Most people I work with now know that I am a relatively active user of social media and business networking tools, including Facebook, Twitter, DeliciousLinkedIn and Plaxo.  In fact, over the past six months, my blogging dropped off significantly, but my use of social media and business networking tools accelerated.

One of my clients was asking about the size of the installed base of Geographically Dispersed Parallel Sysplex (GDPS), wondering if it was a market large enough to justify the investment needed to integrate with  their own solution.  They also wondered about the penetration rate for GDPS within the installed base of z/OS licenses.  That’s rather esoteric stuff, unless you cut your teeth on IBM mainframes, as I did. (more…)