[ntp:questions] Using two NTP Server: Bad?
hal-usenet at ip-64-139-1-69.sjc.megapath.net
Mon Apr 25 21:39:14 UTC 2011
In article <slrnir4ti8.j3t.unruh at wormhole.physics.ubc.ca>,
unruh <unruh at wormhole.physics.ubc.ca> writes:
>On 2011-04-23, Hal Murray <hal-usenet at ip-64-139-1-69.sjc.megapath.net> wrote:
>> All it takes is a firmware bug and to have several NTP servers
>> using the same GPS device with the bug.
>What good will having more servers do then? If the probablility of 4 bad
>ones is that high, the probability of 5 out of 9 is also high, and 6 out
>of 11. Ie, in that case you are basically screwed. Of course everyone
>could just use the national time standards servers-- they are not liable
>to be wrong (maybe just overloaded).
All I was trying to do is point out that the discussion of how many
servers to use gets (much) more complicated if you consider what happens
if some of them get the wrong time due to a software bug that is likely
to hit all the servers running that software/firmware.
These are my opinions, not necessarily my employer's. I hate spam.
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