> -----Original Message----- > From: IBM Mainframe Discussion List > [mailto:[EMAIL PROTECTED] On Behalf Of Clark Morris > Sent: Monday, May 19, 2008 2:44 PM > To: IBM-MAIN@BAMA.UA.EDU > Subject: Re: SMP/E question. > > > Again, we get the band-aid instead of the step forward. Instead of > making FBA available to z/OS and coming up with the needed > enhancements to PDSE, ESDS and initialization code, the space and CPU > cycle wasting CKD is carried forward. It is an architecture that is > FBA file hostile (look at the space wasted per track for PDSE, VSAM > and any other file system that is at least somewhat page oriented). > > Clark Morris
I agree. Even if the DFP architects cannot totally eliminate ECKD for some things, all the "VSAM"-like access methods including all types of VSAM datasets (KSDS, ESDS, LINEAR, RRDS, and VRRDS), PDS-Es, HFS, zFS (which is LINEAR VSAM), could all reside on FCP connected "Open" DASD. This would allow for the majority of z/OS data to reside on "Open" DASD with only the small amount of actual PDSes (like NUCLEUS) and maybe sequential being forced to be on ECKD. And I would think/hope that sequential could be on "Open" DASD if by no other way than being able to "emulate" sequential on an ESDS VSAM with some sort of "interface" to allow access via DCB instead of ACB. z/VSE does it. If the current DFP people can't, maybe they could get some pointers from the z/VSE systems people. I'm still a bit put out that sequential et al. has never gotten an ACB interface. If they did that, then 31 bit AMODE and RMODE would be a snap. I know, I know, don't bitch here, bitch at IBM. -- John McKown Senior Systems Programmer HealthMarkets Keeping the Promise of Affordable Coverage Administrative Services Group Information Technology The information contained in this e-mail message may be privileged and/or confidential. It is for intended addressee(s) only. If you are not the intended recipient, you are hereby notified that any disclosure, reproduction, distribution or other use of this communication is strictly prohibited and could, in certain circumstances, be a criminal offense. If you have received this e-mail in error, please notify the sender by reply and delete this message without copying or disclosing it. ---------------------------------------------------------------------- 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
