Planning for operating an XRF complex

When operating with XRF, it is important that the staff understand the single-system image and have an awareness of what physically belongs to active or alternate subsystems, what is shared, and generally where system and database data sets are located.

The operator preparation is mostly knowing the division of responsibility when processing moves to an a different processor as a result of a takeover.

Regardless of whether master terminal operations staff have master terminals close to one another, close communication is required.

There are several considerations when you plan changes to your operational control for XRF. These considerations are:

• Whether additional staff should be responsible for an alternate subsystem and assume full control when that subsystem becomes the active
• Whether a relocation of the IMS master terminal and z/OS® alternate subsystem console is necessary
• How additional takeover activities and other procedure changes are to be incorporated into run books
• Whether a takeover should proceed automatically or by means of operator intervention when the alternate subsystem makes a takeover decision