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HBA card and low power C states

Unlisted9035
in Storage Devices and Controllers

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I'm having a bit of a power efficiency binge at the moment and I'm trying to get my unraid server to hit the highest C state that I can.

 

I've narrowed down one of the culprits to the HBA.

 

It's an HP H220 aka LSI 9207-8i / 2308 HBA flashed with the latest P20 firmware. I'm using it to control 4 x 6tb SAS drives.

 

Without the card plugged in the system can go straight to C8.

When the card is plugged in, the lowest power state it will get to is C2 (including w/ drives spun down).

 

So the question is: Is anybody out there running a PCIe HBA card and able to achieve a lower power C State than C2?

 

 

 

Edited by Unlisted9035

  • Quote

    Welcome!

     

    You might get a better response in this thread:

     

     

  • Quote
    • Author

    Thanks Lolight - Will try there too. 🙂

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