IBM Z Time Synchronization Implementation Guide
Bill White · Donald Crabtree · Gatto Gobehi · Steve Guendet · Clay Kaiser · Octavian Lascu · IBM Redbooks
Aug 2026 · IBM Redbooks
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About this ebook
The IBM Z time synchronization solution uses two technologies to ensure precise, consistent, and resilient timekeeping across IBM Z systems; Server Time Protocol (STP) and External Time Sources (ETS). STP is a server-wide facility that is implemented in the Licensed Internal Code (LIC) of the IBM Z® platform. It provides improved time synchronization in a sysplex or non-sysplex configuration. ETS on IBM Z supports standard protocols like Network Time Protocol (NTP), Precision Time Protocol (PTP), and Pulse Per Second (PPS) to keep accurate universal time.
This IBM Redbooks® publication is intended for infrastructure architects and system programmers who need to understand the STP and ETS functions. Readers are expected to be familiar with IBM Z technology and terminology.
This book provides planning and implementation information for STP and ETS functions and associated software support for the IBM z17TM, IBM z16®, and IBM z15® platforms.
The IBM Z time synchronization solution uses two technologies to ensure precise, consistent, and resilient timekeeping across IBM Z systems; Server Time Protocol (STP) and External Time Sources (ETS). STP is a server-wide facility that is implemented in the Licensed Internal Code (LIC) of the IBM...
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39 reviews
SIRAJUL MALLICK
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September 27, 2026
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A Google user
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January 9, 2026
my favourite
Laura k Brown
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January 2, 2026
excellent
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