- Joined
- May 28, 2011
- Messages
- 875
Hi guys,
I'm in the market for a new PSU, so I got a hold of a Kill-a-Watt meter and hooked my filer up to it to see what sort of power it really draws.
My filer consists of the following parts:
Supermicro X9SCL-F
Intel i3-2100
16GB DDR3-1333 ECC
8 x Samsung F3 HD103SJ 7200RPM Drives
IBM BR10i SAS Controller (LSI 1068 chip)
Intel "PT" Quad-Port Gig-E NIC
Plugged in but not powered on the system draws ~7.7 watts (so *always* unplug your system if you are going to go poke around inside!)
Power on the system and the power draw spikes to ~220 watts as the BIOS is loading & the drives are spun up.
Once FreeNAS starts booting & powerd is loaded the draw settles down to ~130 watts.
After FreeNAS is done loading & the system is idle it draws ~109 watts.
Running "iozone -a -s 20g -r 4096" on one of my datasets will increase the power draw up to ~145 watts.
Based on these numbers it appears that even a 350 watt PSU would provide me with plenty of headroom when I start the box but not be so much overkill that I'm way out of the efficiency "sweet spot".
-Will
I'm in the market for a new PSU, so I got a hold of a Kill-a-Watt meter and hooked my filer up to it to see what sort of power it really draws.
My filer consists of the following parts:
Supermicro X9SCL-F
Intel i3-2100
16GB DDR3-1333 ECC
8 x Samsung F3 HD103SJ 7200RPM Drives
IBM BR10i SAS Controller (LSI 1068 chip)
Intel "PT" Quad-Port Gig-E NIC
Plugged in but not powered on the system draws ~7.7 watts (so *always* unplug your system if you are going to go poke around inside!)
Power on the system and the power draw spikes to ~220 watts as the BIOS is loading & the drives are spun up.
Once FreeNAS starts booting & powerd is loaded the draw settles down to ~130 watts.
After FreeNAS is done loading & the system is idle it draws ~109 watts.
Running "iozone -a -s 20g -r 4096" on one of my datasets will increase the power draw up to ~145 watts.
Based on these numbers it appears that even a 350 watt PSU would provide me with plenty of headroom when I start the box but not be so much overkill that I'm way out of the efficiency "sweet spot".
-Will