PMFJI here, but the facts that Media Manager underlies these "new" (FSVO "new") file technologies and that Media Manager is page-oriented in its use of disk storage *could* be taken as a sign (however faint and clouded) that IBM is (ver-r-ry slowly) moving towards direct support of FBA in z/OS, perhaps only for those file types supported by MM, perhaps eventually for all file types.
Maybe one day a z/OS successor will IPL from the /boot file system? Wild and rampant speculation with just two chances of being right (slim and none, and slim is out to lunch), but interesting thoughts nonetheless. Peter > -----Original Message----- > From: IBM Mainframe Discussion List > [mailto:[email protected]] On Behalf Of Clark Morris > Sent: Friday, February 12, 2010 8:35 AM > To: [email protected] > Subject: Re: PDS vs. PDSE <Snipped> > And all of the above is more painfully true because space is wasted by > emulating CKD on FBA underneath the covers. IBM "saved" 26 million by > not implementing FBA in MVS when the other IBM operating systems could > handle it. IBM consistently made FBA data sets (VSAM, HFS, zFS, PDSE, > Linear, Page) wasters of space in a CKD environment. The "savings" > has long since been overshadowed by the complexity of maintaining CKD > in an environment where it is irrelevant instead of moving on. The > lack of strategic thinking strikes again. This message and any attachments are intended only for the use of the addressee and may contain information that is privileged and confidential. If the reader of the message is not the intended recipient or an authorized representative of the intended recipient, you are hereby notified that any dissemination of this communication is strictly prohibited. If you have received this communication in error, please notify us immediately by e-mail and delete the message and any attachments from your system. ---------------------------------------------------------------------- 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
