Running The Enhanced Remote Mirroring Utility; Configuration Utility - IBM System Storage DS3000 Programming Manual

4. On the secondary storage subsystem – The utility generates a FlashCopy of each participating
logical drive on the secondary side, which creates point-in-time images that are recoverable.
5. On the primary storage subsystem – The utility resumes the mirroring operations for all of the
participating logical drives. This action causes the mirrors to migrate to the Synchronized state and
start the process of restoring coherency between the primary site and the secondary site.
6. On the primary storage subsystem – The utility reconfigures all of the affected logical drives for
Asynchronous mode.

Running the Enhanced Remote Mirroring Utility

The Enhanced Remote Mirroring utility uses a command line argument that lets you specify the name of
a configuration file. The configuration file contains a complete specification of the input parameters that
are needed by the utility. To run the utility, enter this syntax:
asyncRVMUtil configuration_file -d debug_file
where configuration_file is the file that you provide as input. The configuration file specifies the Enhanced
Remote Mirroring logical drives that you want to synchronize by using the utility. When you create the
configuration file, use these conditions to define the logical drives in the file:
v All the primary logical drives in a logical drive set must belong to the same storage subsystem.
v The maximum number of logical drive sets that you can specify in the file is four.
v The maximum number of mirrored pairs that you can specify as part of a consistency group is eight.
The optional parameter, -d, lets you specify a file to which you can send information regarding how the
utility runs. In this example, the file name is debug_file. The debug file contains trace information that can
be reviewed by an IBM Technical Support representative to determine how well the Enhanced Remote
Mirroring utility has run.
Note: Depending on the location of the configuration file and the debug file, you must specify the
complete path with the file name.
To run the Enhanced Remote Mirroring utility, you must enter the asyncRVMUtil command from the
command line. Because UNIX operating systems are case sensitive, you must type the command exactly
as shown. On Windows operating systems, you can type the command in all uppercase, in all lowercase,
or in mixed case.
Note: To use the Enhanced Remote Mirroring utility, you must be managing the storage subsystem by
using the command line interface, not the graphical user interface of DS Storage Manager.

Configuration Utility

The configuration file is an ASCII flat text file that provides the information for the Enhanced Remote
Mirroring synchronization used by the Enhanced Remote Mirroring utility. The file defines the mirror
logical drive sets to be synchronized. All of the mirror logical drives in the logical drive sets defined in
the configuration file are run collectively to create a recoverable image. If any one of the mirrors in the
logical drive set fails, the operation is stopped for this logical drive set and carried on to the next logical
drive set that is listed in the configuration file.
The configuration file supports this syntax:
content ::= {spec}
spec ::= logSpec | logicalDriveSetSpec
logSpec ::= "Log" "{" {logAttribute} "}"
logAttribute ::= fileSpec
fileSpec ::= "file" "=" fileName
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IBM System Storage DS3000, DS4000, and DS5000: Command Line Interface and Script Commands Programming Guide