z/OS gets it time from TOD. The TOD gets it time from either an operator or a sysplex timer.
A sysplex timer can be sync'ed with an external time referece, but that is using "special hardware" (a modem dialing out) and not SNTPD server on the internet. On Wed, 15 Jun 2005 14:39:27 -0400, Jim Blalock <[EMAIL PROTECTED]> wrote: >Hi folks, > >I have been asked to look into some sort of automated way to sync a z/OS >clock from Internet time servers. Syncing either local time (offset) or >the TOD clock (GMT) will be adequate. We are z/OS 1.4, single image, no >sysplex timer. > >I spent some time looking into the SNTPD daemon that came out with z/OS >1.4. SNTPD only supports being a stratum 1 server (where stratum 0 is a >time reference like an atomic clock or a sysplex timer). Nowhere does the >(scant) doc say that SNTPD syncs the z/OS clock: it sounds like IBM >assumes you have a big studly 'plex and the sysplex timer support takes >care of your clock for you. So, this version of SNTPD looks like a dead end. > >If I were asked to write one of these, I know how I'd try to do it; it >should be easy. There are tons of little freebie time syncers available >for Windows; surely there's something for big computers too? > >-- Jim Blalock > z/OS Support, Clemson University > (864) 656-3680 > [EMAIL PROTECTED] ---------------------------------------------------------------------- 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
