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
  • Thoughts on Performance Tuning

    I recently discovered this post to the UNIX & Linux Forums. While it's from 2013, "The Most Incomplete Guide to Performance Tuning" has some great -- and still relevant -- ideas.

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    Posted: January 17, 2017 |

    The PowerVM Story Gets Better

    Why do I consider PowerVM to be such a powerful virtualization technology? It has many advantages compared to competing virtualization technologies, including the capabilities it borrows from the mainframe.

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    Posted: January 10, 2017 |

    Estimate rperf for your LPAR

    This post outlines a recent Nigel Griffiths tweet about estimating rperf for your LPAR. Read on to find out more.

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    Posted: January 03, 2017 |

    Booting AIX in Debug Mode

    I recently had an AIX LPAR that wasn't booting. In an effort to gather information, IBM Support had me boot it a few different ways. This document details what we needed to do. I'm copying it here because I want to make sure you're aware of this option.

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    Posted: December 20, 2016 |

    Back Up Your HMC or Get Ready to Rebuild

    A customer had an HMC issue. There were no backups, so the HMC had to reinstalled from scratch. There wasn't any documentation either, meaning that the customer had no idea what the network settings should be.

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    Posted: December 13, 2016 |

    Bare Metal Recovery Options for Linux

    I recently wrote about backups, though I didn't get into the bare metal recovery options for Linux. I wrote about this topic in 2005, and here I am, 11 years later, still wondering where is my integrated bare metal recovery mechanism for Linux? The answer is still going to include Storix, though there's another utility that may also work for you.

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    Posted: December 06, 2016 |

    Tech Terms Defined Redefined

    I love clever definitions of technology-related terms. In the past I mentioned the IBM Jargon and General Computing Dictionary (which will be 30 years old soon).

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    Posted: November 29, 2016 |

    Adjusting to a Linux World

    I use Linux, and have for many years. I run Linux on Power hardware, which is something any Linux enterprise user should consider. Still, I prefer to live in the world of AIX. I understand that Linux is a fixture now, but there are features and capabilities that I take for granted with AIX that aren't there (at least not yet) with Linux.

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    Posted: November 22, 2016 |

    Another Case for Backups

    As I've mentioned, the AIX mailing list is a great place to go to pose questions and receive good answers from other AIX pros. While traffic is typically pretty light, I recently came across an interesting thread about the need to take care when editing critical files.

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    Posted: November 15, 2016 |

    Building Virtual Environments

    This IBM developerWorks page offers helpful information about building virtual environments. While it hasn't been updated in awhile, the content is certainly relevant.

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    Posted: November 08, 2016 |

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