Rob McNelly

Rob McNelly




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Recent Posts

  • Thoughts on Performance Tuning
    01/17/2017
  • The PowerVM Story Gets Better
    01/10/2017
  • Estimate rperf for your LPAR
    01/03/2017
  • Booting AIX in Debug Mode
    12/20/2016
  • Back Up Your HMC or Get Ready to Rebuild
    12/13/2016
  • A Look at HMC 8.2 (and Beyond)

    When you upgrade your HMC to Version 8.2, there's a new "tech preview" option that's intended to give you a feel for the direction that the HMC interface is heading. One of the big complaints heard from those new to POWER hardware and VIOS is how complicated it can all be to learn. I'm seeing a real effort being made to add greater functionality to the GUI so non-legacy POWER users can more easily adopt the platform.

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    Posted: June 23, 2015 |

    A Docker Primer

    Lately I've been reading about Docker, and it seems to keep coming up everywhere I look. If you haven't heard of it, it's an "open platform for developers and sysadmins to build, ship, and run distributed applications."

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    Posted: June 16, 2015 |

    Fixing RMC Connections to the HMC with 8.8.2 SP1

    Recently after upgrading to 8.8.2 SP1, I found my HMC was unable to communicate via RMC to my client LPARs.

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    Posted: June 09, 2015 |

    Getting Volume Group Info

    In environments with machines containing many volume groups and filesystems, we want easy ways of manipulating that information. There's always a need to know to know which filesystem is in which volume group. If you want to grow the size of a filesystem, you are going to want to know which volume group it is in so that you will be able to check if that volume group has free space available in it or not.

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    Posted: June 02, 2015 |

    Updating System Firmware

    If you're new to IBM Power Systems, you're new to upgrading the HMC. Furthermore, you're new to system firmware updates.

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    Posted: May 26, 2015 |

    When Rebooting, Don't Forget About the System Profile

    Recently a customer rebooted some systems that hadn't been restarted in more than a year. All of the LPARs and the VIO servers were powered off so maintenance could be performed. The customer was able to use live partition mobility to relocate the important LPARs. That left just the dev and test environments.

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    Posted: May 19, 2015 |

    E850 Among the New POWER8 Servers Announced by IBM

    On April 28, IBM announced new capabilities for existing POWER8 servers. Today, it’s announcing a new POWER8 server model.

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    Posted: May 11, 2015 |

    Handy Tool Provides Adapter Info

    As I've mentioned, I follow several AIX and IBM Power Systems pros on Twitter.
     
    Benoit Creau (@chmod666 on Twitter) is someone you should follow as well. He's been working on a new tool called lssea that "lists information and details about PowerVM shared Ethernet adapters.” 

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    Posted: May 05, 2015 |

    Why You Should Keep a Local Alt Disk Copy

    After upgrading an AIX system, a customer found that they needed to back out of the change. They ended up restoring rootvg from an mksysb.
     
    Although that's one way to do it, I don't recommend it. Of course you should have an mksysb around in case of a disaster, but you should also have a local alt disk copy available. This is true for any type of upgrade, but it's especially critical for both VIO server and regular AIX upgrades.

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    Posted: April 28, 2015 |

    Simplifying PowerVM Management

    In December I wrote about a document that covers HMC simplification. Actually, the doc isn't just about that. It's also about how IBM is trying to make managing PowerVM easier for customers.

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    Posted: April 21, 2015 |

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