Customization › Multi-Access Spool (MAS) › File Creation and Queuing

File Creation and Queuing

In a Multi-Access Spool (MAS) configuration, files can enter the common queue from any system in the configuration. Unless special actions are taken, files are eligible for processing on any system in the configuration. Individual files are given affinity to a single system in the configuration. If the affinity of a file is to a specific system in the configuration, it can only be selected for processing by the system specified.

System affinity is useful if, for example, the node names of the output devices are not unique over the whole configuration.

• The display-file (DF) command indicates (by SMF system ID) the system in which a file is active, or the systems eligible to process a queued file.
• The reset-file (TF) command permits affinities of files with a given affinity to be changed.
• The list-systems (LSYS) command displays the status of all systems in the configuration.

If a failed system is unavailable, the operator can change affinity with the TF command to attempt restart on another system.