I built a NAS with the following specs . The power consumption is about 100 to 102W idle according to my kill-a-watt.
I am wondering if there is anything I can do in order to reduce the idle power consumption.
Z170 chipset . Asus Z170-AR motherboard
Skylake 6600k CPU running at 4.4 GHz
NH-D14 cooler (dual fan)
Cooler Master HAF-XM case, with 4x200mm fans and 1x140mm fan
Raidmax 1200 PSU
32GB DDR4-3000 Patriot RAM, at 2400 MHz (unreliable beyond 2400 unfortunately!)
1 x Kingston 96GB SSD (SATA II) mounted to the back of the motherboard for the OS
5 x WD 10TB easystore, shucked in December
1 x LSI 9207-8i PCI-e 3.0 x8
1 x LSI 9207-4i4e PCI-e 3.0 x8
1 x Aquantia AQN-107 10 Gbe NIC PCI-e 3.0 x4, running at x2 but still manages 10 Gbe in iperf
I am running Ubuntu 18.04 with ZFS on Linux . Primarily application right now is sharing the RAIDZ2 volume via Samba. The hard drives never spin down.
100W may not seem much to some, but it's 876 kWh per year. My marginal kWh cost is about 40 cents, so that's $350/year.
I do have the suspend feature working, as well as WOL. But was wondering if there was any way to optimize the power consumption some more.
1) any BIOS settings that might help, like ASPM . And if so, can anyone using Asus motherboards chime in ?
2) any way to get the drives to spin down other than suspending the whole machine ? When no samba client is connected, I don't see why there should be disk activity on the volume, but there still is.
3) any way to get suspend to work automatically rather than just manually ? I have tried to play with Ubuntu power management settings, but the machine never suspends on its own
4) any other way to get it to consume less ? The 6600k is a 95W TDP CPU . Would a lower-power CPU consume less at idle ? Less RAM ? Fewer fans ? I can't really tell where each of the 102W is going, so not quite sure what direction to go.
I am wondering if there is anything I can do in order to reduce the idle power consumption.
Z170 chipset . Asus Z170-AR motherboard
Skylake 6600k CPU running at 4.4 GHz
NH-D14 cooler (dual fan)
Cooler Master HAF-XM case, with 4x200mm fans and 1x140mm fan
Raidmax 1200 PSU
32GB DDR4-3000 Patriot RAM, at 2400 MHz (unreliable beyond 2400 unfortunately!)
1 x Kingston 96GB SSD (SATA II) mounted to the back of the motherboard for the OS
5 x WD 10TB easystore, shucked in December
1 x LSI 9207-8i PCI-e 3.0 x8
1 x LSI 9207-4i4e PCI-e 3.0 x8
1 x Aquantia AQN-107 10 Gbe NIC PCI-e 3.0 x4, running at x2 but still manages 10 Gbe in iperf
I am running Ubuntu 18.04 with ZFS on Linux . Primarily application right now is sharing the RAIDZ2 volume via Samba. The hard drives never spin down.
100W may not seem much to some, but it's 876 kWh per year. My marginal kWh cost is about 40 cents, so that's $350/year.
I do have the suspend feature working, as well as WOL. But was wondering if there was any way to optimize the power consumption some more.
1) any BIOS settings that might help, like ASPM . And if so, can anyone using Asus motherboards chime in ?
2) any way to get the drives to spin down other than suspending the whole machine ? When no samba client is connected, I don't see why there should be disk activity on the volume, but there still is.
3) any way to get suspend to work automatically rather than just manually ? I have tried to play with Ubuntu power management settings, but the machine never suspends on its own
4) any other way to get it to consume less ? The 6600k is a 95W TDP CPU . Would a lower-power CPU consume less at idle ? Less RAM ? Fewer fans ? I can't really tell where each of the 102W is going, so not quite sure what direction to go.