I have to watch myself at times. I get caught up in technology from 25 years ago, when 20 mips was a lot(where I used to work) and 3380's were the norm. Obviously slow by today's standards. Steve
ps: and remember, tomorrow, Sept. 19, is Talk Like a Pirate day. -----Original Message----- From: The IBM z/VM Operating System [mailto:ib...@listserv.uark.edu] On Behalf Of Rob van der Heij Sent: Friday, September 18, 2009 8:49 AM To: IBMVM@LISTSERV.UARK.EDU Subject: Re: TDISK and SYSTEM CONFIG question. On Thu, Sep 17, 2009 at 10:18 PM, Gentry, Stephen <stephen.gen...@lafayettelife.com> wrote: > Just did a quick test on a test VM system. CLEAR_TDisk is enabled. With > a T-DISK size of 1300 cylinders, clearing/formatting it isn't noticed, > speed wise. Would have thought I would have gotten a message, during > IPL, that clearing was being done, but no big deal. > Steve How would you have noticed it? I don't think CP tells us when the clearing completes. I suppose if you set a user to loop trying to acquire the 1300 cylinders, you could measure how long it takes to format when the previous owner detached it. I bet it takes just as long as when you do it yourself. As Kris noticed, the formatting of cyl 0 (or track 0) when you get the device is not open for debate. It is probably just to prevent unaware users stepping on the wrong things. But I'm sure you will not notice a delay. Rob
