Dell EMC Solutions Enabler 9.2 SRDF Family CLI User Guide

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SRDF/Star operations summary

Table 1. SRDF/Star control operations
Control operation	symstar action	Description	Workload or target
Configure and bring up SRDF/Star	setup -options buildcg (at the Target sites) connect protect enable	Sample procedure showing the basic steps to configure and activate the SRDF/Star environment after the CG has been created.	W
Displaying the symstar configuration symstar show command symstar list command	query show list	Displays the status of a given SRDF/Star site configuration. Displays the contents of the internal definition for a given SRDF/Star site configuration. Lists each SRDF/Star composite group configuration, including workload name, mode of operation, CG and Star states, and target names and states.	W/T
Removal of a CG from SRDF/STAR control	setup -remove	Removes the CG from Star control.
Isolate SRDF/Star sites	isolate	Isolates one target site from the SRDF/Star configuration and makes its R2 devices read/write enabled to their hosts.	W
Unprotect target sites	unprotect	Disables SRDF/Star consistency protection to the specified target site.	W
Halt target sites	halt	Used to prepare SRDF/Star for a planned switch of the workload to a target site. This action write-disables the R1 devices, drains all invalid tracks and MSC cycles so that NewYork=NewJersey=London, suspends SRDF links, disables all consistency protection, and sets adaptive copy disk mode.	W/T
Clean up metadata	cleanup	Cleans up internal meta information and cache at the remote site after a failure at the workload site.	T
SRDF/Star consistency group operations	modifycg	Maintains consistency protection when adding or removing device pairs from an SRDF/Star consistency group.	W
Upgrade an existing SRDF/Star environment Transition SRDF/Star to use R22 devices	configure	Upgrades or transitions an existing SRDF/Star environment to employ R22 devices, provided the current SRDF/Star environment is operating in normal condition.	W
Begin SRDF synchronization	connect	Starts the SRDF data flow in adaptive copy disk mode.	W
Enable full SRDF/Star protection	enable	Enables complete SRDF/Star consistency protection across the three sites.	W
SRDF/Star consistency group operations	protect	Synchronizes devices between the workload and target sites and enables SRDF/Star consistency protection to the specified target site.	W
Change the SRDF/Star replication path Reconfiguring mode: cascaded to concurrent,Reconfiguring cascaded paths,Reconfiguring mode: concurrent to cascaded,Reconfigure mode without halting the workload site	reconfigure	Transitions the SRDF/Star setup from concurrent SRDF to cascaded SRDF or vice versa after a site or link failure, or as part of a planned event.	W
Reset after a transient failure Recovery operations: Concurrent SRDF/Star, Recovery operations: Cascaded SRDF/Star	reset	Cleans up internal meta information and cache at the remote site after transient fault (such as a loss of connectivity to the synchronous or asynchronous target site).	W
Switch workload operations to a target site Workload switching: Concurrent SRDF/Star, Unplanned workload switching: cascaded SRDF/Star Unplanned workload switching to asynchronous target site: Cascaded SRDF/Star	switch	Transitions workload operations to a target site after a workload site failure or as part of a planned event.	T
Verify that the given site or SRDF/Star setup is in the desired state Displaying the symstar configuration	verify	Returns success if the state specified by the user matches the state of the Star setup.	W/T