Dell EMC Solutions Enabler 9.2 SRDF Family CLI User Guide

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Restrictions: Device types allowed for remove operations from a concurrent RDF1 consistency group

The following table lists the allowable device types for a dynamic modify remove operation on a concurrent R1 composite group enabled for consistency protection at the composite group level and the SRDF group name level.

Table 1. Allowable device types for removing devices from a concurrent RDF1 CG
Device type in CG	Enabled at CG level	Enabled at SRDF group name level
Simple R1 (R1->R2)	Allowed	Allowed
Concurrent R11	Not allowed	Only allowed if both mirrors are not enabled by the same SRDF group name.
Cascaded R1	Now allowed	Not allowed

Example

To remove devices 20 through 30 from SRDF groups 70 and 80 of ConCG on array 306 into SRDF groups 71 and 81 in the staging area:

symcg -cg ConCG modify -remove -sid 306 -stg_rdfg 71,81 -devs 20:30 -cg_rdfg 70,80