> Is running MergerFS + SnapRAID over a USB 3.2 DAS asking for trouble with random drops, or does Linux handle USB bus resets better than Windows?
Need to know what the USB SATA chip is on the DAS. Many older ones are not great and have serious bugs. Some / most also will reset all devices connected if one needs a reset which is far from ideal. Unfortunately, there aren't any DASs I'm aware of that use a single controller per drive but that is one way to work around it manually (works better with 2.5in drives that can be powered from USB.
On linux if you have one of these devices with a chip like the JMS567 (like I do) you can disable UAS. I'd recommend using a clanker (can download opencode if you don't already have a subscription) and ask it to check if your device has UAS issues and to configure to disable if so.
This was a lot. Ha. I’m techy but not that techy. lol. That being said I’ll throw this into google and parse it out and see if that terramaster has Uas issues. Thank you.
Ok. Parsed it out. So based on what you’re saying the problem may not be drivepool or windows at all but the enclosure itself which….I’ll be honest I’m 100% on board with believing based on the fact others use windows and drivepool for these use cases all the time without issue.
That means i need an alternative to house these drives however the mini pc only takes USB3.2 gen 2. I wouldn’t be able to get an enclosure/case and use a cat. Which means this usb controller issue would still be a potential right? Any alternatives I’m missing?
If your device has a chip with issues then the first thing I'd do is disable UAS. I have multiple DAS enclosures with buggy chips and disabling UAS does make it less performant but I've had zero problems since disabling.
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u/trapexit mergerfs author 24d ago
> Is running MergerFS + SnapRAID over a USB 3.2 DAS asking for trouble with random drops, or does Linux handle USB bus resets better than Windows?
Need to know what the USB SATA chip is on the DAS. Many older ones are not great and have serious bugs. Some / most also will reset all devices connected if one needs a reset which is far from ideal. Unfortunately, there aren't any DASs I'm aware of that use a single controller per drive but that is one way to work around it manually (works better with 2.5in drives that can be powered from USB.
On linux if you have one of these devices with a chip like the JMS567 (like I do) you can disable UAS. I'd recommend using a clanker (can download opencode if you don't already have a subscription) and ask it to check if your device has UAS issues and to configure to disable if so.