>>> On Thu, Jan 17, 2008 at 11:26 AM, in message <[EMAIL PROTECTED]>, Clark Morris <[EMAIL PROTECTED]> wrote: -snip- > 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.
You're conflating several distinct layers here and making things seem more difficult than they really are. FBA is what the media is. How that media is "formatted," that is, how many bytes per sector, what kind of data structures are used to keep track of where all the pieces of a file are, what metadata about them is kept (date modified, owner, etc.) can be thought of as the "file system." What kind of data gets put into that file system, such as PDSes, spool space, etc., is entirely up to the operating systems/applications writing them. Just because UNIX/Linux/VM etc. don't have a PDS dataset type doesn't mean it can't exist on FBA devices. It just means that the underlying hardware and the access methods the OS uses to read and write data on it has to change. Mark Post ---------------------------------------------------------------------- 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
