Hello,
My setup in idle (standby for disks) is using:
Pi 5 - 3.6W (wifi + bt disabled, 1 SSD connected via USB as system disk)
HAT - 2.6W
4 * 2.5 HDD standby (not spinning) - 2.6W
Total is 8.8W, which for long-term usage (months/years) is not optimal (e.g. laptops can idle with ~3W usage).
Thanks,
p
What power consumption do You expect?
You may get something by replacing HDDs to SSDs, they are faster and some of them need less power (still depending on model and its features).
Hi, thanks for response.
Pi’s 5 idle wattage is known to be around 3W.
Standby power per disk (2.6/4 = 0.65W) seems also totally fine.
However, the 2.6W for the HAT seems to be a bit excessive in idle. Therefore I am asking about official numbers or any options to keep it lower when no I/O is done.
My case is NAS, idle 95% time. Couple of Watts lower makes a difference.
Thanks,
p
Also - I am using HAT version 1.3 2020/08/28. I was not able to find info if there are any other revisions, maybe updated versions.
Much simpler m.2 card with same chip (JMB585) uses 2W so 0.6W seems to be fine for whole power management. Bit better are cards based on ASM1166 and it’s firmware can support ASPM.
as far as i remember RTC clock was added and one of power socket changed,
Info about ASPM support was the key here. Did not know that, thank you for your help.