide

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SRDF/EDP restrictions

The following rules apply when creating diskless SRDF devices:

  • A diskless device cannot be mapped to the host. Therefore, no host is able to directly access a diskless device for I/O data (read or write).
  • The diskless SRDF devices are only supported on GigE and Fibre RAs.
  • Other replication technologies (TimeFinder/Snap, TimeFinder/Clone, Open Replicator, and Federated Live Migration) do not work with diskless devices as the source or the target of the operation.
  • The symreplicate command returns an error if a diskless device is found in the configuration.
  • Diskless devices are not supported with thin CKD devices.
  • The R1 and R2 volumes must be both thin or both standard. For example:
    • Thin R1-> diskless R21->thin R2, or
    • Standard, fully provisioned R1 -> diskless R21 -> standard, fully provisioned R2.

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