New answers tagged hard-drive
2
The key thing with any Pi especially the 3B+ or 4 models is to make sure you are using a proper power supply and not a generic (or even branded charger).
Power supplies (esp. the RPF/RPT ones) are designed to cope with power surges (such as hard drives spinning up), increased number of cores (e.g. start up of programs or extra processing requirements) or ...
1
If you want to use an SSD as shown in the video you won't need an extra power suppply.
However if you use an HDD you may need an extra power supply depending on what cabel you use to connect the HDD to your pi.
Some cables for HDDs especially older ones come with two USB cables one for data and one for power.
Since the Pi has 4 USB ports there should be no ...
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I got a clue to the right solution from @Andyroo's comments to the question. Andyroo suggested that I read the OMV docs and edit fstab. Unfortunately, that didn't work because my drive was being mounted via the runtime automounter, which uses mtab, not the boot automounter which uses fstab. (I think that's correct now, thanks to @Goldilocks for pointing out ...
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I've run a big number of tests today on a RaspberryPi4 2GB (with official PSU, and checked that no throttling happened; standard RaspiOS).
I used an external USB3 HDD, tested to be able to both read and write from the RPi4 faster than 70 MB/s for sequential 1 GB file, when using a normal (unencrypted) ext4 partition (just to be sure the disk itself is not ...
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I just tried a (n+1)-th USB power supply, and it finally works!
The reason was that the previous power supplies that I tried were too weak (5V, 0.5A).
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Plug the disk and run sudo dmesg: There should be lines related to the USB host driver. If there aren't any, either the USB port, or the cable or the disk is broken, to the point there is no reliable electrical connection. If there are messages, they will likely be related to a new USB device not being able to register with the bus. There could be various ...
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Before the Compute Module 4 came out, the answer was no; however, I'm currently testing an LSI SAS3082E-R SAS controller with the Compute Module 4 + IO Board, and I'm hopeful it will work. I'm planning on testing it with SATA drives, but assuming it and other SAS controllers work with the CM4 via it's PCIe bus, you could conceivably get SAS drives working ...
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