And when was the last time you used non-3390 geometry? The device independence was important back in the early days of VSAM, circa 1975 when you had 3330s, 3350, 3340s on the floor, which were then followed by 3380s and 3390s. Assuming that 3390 geometry is here to stay at least from a logical Zos perspective, I don't see any downside to using Tracks or Cyls. But then I'm sure someone will disagree.
________________________________ From: Gilbert Cardenas [mailto:[EMAIL PROTECTED] Sent: Wed 4/16/2008 2:00 PM To: [email protected] Subject: Re: SMS allocation in Cylinders using AMS On Wed, 16 Apr 2008 13:52:52 -0400, O'Brien, David W. (NIH/CIT) [C] <[EMAIL PROTECTED]> wrote: >snip< >Where in the manual did it tell you not to use Cyls? I've been using Cyls or Tracks for years with no problem. > I was looking at the Access Method Services for Catalogs Chapter 14 page 142. To maintain device independence, do not use the TRACKS or CYLINDERS parameters... Regards, Gil. ---------------------------------------------------------------------- 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 ---------------------------------------------------------------------- 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
