Hollander_1908

Hey guys, Upon investigating further on the same evening I started this topic, I reconfigured the disk connections and discovered that two out of the six SATA ports on my motherboard were completely non-functional. It appears that this was probably the reason why I initially arranged the disk connections in a certain way. Unfortunately, due to the malfunctioning of these two ports, I was limited in terms of reconfiguring the setup. To address this issue, I proceeded to order an M.2 to SATA adapter equipped with an ASM1166 chip, providing functionality for six SATA ports. I received this tiny piece of equipment yesterday and promptly connected the drives to it. I am pleased to report that I am now achieving the desired speed of 200MB/s, effectively resolving the problem I was experiencing. I would like to express my gratitude for all the suggestions provided by the community. Your insights were instrumental in identifying and troubleshooting the problem. Cheers!

Not entirely certain, but could this potentially impact the speed of the parity check too? Otherwise, I might start by changing the ports first.

I had already taken note of this setting and ensured that it was configured correctly. I can confirm that it is indeed set up as needed. Thanks anyway, appreciate it!

I installed the 'DiskSpeed' Docker and conducted some tests. Interestingly, individual speeds reached around 200MB/s. It appears that the issue highlighted by @JorgeB might indeed be the key to optimizing the performance. Thanks for suggesting the docker – it seems to be a valuable tool. See screenshot of the tests on all my HDD drives for more details.

I honestly didn't know it had a multiplier. I have 10x 12TB HDD and 2x 1TB SSD. Now that you mention it, I'll be optimizing my setup by connecting 6 HDDs to the motherboard, using 4 HDDs on the RAID controller, and attaching 2 SSDs to the multiplier. The SSDs on the multiplier are chosen because of their higher write speeds, and both are serving as a cache in a single pool anyway. I will make the changes tonight, run some tests, and provide feedback on the impact on speed and overall performance. Thanks!

Hello everyone, I've been experiencing consistently low parity check speeds for a while now, and although it's not extremely slow (around 50MB/s), I've recently noticed that some of my friends are achieving speeds around 200MB/s. Naturally, I'd like to optimize my setup to match these higher speeds. I'm unsure about the factors causing the slower speeds on my end, which is why I've created this post. I've attached the diagnostics for your reference. If you need any additional information, please don't hesitate to ask! Thanks in advance! diagnostics-20231212-1545.zip