poeterdebier Posted January 21, 2021 Share Posted January 21, 2021 He Guys, I was hesitant about asking this question but I could not find a clear enough answer on the forum. Maybe there is somewhere. In that case I apologize, please point me in the right direction/topic. So I was wondering why a harddisk plugged in directly to a usb 3.1 port and writing a large amount of data to a nvme cache drive is only getting around 125 mb/s write speeds. Some of the answers/sugestions I read was that it was due to parity. But writing directly to the cache drive this should not matter. I am not expecting to get 2.000 mb/s write speeds! But I just don't understand the 125 mb/s limit. Is it something to do with the NVMe? external hard disk WDBWLG0020HBK-EESN 2TB platter, USB3.0 cache drive PNY XLR8 CS3030 500GB 500GB, 3d v-nand (TLC), NVMe thanks in advanced, gr Piet tower-diagnostics-20210121-0924.zip Quote Link to comment
JorgeB Posted January 21, 2021 Share Posted January 21, 2021 1 hour ago, poeterdebier said: a harddisk plugged in directly to a usb 3.1 port and writing a large amount of data to a nvme cache drive is only getting around 125 mb/s 2TB 5400rpm hard drive can't do much more than that, you can test with the diskspeed docker. Quote Link to comment
poeterdebier Posted January 21, 2021 Author Share Posted January 21, 2021 Damn, feel like a idiot. Never occurred to me to search for 5400 or 7200 rpm max read/write. Would never have guessed that the bottleneck was there. Thanks for clearing that up Jorge. Quote Link to comment
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