GLYPH<SM590000> The name of a file that contains a list of files to be migrated.  GLYPH<SM590000> Any optional parameters that are specified with the  OPTS  clause in the rule. These optional  parameters are not interpreted by the IBM Spectrum Scale policy engine, but by the  method that IBM Spectrum Archive EE uses to pass the tape cartridge pools to which the  files are migrated.  GLYPH<SM590000> IBM Spectrum Scale: Administration and Programming Reference Guide : GLYPH<SM590000> Tivoli Field Guide - TSM for Space Management for UNIX-GPFS Integration  white paper: After the file system is configured to be managed by IBM Spectrum Archive EE and the  migration callback is configured, a policy can be set up for the file system. The placement  policy that defines the initial placement of newly created files and the rules for placement of  restored data must be installed into IBM Spectrum Scale by using the  mmchpolicy  command.  If an IBM Spectrum Scale file system does not have a placement policy installed, all the data  is stored in the system storage pool.  https://www.ibm.com/support/docview.wss?uid=swg27028178 https://www.ibm.com/support/knowledgecenter/STXKQY For more information, see the following publications: For more information about how to create and set a fail-safe policy, see 8.10, “Real world use  cases for mmapplypolicy” on page 235. In the  mmaddcallback  command in Example 7-57, the  --command  option points to a sample  script file called  /usr/lpp/mmfs/bin/mmapplypolicy . Before you run this command, you must  ensure that the specified sample script file exists. The  --event  option registers the events for  which the callback is configured, such as the “low disk space” events that are in the command  example.  The migration callback is used to register the policy engine to be run if a high threshold in a  file system pool is met. For example, after your pool usage reaches 80%, you can start the  migration process. You must enable the migration callback by running the  mmaddcallback command. Callbacks are provided primarily as a method for system administrators to take notice when  important IBM Spectrum Scale events occur. It registers a user-defined command that IBM  Spectrum Scale runs when certain events occur. For example, an administrator can use the  low disk event callback to inform system administrators when a file system is getting full. To set up automated IBM Spectrum Scale policy-driven migration to IBM Spectrum Archive  EE, you must configure IBM Spectrum Scale to be managed by IBM Spectrum Archive EE. In  addition, a migration callback must be configured.  Important:  IBM Spectrum Archive EE supports only the  MIGRATE ,  PREMIGRATE , and  RECALL  subcommands. mmaddcallback MIGRATION --command /usr/lpp/mmfs/bin/mmapplypolicy --event  lowDiskSpace --parms “%fsName -B 20000 -m <2x the number of drives>  --single-instance” Example 7-57 A mmaddcallback example 162  IBM Spectrum Archive Enterprise Edition V1.2.6: Installation and Configuration Guide