>How many different DASD geometries are being encountered today under z/OS?
As inefficient as it may seem, IBM promised (a long time ago) that they would not change the geometry of disk. So, it comes down to two BLKSIZES: DASD & Tape. - Too busy driving to stop for gas! ---------------------------------------------------------------------- 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