The following document describes the procedure to upgrade the Microcode on the IBM p590 systems. Upgrading the microcode requires the each frame in the pair to be powered-down, causing all systems running on the frame to be shutdown. Since production databases are running on each frame, a microcode upgrade requires the coordination of the AIX system administration team, DBA's, and application administrators.

  1. The first phase of this process is to upgrade the HMC associated with the p590 frames.
  2. Then failover all production systems to the alternate frame. Non-production systems will not be failed over, they will simply be shutdown.
  3. Next, power off the p590 frame and perform the Microcode upgrade.
  4. After microcode upgrade is complete and verified, power up the p590 and restart all systems.
  5. Failback all production systems and test.
  6. Repeat this process for the second p590 frame.




Phase 1

- Upgrade the HMC associated with the MDC p590 frames.


Phase 1 Start Time:
Phase 1 Duration:


Phase 2

- System Failovers

Failover all production systems to the alternate frame. Non-production systems will not be failed over, they will simply be shutdown.


Phase 2 Start Time:
Phase 2 Duration:



Phase 3

- Perform Microcode upgrade


Phase 3 Start Time:
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Phase 4

- Power on p590 Frame and activate systems


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Phase 5

- Application Failback

Failback the production databases, production application servers, and restart non-production systems.


Phase 5 Start Time:
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Phase 6

- Frame 51A974E System Failovers

The failover process will now be repeated on the second frame in preparation for performing the microcode upgrade on that frame.


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Phase 7

- Perform Microcode upgrade


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Phase 8

- Power on p590 Frame and activate systems


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Phase 9

- Application Failback

Failback the production databases, production application servers, and restart non-production systems.


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Phase 10

- NIM Server Upgrade

Perform microcode upgrade of NIM Server to latest.


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Phase 11

- Project Completion

Notify all interested parties of project completion.


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