[ntp:questions] NTP/Linux Machine Issue

Richard B. Gilbert rgilbert88 at comcast.net
Wed Apr 27 19:19:23 UTC 2011

On 4/27/2011 11:14 AM, Chris Albertson wrote:
> others will chime in that you need more than two, and in
>>  the end you will need 9 servers or so.
>>  But this is of course hogwash.  You define what you need.  When you
>>  have one server and it is taken offline, the clients clocks will continue
>>  to run just fine and even quite accurate, as they will continue to apply
>>  the same clock corrections they needed to keep synced to the server.
>>  Many users are not that paranoid about their system time being off by a
>>  millisecond, and having one quite reliable server is just fine.
>>  Of course you monitor the server in your usual monitoring system and
>>  repair it when it is down.

And some have legal requirements for time stamping transactions; e.g. 
transactions on a stock exchange.

One of the more common reasons for keeping clocks in synchronization is 
to aid in analysis of log files of multiple systems.

Some people are happy if the date is correct and couldn't care less 
about hours, minutes, or seconds!


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