Though I agree with you on this, I can see where someone could have a different mind set on it. In particular, I am thinking of how maintenance is done on my Fedora13 Linux system. I don't have an alternate boot disk that is updated. I update the "running" system. Of course, this is possible because of the way that Linux is designed. And that it is much simpler than z/OS. The equivalent of IPL text is the MBR on the selected device. That boots GRUB (or LILO) which is a small OS (NIP equivalent?) which can display a boot menu (like z/VM does if you want). It then can load a complete RAM image of the boot LINUX system, which is smart enough to get the rest of the system going. This allows for booting different versions of the LINUX kernel. Of course, Linux is __significantly__ simpler than z/OS. Just as z/VM is much simpler than z/OS and so has a similar CPLOAD facility to select different versions of z/VM to boot from a single IPL pack.
Somebody from a LINUX environment could well consider z/OS maintenance to be a nightmare! ________________________________________ From: IBM Mainframe Discussion List [ibm-m...@bama.ua.edu] On Behalf Of Tom Marchant [m42tom-ibmm...@yahoo.com] Sent: Thursday, September 30, 2010 6:41 AM To: IBM-MAIN@bama.ua.edu Subject: Re: IPLTEXT and NUCLEUS dates On Thu, 30 Sep 2010 08:46:54 +0200, Tidy, David wrote: >We have our sandbox system where we run SMP/E - and it's the only system >where SMP/E is installed. We do choose to apply maintenance on this >running system .... The gun is loaded, aimed at your foot and it has a hair trigger. And you want our systems to be at risk of being loaded with incompatible IPLTEXT so you don't shoot yourself in the foot? Fortunately for the rest of us, IBM will not likely take your request seriously. -- Tom Marchant ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
