On 9 September 2015 at 09:47, Steve Harner <[email protected]> wrote: > I am interested in determining/clarifying what the current market share > breakdown is for EACH of the three > z/OS ESM products: RACF, CA-ACF2 and CA-Top Secret.
Only IBM is in a position to truly know the market share, because only they know exactly how many z/OS systems are out there. CA of course knows how many ACF2 and TSS shops there are, but IBM also knows that with almost perfect accuracy both because they know who is paying for z/OS but not RACF, and because they see dumps and logs and such from essentially every customer, which will also tell them. I doubt either IBM or CA is talking on these numbers, though. In the absense of their comments, I'd trust Barry's remarks. Based on the much smaller number of z/OS customers that I (as an ISV employee) see problem tickets from, I would guess the ratio to be roughly 80/10/10. Certainly neither ACF2 nor TSS is going away any time soon; both are good products that are kept current, and all three products offer unique features not available in the others. Because of the nature of our software, we have to explicitly support all three in code and doc, but I doubt that any would-be ISV or vendor of consulting services in the z/OS market can afford to not support any of them at least in install and use doc, even if the product uses only standard SAF services. As for conversions, clearly the trend is to RACF, but we've seen oddities like a large ACF2 customer that converted to RACF and was then almost immediately acquired by another company using ACF2, and converted back. I have yet to encounter a customer with all three products in the same datacentre, though I don't doubt that they exist as the result of M&A activity. Tony H. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
