On 17 Jan 2008 06:49:09 -0800, in bit.listserv.ibm-main you wrote: >> -----Original Message----- >> From: IBM Mainframe Discussion List On Behalf Of McKown, John >> >> Only z/OS is stuck on ECKD formatted DASD. z/VM and z/VSE can >> both run on FBA. z/LINUX can run on FBA and/or on SAN/SCSI >> DASD. I think that the latest z/VM can also run on SAN/SCSI >> connected DASD as well. z/OS remains the hold out. For >> whatever reason that may be. > >Weaning z/OS from (E)CKD would likely be such a monumental change as to >require that it be done at a version boundary and provide perhaps an >entire version life-cycle to complete.
There obviously would have to be a co-existence period where both architectures are supported. VSAM is already FBA as are all of the newer data architectures. The challenges will be spool, providing GDG like capability to the VSAM ESDS, moving PDSE read access to the Nucleus and deciding how to provide the current SYS1.NUCLEUS capability. Maybe the MVS people should humble themselves and talk to the VM and VSE people to find out how they solved the problem. > >"Who knows" how much non-IBM code would have to be revisited during the >transition? More than a few CBT utilities would be relegated to the >dustbin of history. > >It's probably also true that the longer such a transition is delayed, >the less likely it is to be attempted. > > -jc- > ---------------------------------------------------------------------- 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
