has anybody tried replacing the fans in a Blade 2500 against variants
that are not so loud and possibly temperature controlled?
Any experiences concerning this?
TIA,
Thomas
I would have thought in a modern machine like that, there would be temperature control.
Generally, fans that make less noise produce less air. That said, sleve bearings are less noisy than ball bearings, but have a shorter life.
Many years ago I removed the fan from a SunPCi card having found it too noisy and coming to the conclusion the airflow in my Ultra 80 was such that the card did not need a fan. That card is still working to this day with no fan. But I'd be a bit reluctant to start changing them in a newish workstation.
Thomas Maier-Komor 21 January 2008 13:20:36 [ permanent link ]
Dave schrieb:
Thomas Maier-Komor wrote:
Hi,
has anybody tried replacing the fans in a Blade 2500 against variants
that are not so loud and possibly temperature controlled?
Any experiences concerning this?
TIA,
Thomas
I would have thought in a modern machine like that, there would be
temperature control.
Generally, fans that make less noise produce less air. That said, sleve
bearings are less noisy than ball bearings, but have a shorter life.
Many years ago I removed the fan from a SunPCi card having found it too
noisy and coming to the conclusion the airflow in my Ultra 80 was such
that the card did not need a fan. That card is still working to this day
with no fan. But I'd be a bit reluctant to start changing them in a
newish workstation.
the fans seem to be temperature controlled to a degree. At least when I turn on the workstation it is as loud as a jet taking off and after some seconds the noise reduces a lot. But it is still pretty noisy.
The problem is that this beast has about 7 fans (power supply, one each cpu, memory, chassis in, chassis out, disks). So it adds up quickly. If I put my hand at the outtake of the chassis, it feels really cool. So I guess it would be possible to reduce the airflow a little bit more and still be fine.
The machine isn't running full power all the time so I doubt this would be an issue. If there was some way to force the fans to a lower speed by software this would be great. But I haven't found anything where one could do this. One can query the temperature of some devices with prtpicl, so this could help finding an optimal fan setup...
Maybe it would be better, if one replaced the existing fans with high quality Papst fans or something the like. But I'm really not sure if this would help.
has anybody tried replacing the fans in a Blade 2500 against variants
that are not so loud and possibly temperature controlled?
Any experiences concerning this?
TIA,
Thomas
My experience with the SB2500 is to put it somewhere out of the way and use Sun Ray - pure silence results. I would agree that it is quite a noisy beast but I would not be without it.
DoN. Nichols 24 January 2008 09:36:48 [ permanent link ]
On 2008-01-23, Thomas Maier-Komor <thomas_no_spam@maier-komor.de> wrote:
Michael Laajanen schrieb:
[ ... ]
One fan that makes alot of noise is the fan to the disk, this fan works
to hard due to air resistance, try just by move the fan 10 mm from the
diskpack and you will hear a reduced noise!
This can be easy fixed without any problems by reducing the power to the
fan, I have installed a bunch(5-6) diods(each reduces 0.7V) in serie(put
the dash mark on the diod towards the disk and isolate with shrink
tubes) with the +12V supply to the fan, make a huge difference for a
minimum cost and work!
/michael
Yes, the disk fan is really noisy. I'll give it a try.
I would suggest monitoring the temperature in the disks both before and after the reduction in fan speed. Some disks have the ability to monitor their temperature built in -- as long as you have the right program to view that data.
Good Luck, DoN.
-- Email: <dnichols@d-and-d.com> | Voice (all times): (703) 938-4564 (too) near Washington D.C. | http://www.d-and-d.com/dnichols/DoN.html --- Black Holes are where God is dividing by zero ---
root@azalin:~$ /opt/csw/sbin/smartctl -a /dev/rdsk/c0t0d0s0 smartctl version 5.36 [sparc-sun-solaris2.8] Copyright (C) 2002-6 Bruce Allen Home page is http://smartmontools.sourceforge.net/
Device: ModusLnk Version: Serial number: Device type: disk Transport protocol: Parallel SCSI (SPI-4) Local Time is: Thu Jan 24 08:45:19 2008 CET Device supports SMART and is Enabled Temperature Warning Enabled SMART Health Status: OK
Current Drive Temperature: 29 C Drive Trip Temperature: 65 C Manufactured in week 00 of year 2000 Current start stop count: 267 times Recommended maximum start stop count: 10000 times Elements in grown defect list: 0
DoN. Nichols 25 January 2008 05:41:25 [ permanent link ]
On 2008-01-24, Thomas Maier-Komor <thomas_no_spam@maier-komor.de> wrote:
DoN. Nichols schrieb:
[ ... ]
I would suggest monitoring the temperature in the disks both
before and after the reduction in fan speed. Some disks have the
ability to monitor their temperature built in -- as long as you have the
right program to view that data.
[ ... ]
prtpicl -v is your friend:
:name sd
hard-disk0 (temperature-sensor, 770000091b)
:_fru_parent (7700000a1bH)
:ID 0
:Label hard-disk0
:HighShutdownThreshold 60
:HighWarningThreshold 55
:LowWarningThreshold 5
:LowShutdownThreshold 0
:Temperature 29
:devfs-path
/devices/pci@1d,700000/scsi@4/sd@0,0:a,raw
:_class temperature-sensor
:name hard-disk0
Not on my SB-1000, at least.
Alternatively, smartctl can do it, too:
root@azalin:~$ /opt/csw/sbin/smartctl -a /dev/rdsk/c0t0d0s0
Yes - that one works for me -- I had forgotten its name and where I had installed it. (In /usr/local/bin in my case.
Anyway -- use it to make sure that slowing the fan does not shorten the life of your drives.
Enjoy, DoN.
-- Email: <dnichols@d-and-d.com> | Voice (all times): (703) 938-4564 (too) near Washington D.C. | http://www.d-and-d.com/dnichols/DoN.html --- Black Holes are where God is dividing by zero ---
