On Fri, Jan 08, 2016 at 03:28:01AM +1100, Russell Coker wrote: > On Thu, 7 Jan 2016 04:18:31 PM Craig Sanders via luv-main wrote: > > (alternatively, some of the fans in the servers **may** be > > replaceable with quiet fans - many available from Quiet PC) > > 1RU systems have small diameter fans which have to spin at high speeds > to get enough air flow which is always going to make more noise than > the larger fans in 2RU servers or tower systems.
umm, yes....but it's not hard to find 40 or 60mm fans that are MUCH quieter and better quality than the ones that come as standard in servers, without sacrificing airflow. it's not even hard to find small fans that are quieter, better quality, and move more air than the standard supplied fans. as Rick said, server manufacturers typically don't bother optimising for low fan noise because most customers don't care - the servers will be going into a noisy server room anyway. e.g. i just ordered a few "Scythe 40mm Mini Kaze Silent Fan (20mm Deep)" for $12.73 each from umart. http://www.umart.com.au/umart1/pro/Products-details.phtml?id=10&id2=229&bid=2&sid=90817 4.11 CFM (7 m3/hour) @ 14dbA (3500 rpm) They also have some Noctua fans that run at 4500 rpm that move 8.2 m3/hour at 17.9dbA, price $23 and $29 there are numerous other options available if you google for "quiet PC fans 40mm". > As for the Sun servers I'm offering. They are old and somewhat slow > by today's standards. If they can work for someone as they currently > are then that's great. If they need to have anything done with them > then it's probably not worth it. yep, sure....and whoever takes them off your hands may be interested in getting them to run quieter and cooler, with fans that don't wear out quickly because they have crappy sleeve bearings. personally, i'd just build my own server with commodity PC hardware in a rack-mount case (and replace the fans, of course). craig -- craig sanders <[email protected]> _______________________________________________ luv-main mailing list [email protected] http://lists.luv.asn.au/listinfo/luv-main
