Dell EMC Solutions Enabler 9.2 SRDF Family CLI User Guide

When creating an SRDF/Star configuration with R22 devices, verify/perform the following:

• The STAR compatibility mode must be set to v70 (the default value).

SYMCLI_STAR_COMPATIBILITY_MODE=v70

See Step 4: Create the SRDF/Star options file.

• All devices at the workload site must be configured as concurrent (R11) devices with one mirror paired with the R2 mirror of the remote R21 device (synchronous target site) and the other mirror paired with an R2 mirror of the remote R22 device (asynchronous target site).
• All devices at the sync target site must be configured as R21 devices paired with an R1 remote partner at the workload site and an R2 remote partner at the asynchronous target site.
• All devices at the asynchronous target site must be configured as R22 devices paired with an R21 remote partner at the synchronous target site and an R11 remote partner at the workload site.
• Create the appropriate RDF1 composite group (CG), adding the devices to the CG, setting RDFG names, and so on. Note that in contrast to other SRDF/Star configurations, recovery SRDF groups do not need to be set in the CG for concurrent configurations.
• Once the configuration is ready, execute the symstar setup command using the -opmode option to choose either concurrent or cascaded operation.

The symstar setup command is allowed if the following SRDF pair states are Suspended, Synchronized, and SyncInProg:

• workload to synchronous target,
• workload to asynchronous target, or
• workload to synchronous target,
• synchronous target to asynchronous target site.

Example

symstar -cg StarGrp setup -options MyOptnFile.txt -opmode concurrent
A STAR Setup operation is
in progress for composite group StarGrp. Please wait...
Setup ...............................................Started
Reading options file options.txt ....................Started
Reading options file options.txt ....................Done
Analyzing Host Composite Grp: r22cg .................Started
Syncing    Symmetrix information ....................Started
Syncing    Symmetrix information ....................Done
Gathering  Symmetrix SID: 000192600077 RDFG: 66......Started
Gathering  Symmetrix SID: 000192600077 RDFG: 66......Done
Gathering  Symmetrix SID: 000192600077 RDFG: 67......Started
Gathering  Symmetrix SID: 000192600077 RDFG: 67......Done
...
Distributing setup information to remote sites ......Started
Distributing setup information to remote sites ......Done
Update persistent state information .................Started
Update persistent state information .................Done
Setup ...............................................Done