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ASUS Z170 Boards - SATA hotplug support


#1

Hey there,

I am going to create a 2-bay mirror using ZFS on Linux. My motherboard’s SATA controller has hotplug support which might be benefitial in case I have to replace a drive in future. However, does enabling hotplug support introduce any performance disadvantage? Do I need to enable hotplug support at all when I take drives offline via command line?

The board is an ASUS Maximus VIII Gene (Z170 chipset).

Thanks in advance!


#2

Can you even disable the AHCI mode in UEFI anymore?
Hotplug is in the end just a feature set so it doesn’t give you any performance decrease/disadvantage.


#3

There is options for either AHCI or RAID based on Intel Rapid Storage Technology. However, the BIOS allows to enable/disable hotplug support for each port indivdually. I wonder why unless there is any downsides involved.


#4

That’s a neat feature.
There are now downsides I know of.


#5

There is no performance impact from having hotplug enabled.

Enjoy :smiley:


#6

Very good! Thanks everyone for clearing it up. :smiley: