jwcolby
jwcolby at colbyconsulting.com
Sat Jul 17 23:01:36 CDT 2010
I bought the Norco 4020 to build a server with. http://www.newegg.com/Product/Product.aspx?Item=N82E16811219021&cm_re=4u_rackmount_case-_-11-219-021-_-Product I am impressed with the case, though it is consumer grade. It is tough to work with however. It has a fan wall just behind the disk drive cage which leaves exactly two inches between the fans and the disk backplanes. Obviously it is impossible to leave the wall in place and get all of the cables in, but removing the fan wall is a job for a safe cracker. None the less I did so, got 20 disks in and cabled up, then reinserted the fan wall, and then threaded the cables through the holes in the BOTTOM of the fan wall. Why on earth they didn't leave the holes on the top of the fan wall is beyond me but they didn't. Anyway, for the first time tonight I tested temps with all 20 drives inserted and power applied, and the fan wall operating. I ran a defrag on every volume simultaneously in order to cause the disks to work and generate as much heat as I could cause. Below are the temps. CPU Temperature 55 ºC Ctrl Temperature 49 ºC Power +12V 12.099 V Power +5V 5.053 V Power +3.3V 3.328 V SATA PHY +2.5V 2.528 V DDR-II +1.8V 1.872 V PCI-E +1.8V 1.872 V CPU +1.8V 1.856 V CPU +1.2V 1.232 V DDR-II +0.9V 0.928 V Hdd#1 Temperature 37 ºC Hdd#2 Temperature 40 ºC Hdd#3 Temperature 42 ºC Hdd#4 Temperature 39 ºC Hdd#5 Temperature 47 ºC Hdd#6 Temperature 51 ºC Hdd#7 Temperature 49 ºC Hdd#8 Temperature 46 ºC Hdd#9 Temperature 37 ºC Hdd#10 Temperature 49 ºC Hdd#11 Temperature 44 ºC Hdd#12 Temperature 47 ºC Hdd#13 Temperature 45 ºC Hdd#14 Temperature 50 ºC Hdd#15 Temperature 49 ºC Hdd#16 Temperature 42 ºC There are only 16 drives showing because these 16 are cabled up to my Areca raid co-processor card which is a 16 port card, and that card provides a utility to watch these numbers. The other disks are not being driven but do have power applied. I am satisfied with the temps. Several disks actually hit 53 degrees C under max stress but that is acceptable to me. I would like lower temps but I can live with these. BTW I am using the Corsair 750W modular PS which is a NICE PS. http://www.newegg.com/Product/Product.aspx?Item=N82E16817139010 The 12V cables are ribbon cables which makes them very easy to run and minimizes the air flow impedance. With only 2 inches to work with between the fans and disks, I need all the help I can get. -- John W. Colby www.ColbyConsulting.com