Tim Hare said > I would venture that PDS-Es use (Media Manager?) sophisticated channel > programs which move several 4K pages at a time into the buffers, so I > think the total buffer space perhaps matters more than the buffer (in this > case also the block-) size.
And you'd be right! PDSE is built on top of media manager and it does do exotic things with I/O. So you get the cigar. However I have no idea whether and how (if at all) the user specified buffer space comes into play. My WAG is that whatever happens is entirely buried in the MM code. As others have noted, the PDSE code materializes whatever dataset (blocking) attributes you specify but the internal view is one of 4KB blocks. CC ---------------------------------------------------------------------- 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
