[rescue] "In My Way", 2015 Edition

Stephen Conley cheetah at tanabi.org
Tue Apr 7 17:47:51 CDT 2015

It's also possible to replace the fans with something quieter.


Note : I haven't used this particular company so I'm not advocating
for them, merely using them as an example.

I had some success with an E450 and noise reduction -- it wasn't my
specific goal, but I had a fan actually die on it and I replaced it
with a quiet fan and did notice a significant difference.


On Tue, Apr 7, 2015 at 6:18 PM, Patrick Giagnocavo <xemacs5 at gmail.com> wrote:
> Some of these servers, with their multiple fans, have a "beat" or "ringin"
> sound, as the fans don't spin at precisely the same speed.  So you have a
> periodic louder tone as all the fans make noise in synchronicity, which
> then subsides as they move out of phase; then grows louder again.
> On Tue, Apr 7, 2015 at 3:30 PM, Carl R. Friend <crfriend at rcn.com> wrote:
>>    On Tue, 7 Apr 2015, Lionel Peterson wrote:
>>  The V240 is rated at 'under' 7.1 bels -
>>> http://www.andovercg.com/datasheets/sun-fire-v240-server.pdf
>>    I believe that normal human conversation takes place at around
>> 68 decibels (6.8 b), so being close to a V240/245 would make polite
>> conversation difficult.  There's also the character of the noise;
>> most of it comes from either 2 or 4 10,000 RPM mini-fans attached
>> to the CPU heat-sinks (if you have one CPU you have two of the
>> dratted things; 2 CPUs, 4 fans).  The noise footprint adds up fast.
>>    If you get one, stock up on the heat-sink fans; they do not have
>> a long service life, and you'll fry the CPUs if both die at the same
>> time and the thing doesn't power off.
>>    They're delightful machines in a commercial setting, but would be
>> rather too loud in a residential setting.  I also believe they're FCC
>> Class-A equipment, not that that matters much to the crowd here.  I'd
>> like a couple here for occasional use, but blanch at the thought of
>> sharing my study with them.
>>    Cheers!
>> +------------------------------------------------+---------------------+
>> | Carl Richard Friend (UNIX Sysadmin)            | West Boylston       |
>> | Minicomputer Collector / Enthusiast            | Massachusetts, USA  |
>> | mailto:crfriend at rcn.com                        +---------------------+
>> | http://users.rcn.com/crfriend/museum           | ICBM: 42:22N 71:47W |
>> +------------------------------------------------+---------------------+
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