| Enhanced Support Facility 2.6 User's Guide |
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Contents
Index
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| Part 1 SCF Driver Features | > Chapter 1 Main Cabinet | > 1.3 Server Setup | > 1.3.2 Feature Settings |
For the following models, this section need not be referred to.
This system has two hardware clocks: a system standard clock and the SCF high-resolution clock that has a lower degree of error. This software makes it possible to use the SCF high-resolution clock to adjust the time of the system standard clock.
The default setting uses only the system standard clock, and does not adjust its time.
Selecting the SCF high-resolution clock will cause time to be periodically adjusted, allowing more accurate time operation. However, changing system time by date or a similar command only affects the system standard clock. You must use the scfdate(1M) command to synchronize the system standard clock and the SCF high-resolution clock. Do this by executing the following:
# scfdate sync |
Since system time can be changed by date(1) as well as stime(2), adjtime(2), and settimeofday(3C), you must exercise caution when using the SCF high-resolution clock. In particularly, do not use the SCF high-resolution clock when running NTP (Network Time Protocol) software that utilizes the network to synchronize time.
You can use the scfdate(1M) command to display the current time of the SCF high-resolution clock.
When the following models are used, the setting is unnecessary. However, when the system time is changed, it is necessary to synchronize SCF high-resolution clock by the scfdate(1M) command.
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Contents
Index
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