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Status Delivered
Workspace IBM Z and LinuxONE Systems Hardware
Categories General/Miscellaneous
Created by Guest
Created on Feb 15, 2019

RELATED IDEAS

Support for GA2 to GA1 driver downgrade option

While planing to upgrade z14 GA1 to GA2 driver, the customer asks IBM to prepare guaranteed contingency revert plan in the case of GA2 driver causes the customer's production system failure. Unlike MCL apply, GA2 driver upgrade includs lots of new functions and pre PTFs, CFCC level change, so it is such a big event for the customer. As we contacted to Z AP PE team to guide GA2 to GA1 revert plan but the answer was "No support for downgrading driver and if the failure occurs, PE will try to fix it". However the customer will never accept such answer because they cannot estimate how long time they need to stop their system until PE fix a failure. The client needs to plan a detailed time schedule for GA2 driver upgrade and it must be included a contingency plan which is detailed and clear how long required to return their system to normal operation. So the customer desires IBM to provide GA2 to GA1 downgrade option.

Idea priority Urgent
  • Guest
    Reply
    |     Aug 21, 2020

    Thank you for your feedback. IBM Z has been moving to a continuous delivery for FW updates, which allows smaller incremental FW updates rather than one larger GA2 driver change. z15 is the first family generation to take advantage of this approach. The HMC functions have also been updated to include more granularity and timing control for MCLs. Please let us know if this does not address planning needs as desired.

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