8480ch03.fm Draft Document for Review January 6, 2020 11:24 pm Figure 3-25 Three server CTN - final configuration 3.3 Managing the time 3.3.1 STP time adjustment This section discusses the following time modifications within a CTN and the operational  requirements: Without regular adjustment, the time on the Current Time Server drifts from its initial setting  because of the frequency drift of the oscillator used to step the TOD clock. This might not  meet time accuracy requirements. Therefore, adjustments might need to be made on a  regular basis. This can be done manually or by referencing an external time source. Manual Adjustments of time can be performed by clicking Adjust time from the "Current time  details" Panel (over the graphical topology view) in the Manage System Time task, as shown  in Figure 3-26 on page 80. GLYPH<SM590000> STP time adjustment GLYPH<SM590000> STP offset adjustments GLYPH<SM590000> Changes in local time GLYPH<SM590000> Logical partition time offset GLYPH<SM590000> Parallel Sysplex and multiple time zones Chapter 3. Configuration and operations  79