Raptor Computing Systems Community Forums (BETA)
Third Party Hardware => General Discussion => Topic started by: jas on July 29, 2022, 02:27:56 pm
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Hi. I have a Talos II Lite with HighPoint SSD7505 with Samsung 980 PRO and Kingston KC3000 drives in it. Everything works fine, and I'm using Linux md-raid which isn't really optimal for SSD/NVMe devices. Has anyone managed to configure the SSD7505 device for RAID from a ppc machine? Or do I have to move the SSD7505 to a x86 platform, run the proprietary HighPoint stuff (which I haven't even tried yet) to configure it, and then move it back? I'm reluctant to do that unless I can find a good guide that is tailored towards Debian/Ubuntu/Fedora users with the device.
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I have a HighPoint SSD7580A and the same issue. I'm running the drives without RAID for the time being, but was also planning on using Linux on an x86 to configure the card.
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Slightly off topic:
What is your reasoning behind "mdraid is not optimal for SSD/NVMe devices"?
In my experience the exact opposite is the case: hardware RAIDs are inflexible, often require proprietary tools (as is the case with the HighPoint adapters) and can't be fixed without the device/propr. driver/tools . If there's an issue with an mdraid I can fix it with any other computer and with tools I have ready on any other computer.
In our data center HBAs with mdraid are the gold standard if a RAID is required.
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I bought a HighPoint SSD 7502 adapter for my Talos II and I am unhappy with it. With only one CPU, it's a misunderstanding. I knew I was going to have RAID problems and was mainly concerned with accessing two SSDs. Unfortunately this adapter takes up a long PCI slot and I can't use it together with a video card.
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You could try a Riser Cable, like this
https://www.coolermaster.com/catalog/cases/accessories/universal-vertical-gpu-holder-kit-v2-pcie-40/
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Slightly off topic:
What is your reasoning behind "mdraid is not optimal for SSD/NVMe devices"?
In my experience the exact opposite is the case: hardware RAIDs are inflexible, often require proprietary tools (as is the case with the HighPoint adapters) and can't be fixed without the device/propr. driver/tools . If there's an issue with an mdraid I can fix it with any other computer and with tools I have ready on any other computer.
NVMEs generate more heat (and draw more power) when writing compared to spinning disks, and mdraid can cause quite a lot of write activity (rebuilds) that could be optimized a bit by reading&comparing before doing a write.
Otherwise and in general I agree with you, and I'm now running mdraid on the NVMe SSDs on these devices so we'll see how it works.
/Simon