X64 hardware, as much as it has improved, is still not as reliable or have the I/O capacity of the z hardware. E.g.: We had a TCM fail once. A spare picked up the work, automatically restarting the instruction stream, with no outage of any sort and no software involvement. X86, from what I'm told, would at least require the OS to do the equivalent of a checkpoint restart. Also had an OSA fail. The other OSA did an ARP takeover and no IP sessions were lost. TCPIP was informed, but all it did was put out a message and not start any new sessions on the failing OSA. Our "open" people called me a liar when I told them that.
-- John McKown Systems Engineer IV IT Administrative Services Group HealthMarkets® 9151 Boulevard 26 • N. Richland Hills • TX 76010 (817) 255-3225 phone • [email protected] • www.HealthMarkets.com Confidentiality Notice: This e-mail message may contain confidential or proprietary information. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message. HealthMarkets® is the brand name for products underwritten and issued by the insurance subsidiaries of HealthMarkets, Inc. –The Chesapeake Life Insurance Company®, Mid-West National Life Insurance Company of TennesseeSM and The MEGA Life and Health Insurance Company.SM > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:[email protected]] > On Behalf Of Paul Gilmartin > Sent: Wednesday, August 22, 2012 6:00 PM > To: [email protected] > Subject: Re: X86 server > > Which costs less? > > On Wed, 22 Aug 2012 13:40:01 -0700, Edward Jaffe wrote: > > >On 8/13/2012 10:01 PM, Jake anderson wrote: > >> Does IBM provides support running Z/OS on X86 ? > > > >Yes, with its RD&T offering: > >http://www.ibm.com/software/rational/products/devtest/systemz/ > > > What's IBM's economic rationale here? If it's cheaper for them to > make z/OS available on X86, then much that I read in this forum > about the economic advantages of zSeries is untrue, and IBM's > motive for not licensing z/OS for X86 is simply to compel customers > to buy the more expensive hardware from IBM. > > -- gil > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
