The question was more to the details of how (full track read vs. individual records; single track vs. all tracks of a cylinder in one channel program, etc.) instead of what.
In my case, 3339 is not even a consideration. The minimum size that I will be copying is 7060 cylinders; the maximum, 32K. Regards, Richard Schuh ________________________________ From: The IBM z/VM Operating System [mailto:ib...@listserv.uark.edu] On Behalf Of Mario Izaguirre Sent: Tuesday, March 16, 2010 10:34 AM To: IBMVM@LISTSERV.UARK.EDU Subject: Re: DDR If the disk is a Minidisk copy from 1 to 3339 cyls. De: The IBM z/VM Operating System [mailto:ib...@listserv.uark.edu] En nombre de Schuh, Richard Enviado el: martes, 16 de marzo de 2010 18:07 Para: IBMVM@LISTSERV.UARK.EDU Asunto: DDR When DDR copies one disk to another, a COPY ALL operation, does it do full track reads and writes, copy an entire cylinder in a single I/O, or what? Regards, Richard Schuh
