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The standard controllers included on my ASUS Pro x370 board show you don't need a add-in controller. It's got 8 ports on the board, and when I do btrfs scrubs t
by zlynx 6y ago
The standard controllers included on my ASUS Pro x370 board show you don't need a add-in controller. It's got 8 ports on the board, and when I do btrfs scrubs the 6 HDDs get 760 MiB/s and the 2 SATA SSDs get 1.05 GiB/s.
The scrubs start at the same time each week so it's pretty obvious the SATA controllers on that motherboard can handle at least 2 GiB/s.
I've honestly never seen a motherboard with SATA-3 6 Gbps controllers so bad that they couldn't handle a full 500 MB/s on every port.
If there is a bottleneck it would be the connection to the board chipset from the CPU. Ryzen and its board support doesn't seem to have any problems here. Especially not if the board and CPU are able to use PCIe 4.0.
- AdrianB1 6y agoMy B450 board with Ryzen 2700 has only 4 usable SATA ports (if a M.2 drive is connected, the SATA ports 5 and 6 are disabled) and the 4 disk scrub in FreeNAS is fairly slow compared to the sum of the speed of each drive. Heavy FreeNAS users confirmed many times on the forum that the performance of a dedicated controller is visibly (not only benchmark measurable) better than the onboard SATA. I did not test, personally, just pointed to the FreeNAS forums.