Troubleshooting › Tape Device Preferencing Problems › Less-preferred Device Allocated

Less-preferred Device Allocated

Symptom:

A job allocates a less preferred device when a preferred device is available.

Possible Causes:

TPCF is forced to choose from a group of less preferred devices, due to one or more of these reasons:

• z/OS ACL processing is eliminating more preferred devices
• z/OS generic preferencing, which is created during the SYSGEN process or by HCD, is forcing TPCF to choose from a group of less preferred devices.
• Preferencing done by another software package, for example, a robotic software package, is overriding TPCF preferencing.

Solution:

You must dynamically change the ACL status of your devices or change your preferencing setup.

If another software package is overriding TPCF preferencing, then you may need to contact the software vendor for information on customizing the preferencing of that product.