"Edward E. Jaffe" <[EMAIL PROTECTED]> wrote in message news:<[EMAIL PROTECTED]>... > Farley, Peter x23353 wrote: > > >PMFJI here, but isn't NIST time available via NTP to the microsecond or > >better? ISTR they use an atomic clock to synchronize NIST, and the accuracy > >is quite high (or so I was led to believe). > > > > > > z/OS systems in a sysplex must have synchronized TOD clocks. My > understanding was that the precision of NTP was insufficient for this > purpose I'm certainly no expert in this area, so I'll defer to IBM to > explain the intricacies of STP when the time comes. > > --
AS I understand it, the requirement was that the TOD clocks were well synchronized to eachother, not necessarily to some external time. The TOD clocks in one machine were synchronized by architecture, synchronizing TOD clocks in different boxes requires a local device, the sysplex timer. It has a feature, optional and not required, to synchronize the TOD clocks under its control to an exteral time source. Kees. ********************************************************************** For information, services and offers, please visit our web site: http://www.klm.com. This e-mail and any attachment may contain confidential and privileged material intended for the addressee only. If you are not the addressee, you are notified that no part of the e-mail or any attachment may be disclosed, copied or distributed, and that any other action related to this e-mail or attachment is strictly prohibited, and may be unlawful. If you have received this e-mail by error, please notify the sender immediately by return e-mail, and delete this message. Koninklijke Luchtvaart Maatschappij NV (KLM), its subsidiaries and/or its employees shall not be liable for the incorrect or incomplete transmission of this e-mail or any attachments, nor responsible for any delay in receipt. ********************************************************************** ---------------------------------------------------------------------- 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
