On 8/21/2014 7:08 PM, Shane Ginnane wrote:
Hmmm. Note the careful wording - "System z". How many of those leaving the platform were "legacy" (say z/OS) customers ?. How many of the new clients were non-zLinux ?. What's the delta ?.Some 23 of the world's top 25 retailers, 92 of the top 100 banks, and the 10 largest insurers all entrust core operations to Cobol programs running on IBM mainframes, says Deon Newman, vice president, IBM System z. Since 2010, around 50 to 75 customers have left the mainframe fold, IBM says, while some 270 of IBM's 3,500 mainframe customers have come aboard as new clients since then, Newman says.
IIRC, when Greg Lotko referenced these same statistics during his keynote address at SHARE in Boston, he mentioned that approximately 40% of those "new" customers were z/OS.
Having said that, my understanding is that this count of "new" customers includes customers that completely reversed previously confirmed, in-progress business plans to migrate off the mainframe. IMHO, it is completely fair to count them as "new" since their moribund 9672s running just a few hard-to-kill apps under OS/390 V2R4 have now been replaced with zEC12s running z/OS 2.1 and a renewed business focus to move work onto the platform.
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