Dell EMC Solutions Enabler 9.2 SRDF Family CLI User Guide

Configure and bring up SRDF/Star

1. Verify the SRDF/Star control host is locally connected to only one of the three sites.

   Step 1: Verify SRDF/Star control host connectivity

2. Verify the settings for each array to be included in the SRDF/Star configuration.

   Step 2: Verify array settings

3. NOTE:The RDF groups between all the SRDF/Star sites must exist and the RDF device pairs must be created between the applicable SRDF/Star sites, before creating the SRDF/Star composite group. Refer to Dynamic Operations, Concurrent Operationsand Cascaded Operations.
   Create a composite group at the workload site.

   Step 3: Create an SRDF/Star composite group

4. Create an SRDF/Star options file containing specific parameters for the setup procedure.

   Step 4: Create the SRDF/Star options file

5. Issue the SRDF/Star symstar setup command to read and validate the information in the host composite group definition, and build the SRDF/Star definition file that defines the R1 composite group.

   Step 5: Perform the symstar setup operation

6. Optionally, issue the symstar buildcg command to build the matching composite groups on the Star control hosts at the target sites.

   Step 6: Create composite groups on target sites

7. Optionally, add BCVs to the SRDF/Star configuration.

   Step 7: (Optional) Add BCV devices to the SRDF/Star configuration

8. Bring up the SRDF/Star configuration.

   Step 8: Bring up the SRDF/Star configuration

   To perform SRDF/Star operations with access control enabled, the SRDF, BASECTRL, BASE, and BCV access types are required.

   Dell Solutions Enabler Array Controls and Management CLI User Guide provides more information.

   NOTE:

   An SRDF/Star environment contains one or more triangles, where each triangle has a unique SRDF group for the synchronous link, the asynchronous link, and the recovery group link. No sharing of SRDF groups is allowed between any two SRDF/Star triangles.

   The examples in this section use the following names:

   • StarGrp - the composite group and
   • NewYork - workload site
   • NewJersey - synchronous target site
   • London - asynchronous target site
9. Optionally, configure a non-R22 STAR CG to an R22 STAR CG.
   Transition SRDF/Star to use R22 devices