> -----Original Message----- > From: IBM Mainframe Discussion List > [mailto:[email protected]] On Behalf Of Charles Mills > Sent: Wednesday, August 11, 2010 11:50 AM > To: [email protected] > Subject: Re: Oracle: The future is diskless! > > > Why SW changes? Won't the control units continue to provide a > > 56kB/track 15 track/cylinder image? > > I think perhaps a gradual shift in software architectural > thinking relative > to "what goes on disk" versus "what goes in RAM" as the two become > increasingly synonymous. > > Charles
AS/400, aka iSeries, aka "i" uses the concept of a "single level store". Everything seems to be in memory. Everything has a virtual address. This is mapped onto the actual physical DASD. And it is "object oriented" in that everything, including what we think of as getmain'ed storage, is described by an object. And you have the virtual address of that "object". You can only do to that object what is allowed by the object. And, in most cases, a virtual address is never reused, so you cannot get some "old" object. A very interesting system. -- John McKown Systems Engineer IV IT Administrative Services Group HealthMarkets(r) 9151 Boulevard 26 * N. Richland Hills * TX 76010 (817) 255-3225 phone * (817)-691-6183 cell [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(r) is the brand name for products underwritten and issued by the insurance subsidiaries of HealthMarkets, Inc. -The Chesapeake Life Insurance Company(r), Mid-West National Life Insurance Company of TennesseeSM and The MEGA Life and Health Insurance Company.SM ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
