Transparent sparing

Transparent sparing takes LP recovery one step further by combining the benefits of application preservation and concurrent CP sparing to allow for the transparent recovery of an LP and its applications (including CF LPs). Transparent sparing uses hardware to handle the recovery, requires no software support or operator intervention, and is effective for both shared and dedicated LP environments.

Transparent sparing configures a spare PU (processor unit) to replace a failed CP, ICF, IFL, SAP, or zIIP. The z17 model has 2 spare PUs.